| Entries |
| Document | Title | Date |
|---|
| 20080289336 | Apparatus and Method for Converting Heat Energy to Mechanical Energy - The invention relates to a method for converting heat energy to mechanical energy by expanding an evaporated working fluid with an expansion device ( | 11-27-2008 |
| 20080307789 | Integration of Lng Regasification with Refinery and Power Generation - Contemplated plants thermally integrate operation of a refinery component, and most preferably of a hydrocarbon splitter with LNG regasification to provide refrigeration duty and with a power cycle to provide the reboiler duty of the component. It should be noted that such configurations advantageously allow operation of the splitter at a reduced temperature and at reduced pressure, thereby increasing separation efficiency, while the power output is boosted using air intake chilling. Most notably, such process advantages are achieved by satisfying the heating duty of LNG regasification. | 12-18-2008 |
| 20090038310 | Method for preventing chlorine deposition on the heat-transferring surfaces of a boiler - The invention relates to a method for preventing chlorine deposition on the heat-transferring surfaces of a boiler, particularly on the superheater, in which boiler a fuel with a chlorine content, such as a biomass or waste fuel, is burned. And to which steam boiler is fed, preferably in the superheater area, a compound with a sulphate content, which forms a particular reagent to fix alkali compounds. The said compound is ferric(III)sulphate, Fe | 02-12-2009 |
| 20090205337 | Method and installation for converting thermal energy from fluids into mechanical energy - A method and a system for converting heat energy contained in fluids as noticeable or latent heat to mechanical energy, wherein a working fluid is evaporated by means of the heat energy, if necessary after transformation to a higher temperature level, by means of one or more series-connected heat pumps and expanded in an expansion device, and wherein the heat energy is at least partially converted to mechanical energy. The expansion occurs in a low-pressure expansion device and the energy contained in the expanded evaporated working fluid is recyclable into the evaporating device in an evaporating unit, which is usable for evaporating additional working fluid. | 08-20-2009 |
| 20090266075 | PROCESS AND DEVICE FOR USING OF LOW TEMPERATURE HEAT FOR THE PRODUCTION OF ELECTRICAL ENERGY - The invention relates to the using of low temperature heat for the production of electrical energy by using of supercritical carbon dioxide as working fluid. | 10-29-2009 |
| 20090320476 | CRYOGENIC ENGINES - Slush gas, i.e. a gas or a mixture of gases cooled so that it is partially solid and partially liquid is employed as a drive fluid in a cryogenic engine. A cryogenic engine has a working chamber ( | 12-31-2009 |
| 20090320477 | Supplementary Thermal Energy Transfer in Thermal Energy Recovery Systems - A system for controlled recovery of thermal energy and conversion to mechanical energy. The system collects thermal energy from a reciprocating engine (for example, from engine jacket fluid) and may also collect further thermal energy from a natural gas compressor (for example, from compressor lubricating fluid). The collected thermal energy is used to generate secondary power by evaporating an organic propellant and using the gaseous propellant to drive an expander in production of mechanical energy. Secondary power is used to power parasitic loads, improving energy efficiency of the system. A supplementary cooler may provide additional cooling capacity without compromising system energy efficiency. | 12-31-2009 |
| 20100005801 | AMBIENT TEMPERATURE THERMAL ENERGY AND CONSTANT PRESSURE CRYOGENIC ENGINE - Ambient temperature thermal energy cryogenic engine with constant pressure with continuous “cold” combustion at constant pressure and with an active chamber operating with a cryogenic fluid stored in its liquid phase, and used as a work gas in its gaseous phase and operating in a closed cycle with return to its liquid phase. The initially liquid cryogenic fluid is vaporized in the gaseous phase at very low temperatures and supplies the inlet of a gas compression device, which then discharges this compressed work gas, still at low temperature, and through a heat exchanger with the ambient temperature, into a work tank or external expansion chamber fitted or not fitted with a heating device, where its temperature and its volume will considerably increase in order to then be preferably let into a relief device providing work and for example comprising an active chamber according to international patent application WO 2005/049968. | 01-14-2010 |
| 20100058762 | METHOD FOR PRODUCTION OF MIXED VAPOUR - Method for production of mixed vapours at low temperatures. The thermal energy stored in the mixed vapours is intended to be converted to mechanical energy in a thermal power machine, in order to operate an electrical generator. | 03-11-2010 |
| 20100071368 | Multi-level organic rankine cycle power system - A waste heat recovery system includes a high pressure turbine and a low pressure turbine, in which the high pressure turbine receives high pressure working fluid vapor, the low pressure turbine receives low pressure working fluid vapor and the high pressure turbine also supplies low pressure working fluid vapor to the low pressure turbine. A recuperator receives working fluid vapor from the low pressure turbine. The recuperator produces heated condensate, at least a portion of which is provided to a high pressure vaporizer. The high pressure vaporizer is configured to receive from a high temperature heat source and produces high pressure working vapor used to power the high pressure turbine. The remaining condensed fluid is provided to a low pressure vaporizer which is configured to receive heat from a low-temperature heat source, thereby producing low pressure working fluid vapor used to power the low pressure turbine. | 03-25-2010 |
| 20100077753 | LIQUID NITROGEN ENGINE - An engine is described that derives its propulsive energy from the flash expansion of liquid nitrogen from a liquid form to a gaseous form. The gaseous nitrogen is forced to escape from the rear of a casing of the engine, thereby providing a propulsive force to the casing. The escaping gaseous nitrogen, mixed with air, is harnessed to rotate a first fan that in turn rotates a second fan that draws air into the front of the engine. The warmer air flowing through the engine is utilized to regulate the temperature of the engine, and to facilitate the evaporation of the nitrogen propellant, thereby creating a steady state condition that may last as long as the supply of liquid nitrogen. | 04-01-2010 |
| 20100107634 | Rankine Cycle For LNG Vaporization/Power Generation Process - A method and system for generating power in a vaporization of liquid natural gas process, the method comprising pressurizing a working fluid; heating and vaporizing the working fluid; expanding the working fluid in one or more expanders for the generation of power, the working fluid comprises: 2-11 mol % nitrogen, methane, a third component whose boiling point is greater than or equal to that of propane, and a fourth component comprising ethane or ethylene; cooling the working fluid such that the working fluid is at least substantially condensed; and recycling the working fluid, wherein the cooling of the working fluid occurs through indirect heat exchange with a pressurized liquefied natural gas stream in a heat exchanger, and wherein the flow rate of the working fluid at an inlet of the heat exchanger is equal to the flow rate of the working fluid at an outlet of the heat exchanger. | 05-06-2010 |
| 20100122534 | TWO-PHASE EXPANSION SYSTEM AND METHOD FOR ENERGY RECOVERY - A closed loop expansion system for energy recovery includes a heat exchanger for using heat from a heat source to heat a working fluid of the closed loop expansion system to a temperature below the vaporization point of the working fluid; a radial inflow expander for receiving the working fluid from the heat exchanger and for expanding and partially vaporizing the working fluid; a screw expander for receiving the working fluid from the radial inflow turbine and for further expanding and vaporizing the working fluid; and a condenser for receiving the working fluid from the screw expander and for liquefying the working fluid. | 05-20-2010 |
| 20100126172 | POWER GENERATOR USING AN ORGANIC RANKINE CYCLE DRIVE WITH REFRIGERANT MIXTURES AND LOW WASTE HEAT EXHAUST AS A HEAT SOURCE - A Rankine cycle system uses as a refrigerant one of several quaternary organic heat exchange fluid mixtures which provide substantially improved efficiency and are environmentally sound, typically containing no chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs). The system includes a closed circuit in which the refrigerant is used to drive a turbine, which may be used to drive an electric generator or for other suitable purposes. | 05-27-2010 |
| 20100139273 | WORKING FLUID FOR A STEAM CYCLE PROCESS AND METHOD FOR THE OPERATION THEREOF - The invention relates to a working fluid for a steam circuit process carried out in a device comprising a steam generator, an expander, a condenser, and a reservoir for the working fluid, comprising a working medium that evaporates by the addition of heat in a steam generator, performs mechanical work by expanding in the expander during the steam phase, and condenses in the condenser; an ionic fluid serving as an antifreeze component and having a melting point in the reservoir below the freezing point of the working medium, wherein the decomposition temperature of the ionic fluid is above the evaporating temperature of the working medium in the steam generator. | 06-10-2010 |
| 20100139274 | Chloro- And Bromo-Fluoro Olefin Compounds Useful As Organic Rankine Cycle Working Fluids - Aspects of the present invention are directed to working fluids and their use in processes wherein the working fluids comprise compounds having the structure of formula (I): | 06-10-2010 |
| 20100146971 | LNG Regasification And Power Generation - LNG is regasified with concurrent power production in systems and methods where the refrigeration content of the LNG condenses a low pressure working fluid vapor and in which the combined refrigeration content of the warmed LNG and low pressure working fluid condensate condenses an intermediate pressure working fluid vapor. | 06-17-2010 |
| 20100263379 | HYDROGEN FUELED EXTERNAL COMBUSTION ENGINE AND METHOD OF CONVERTING INTERNAL COMBUSTION ENGINE THERETO - A hydrogen fuel zero or low emissions external combustion engine and a method to convert an internal combustion engine thereto. The invention includes devices, modifications, alterations, kits and methods for converting an internal combustion (IC) engine or engine design to the external combustion engine while using many of the components of the internal combustion engine. The external combustion engine includes a hydrogen tank to supply hydrogen fuel, a hydrogen flash vaporizer (HFV) to combust the hydrogen fuel and vaporize an atomized liquid introduced into the hydrogen flash vaporizer into an expanding fluid vapor (EFV), and an engine to receive the expanding fluid vapor and convert an expansion force thereof into mechanical force with a superior level of efficiency derived from a unique heat scavenging and cylinder shrouding design. | 10-21-2010 |
| 20100263380 | CASCADED ORGANIC RANKINE CYCLE (ORC) SYSTEM USING WASTE HEAT FROM A RECIPROCATING ENGINE - A method and system for operating a cascaded organic Rankine cycle (ORC) system ( | 10-21-2010 |
| 20110048012 | ENERGY RECOVERY SYSTEM AND METHOD USING AN ORGANIC RANKINE CYCLE WITH CONDENSER PRESSURE REGULATION - An energy recovery system and method using an organic rankine cycle is provided for recovering waste heat from an internal combustion engine, which effectively controls condenser pressure to prevent unwanted cavitation within the fluid circulation pump. A coolant system may be provided with a bypass conduit around the condenser and a bypass valve selectively and variably controlling the flow of coolant to the condenser and the bypass. A subcooler may be provided integral with the receiver for immersion in the accumulated fluid or downstream of the receiver to effectively subcool the fluid near the inlet to the fluid pump. | 03-03-2011 |
| 20110061386 | HEAT PIPES FOR TRANSFERRING HEAT TO AN ORGANIC RANKINE CYCLE EVAPORATOR - A first portion of each of a plurality of Qu-type heat pipes is disposed in a hot gas path, and a second portion of each of the plurality of Qu-type heat pipes disposed away from the hot gas path. Also, the first portion of each of the plurality of Qu-type heat pipes extracts heat from the hot gas path and wherein the second portion of each of the plurality of Qu-type heat pipes creates a vapor that exits each second portion of the plurality of Qu-type heat pipes and away from the hot gas path. | 03-17-2011 |
| 20110061387 | THERMAL ENERGY CONVERSION METHOD - A waste heat recovery system, method and device executes a thermodynamic cycle using a working fluid in a working fluid circuit which has a high pressure side and a low pressure side. Components of the system in the working fluid circuit include a waste heat exchanger in thermal communication with a waste heat source also connected to the working fluid circuit, whereby thermal energy is transferred from the waste heat source to the working fluid in the working fluid circuit, an expander located between the high pressure side and the low pressure side of the working fluid circuit, the expander operative to convert a pressure/enthalpy drop in the working fluid to mechanical energy, a recuperator in the working fluid circuit operative to transfer thermal energy between the high pressure side and the low pressure side of the working fluid circuit, a cooler in thermal communication with the low pressure side of the working fluid circuit operative to control temperature of the working fluid in the low side of the working fluid circuit, a pump in the working fluid circuit and connected to the low pressure side and to the high pressure side of the working fluid circuit and operative to move the working fluid through the working fluid circuit, and a mass management system connected to the working fluid circuit, the mass management system, method and device having a working fluid vessel connected to the low pressure side of the working fluid circuit and configured to passively control an amount of working fluid mass in the working fluid circuit. | 03-17-2011 |
| 20110067400 | DIRECT CONTACT HEAT EXCHANGER AND METHODS FOR MAKING AND USING SAME - A system and method are disclosed for the combined production of power and heat from an external heat source stream, where the system utilizes four basic stream of different compositions to co-generate power and to heat an external heat absorber stream from an external heat source stream. | 03-24-2011 |
| 20110072819 | HEAT RECOVERY SYSTEM BASED ON THE USE OF A STABILIZED ORGANIC RANKINE FLUID, AND RELATED PROCESSES AND DEVICES - A heat recovery system is disclosed, and includes a thermally-stable, organic working fluid which is based on a mixture of thiophene or a derivative thereof, and at least one hydrocarbon having a boiling point in the range of about 25° C. to about 125° C. A method for recovering waste-heat from a power plant is also described, and includes the step of directing the waste-heat to the heat-recovery system as described herein. A photometric sensor system for the detection of oxidative activity in an industrial process is disclosed, and includes the working fluid described above, and a detector for detecting a color change in the fluid, which signifies oxidative activity. | 03-31-2011 |
| 20110100009 | Heat Exchanger for Direct Evaporation in Organic Rankine Cycle Systems and Method - Systems and methods include heat exchangers using Organic Rankine Cycle (ORC) fluids in power generation systems. The system includes a heat exchanger configured to be mounted inside an exhaust stack that guides hot flue gases and having an inlet and an outlet, the heat exchanger being configured to receive a liquid stream of a first fluid through the inlet and to generate a vapor stream of the first fluid and the heat exchanger is configured to include a double walled pipe, where the first fluid is disposed within an inner wall of the double walled pipe and a second fluid is disposed between the inner wall and an outer wall of the double walled pipe. | 05-05-2011 |
| 20110113780 | COMPOUND CLOSED-LOOP HEAT CYCLE SYSTEM FOR RECOVERING WASTE HEAT AND METHOD THEREOF - A waste heat recovery system includes a Brayton cycle system having an heater configured to circulate carbon dioxide vapor in heat exchange relationship with a hot fluid to heat carbon dioxide vapor. A Rankine cycle system is coupled to the Brayton cycle system and configured to circulate a working fluid in heat exchange relationship with the carbon dioxide vapor to heat the working fluid. | 05-19-2011 |
| 20110120129 | DIRECT EVAPORATOR APPARATUS AND ENERGY RECOVERY SYSTEM - In one aspect, the present invention provides a direct evaporator apparatus for use in an organic Rankine cycle energy recovery system, comprising: (a) a housing comprising a heat source gas inlet, and a heat source gas outlet, the housing defining a heat source gas flow path from the inlet to the outlet; and (b) a heat exchange tube disposed within the heat source flow path, the heat exchange tube being configured to accommodate an organic Rankine cycle working fluid, the heat exchange tube comprising a working fluid inlet and a working fluid outlet. The direct evaporator apparatus is configured such that at least a portion of a heat source gas having contacted at least a portion of the heat exchange tube is in thermal contact with heat source gas entering the direct evaporator apparatus via the heat source gas inlet. An organic Rankine cycle energy recovery system and a method of energy recovery are also provided. | 05-26-2011 |
| 20110146277 | FLUID FEEDBACK PUMP TO IMPROVE COLD START PERFORMANCE OF ORGANIC RANKINE CYCLE PLANTS - A system and method improves cold start performance of an organic Rankine cycle (ORC) plant. The system includes one or more pumps configured to pump condensed fluid from points of natural accumulation of the condensed fluid within an ORC loop back into a corresponding low pressure liquid storage vessel shortly after shutting down the ORC plant to ensure the start-up routine works properly for the next ORC plant start event. One or more of the pumps can also be configured to pump fluid away from the ORC expansion machine(s) at any time prior to starting the ORC if the fluid is in a liquid phase. | 06-23-2011 |
| 20110154822 | MICRO-SCALE ENGINES, COMPONENTS, AND METHODS FOR GENERATING POWER - Heat engines suitable for large-scale or micro-scale fabrication supply power from a power turbine. The power turbine is driven in part by an ejector in which a working fluid is utilized as a motive flow. Fuel utilized for combustion may also be utilized as a phase-changing working fluid and as the motive flow driving the ejector. Heat exchangers particularly suitable for micro-scale implementation are also disclosed. | 06-30-2011 |
| 20110162366 | Working Fluid For An ORC Process, ORC Process and ORC Apparatus - Use of working fluids for energy conversion in a thermal Organic Rankine Cycle (ORC) process for combined generation of electrical and heat energy. The heat source used in the ORC process is in particular thermal water. The working fluids used in the ORC process are partially or perfluorinated hydrocarbons and/or partially or perfluorinated polyethers and/or partially or perfluorinated ketones. In some embodiments, the working fluid used is a combination of 1,1,1,3,3-pentafluorobutane and a fluorinated polyether having a molecular weight of 340 and a boiling point of 57° C. at 101.3 kPa, or a combination of 1,1,1,3,3-pentafluorobutane and at least one partially or perfluorinated ketone. | 07-07-2011 |
| 20110167824 | Configurations And Methods For Waste Heat Recovery And Ambient Air Vaporizers In LNG Regasification - Contemplated power plants and LNG regasification facilities employ a combination of ambient air and non-ambient air as continuous heat sources to regasify LNG and to optimize power production. Most preferably, contemplated plants and methods are operable without the need for supplemental heat sources under varying temperature conditions. | 07-14-2011 |
| 20110173981 | UTILIZATION OF LOW GRADE HEAT IN A REFRIGERATION CYCLE - A system for reducing the power required to cool a combustion gas for cleaning and a method for performing the same are disclosed. The system includes an expander for producing power. Energy in the form of heat is transferred from the combustion gas to a working fluid. The working fluid drives the expander to generate at least a portion of the power required for performing to drive a compressor in a refrigeration system. After the combustion gas transfers energy the combustion gas is cooled with the refrigeration system. In some embodiments the expander and the compressor are arranged along a common shaft. | 07-21-2011 |
| 20110185733 | SYSTEM AND METHOD FOR EQUILIBRATING AN ORGANIC RANKINE CYCLE - Embodiments of an ORC system can be configured to reduce ingress of contaminants from the ambient environment. In one embodiment, the ORC system can comprise a pressure equilibrating unit that comprises a variable volume device for holding a working fluid. The variable volume device can be fluidly coupled to a condenser so that working fluid can move amongst the condenser and the variable volume device. This movement can occur in response to changes in the pressure of the working fluid in the ORC system, and in one example the working fluid is allowed to move when the pressure deviates from atmospheric pressure. | 08-04-2011 |
| 20110185734 | SYSTEM AND METHOD FOR EQUILIBRATING AN ORGANIC RANKINE CYCLE - Embodiments of an ORC system can be configured to reduce ingress of contaminants from the ambient environment. In one embodiment, the ORC system can comprise a pressure equilibrating unit that comprises a variable volume device for holding a working fluid. The variable volume device can be fluidly coupled to a condenser so that working fluid can move amongst the condenser and the variable volume device. This movement can occur in response to changes in the pressure of the working fluid in the ORC system, and in one example the working fluid is allowed to move when the pressure deviates from atmospheric pressure. | 08-04-2011 |
| 20110259010 | ORGANIC MOTIVE FLUID BASED WASTE HEAT RECOVERY SYSTEM - The present invention provides a waste heat recovery system, comprising a closed fluid circuit through which an organic motive fluid flows, heat exchanger means for transferring heat from waste heat gases to the motive fluid, means for flashing the motive fluid which exits the heat exchanger means into a high pressure flashed vapor portion, means for flashing liquid non-flashed motive fluid producing a low pressure flashed vapor portion, a high pressure turbine module which receives said high pressure flashed vapor portion to produce power, and a low pressure turbine module which receives a combined flow of motive fluid vapor comprising the low pressure flashed vapor portion and discharge vapor from the high pressure turbine module whereby additional power is produced. | 10-27-2011 |
| 20110265476 | OPERATIONAL FLUID FOR A VAPOUR CIRCUIT PROCESSING DEVICE AND A METHOD FOR OPERATING SAME - The invention relates to an operating fluid for a steam cycle process apparatus comprising a steam generator, an expander, a condenser and a reservoir for the operating fluid, comprising a working medium that evaporates by supplying heat in the steam generator, performs mechanical work in the vapour phase by expanding in the expander and condenses in the condenser and an ionic liquid which forms a mixture with the working medium, wherein the melting point of the mixture lies below −5° C. | 11-03-2011 |
| 20110271676 | HEAT ENGINE WITH CASCADED CYCLES - A method of converting thermal energy into another energy form using a thermodynamic cycle is disclosed, the method including the steps of: pressurizing a working fluid; supplying thermal energy to heat the working fluid from a liquid or substantially liquid state to a supercritical fluid state; in a first expander, substantially isentropically expanding the working fluid to yield energy in the other energy form; separating the expanded working fluid to form a first portion of the fluid diverted to a second expander and a second portion of the working fluid diverted to bypass the second expander; in the second expander, substantially isentropically expanding the first portion of the working fluid to yield energy in the other energy form; condensing the expanded first portion of the working fluid to a liquid or substantially liquid state; and recombining the first and second portions of the working fluid to be recirculated in the cycle. | 11-10-2011 |
| 20110283702 | GENERATING ENERGY FROM FLUID EXPANSION - A turbine wheel is rotatable in response to expansion of a working fluid flowing from near an inlet side towards an outlet side of the turbine wheel. The turbine wheel may receive the working fluid radially into the inlet side of the turbine wheel and output the working fluid axially from its outlet side. A generator has a stator and a rotor. The rotor may be coupled to the turbine wheel and may rotate at the same speed as the turbine wheel when the turbine wheel rotates. In certain instances, the generator is adjacent the inlet side of the turbine wheel. | 11-24-2011 |
| 20110289922 | GENERATING ENERGY FROM FLUID EXPANSION - An apparatus includes an electric generator having a stator and a rotor. A first turbine wheel is coupled to a first end of the rotor to rotate at the same speed as the rotor. A second turbine wheel is coupled to a second end of the rotor opposite the first end, and configured to rotate at the same speed as the rotor. The first and second turbine wheels may rotate in response to expansion of a working fluid flowing from an inlet side to an outlet side of the turbine wheels. | 12-01-2011 |
| 20110314816 | NONFRACTIONALIZED BIOMASS-FUELED REFRIGERANT-BASED COGENERATION - A system and method for cogeneration of electricity and useful heat utilizing non-fractionalized biomass as a fuel whose combustion in thermal proximity to a heat transfer medium, preferably water, is used to drive an organic Rankine Cycle which generates mechanical power for driving an electrical generator, and from which useful heat is captured and may be used for any of a myriad of purposes. | 12-29-2011 |
| 20120006024 | Multi-component two-phase power cycle - A multi-component apparatus characterized as performing a two-phase thermodynamic cycle, for conversion of heat energy to useful power comprises: fluid means consisting to two or more chemical components to absorb heat energy, the fluid means providing an increasing temperature and increasing fraction of gas phase as increasing amounts of heat are absorbed, expander means operating to convert the enthalpy in a received mixture of gas and liquid, formed in said fluid means, as a result of the said heat energy absorbed by the fluid means, to mechanical, shaft power, heat exchanger means operating to transfer the heat energy to be absorbed by the fluid means, condenser means operating to reject the unconverted enthalpy, by the expander means, in the fluid means, thereby condensing any gas to convert the fluid means to liquid, and pump means operating to pressurize liquid fluid means leaving the condenser means, in order to return the fluid means to the heat exchanger means, closing the thermodynamic cycle. | 01-12-2012 |
| 20120031096 | Low Grade Heat Recovery from Process Streams for Power Generation - Methods are described for generating electrical power from low grade heat sources from refining and petrochemical processes, including overhead vapors from vapor-liquid contacting apparatuses such as distillation columns, absorbers, strippers, quenching towers, scrubbers, etc. In many cases, these overhead vapors exit the apparatuses at a temperature from about 90° C. (194° F.) to about 175° C. (347° F.). Rather than rejecting the low temperature heat contained in these vapors to cooling air and/or cooling water, the vapors may instead be used to evaporate an organic working fluid. The vapors of the working fluid may then be sent to a turbine to drive a generator or other load. | 02-09-2012 |
| 20120067047 | SYSTEM AND METHOD FOR STORING ENERGY AND PURIFYING FLUID - Embodiments of a system for storing and providing electrical energy are disclosed. Also disclosed are embodiments of a system for purifying fluid, as well as embodiments of a system in which energy storage and fluid purification are combined. One disclosed embodiment of the system comprises a latent heat storage device, a sensible heat storage device, a vapor expander/compressor device mechanically coupled to a motor/generator device, a heat-exchanger, and a liquid pressurization and depressurization device. The devices are fluidly coupled in a closed-loop system, and a two-phase working fluid circulates therein. Embodiments of a method for operating the system to store and generate energy also are disclosed. Embodiments of a method for operating the system to purify fluid, as well as embodiments of a method for operating a combined energy storage and fluid purification system are disclosed. | 03-22-2012 |
| 20120085096 | CAPACITY AND PERFORMANCE OF PROCESS COLUMNS BY OVERHEAD HEAT RECOVERY INTO AN ORGANIC RANKINE CYCLE FOR POWER GENERATION - Heat recovery systems and methods for producing electrical and/or mechanical power from heat by-product of an overhead stream from a process column are provided. Heat recovery systems and methods include a process heat by-product stream for directly or indirectly heating a working fluid of an organic Rankine cycle. The organic Rankine cycle includes a heat exchanger, a turbine-generator system for producing electrical or mechanical power, a condenser heat exchanger, and a pump for recirculating the working fluid to the heat exchanger. | 04-12-2012 |
| 20120090324 | Air vaporizor - A process for the use of ambient air as a heat exchange medium for vaporizing cryogenic fluids wherein the vaporized cryogenic gases are heated to a selected temperature for use or delivery to a pipeline. | 04-19-2012 |
| 20120151923 | Waste Heat Recovery in a Chemical Process and Plant, Particularly for the Synthesis of Ammonia - A method for recovering waste heat in a process for the synthesis of a chemical product, particularly ammonia, where the product is used as the working fluid of a thermodynamic cycle; the waste heat is used to increase the enthalpy content of a high-pressure liquid stream of said product ( | 06-21-2012 |
| 20120227404 | Thermodynamic Machine and Method for the Operation Thereof - The invention relates to a thermodynamic machine having a circulation system in which a working fluid, in particular a low-boiling working fluid, circulates alternately in a gaseous and a liquid phase, a heat exchanger, an expansion machine, a condenser, and a fluid pump. The invention also relates to a method for operating the thermodynamic machine. According to certain embodiments of the invention, in the flow line of the fluid pump, a partial pressure increasing the system pressure is applied to the liquid working fluid by adding a non-condensing auxiliary gas. Compact ORC machines can be implemented, preventing cavitation in the liquid working fluid. | 09-13-2012 |
| 20120255302 | HEATING, COOLING AND POWER GENERATION SYSTEM - A thermal separator/power generator uses the thermodynamic properties of refrigerant substances to provide supplemental heating, cooling, and power without emitting any additional greenhouse gases to the environment by utilizing waste or unused heat energy. This is accomplished through the combined operation of a Rankine Cycle Generator using a refrigerant, preferably a natural refrigerant such as NH3, as the working fluid, and a CO2 a vapor compression heat pump cycle, also called a Thermal Separator Module. The combined system is called a Thermal Separator/Power Generator. It produces electrical power and simultaneously produces secondary heating and water or air cooling as byproducts. In the combined vapor compression heat pump/Rankine power generator cycle, waste heat from external source(s) are recovered and used for heating in the Rankine power cycle. The CO2 heat pump provides cooling and optional space or process heating in lieu of heat boost efficiency for the Rankine power generator cycle. | 10-11-2012 |
| 20120317983 | SYSTEMS AND METHODS EXTRACTING USEABLE ENERGY FROM LOW TEMPERATURE SOURCES - Simple thermodynamic cycles, methods and apparatus for implementing the cycles are disclosed, where the method and system involve once or twice enriching an upcoming basic solution stream, where the systems and methods utilize relatively low temperature external heat source streams, especially low temperature geothermal sources. | 12-20-2012 |
| 20130000302 | Thermodynamic Cycle - A method of improving heat utilization in a thermodynamic cycle, the method comprising heating a working stream in a at least one distillation assembly to produce a rich stream and a lean stream; wherein the distillation assembly comprises a bottom reboiler section, a middle distillation section and a top condenser section; superheating the rich stream in at least one superheater to produce a gaseous working stream; expanding the gaseous working stream in at least one means for expansion to obtain energy in usable form and at least one spent stream; mixing the spent stream and the lean stream to produce a mixed stream; condensing the mixed stream in an absorber-condenser assembly using cooling water to obtain a condensed stream; exchanging heat between the condensed stream and the rich stream to partially condense the rich stream before step b); whereby the condensed stream on heat exchange gives a liquid working stream; exchanging heat between the liquid working stream and the lean stream in at least one heat exchanger before step d) to produce the working stream; and, recycling the working stream to the distillation section of the distillation assembly. | 01-03-2013 |
| 20130036737 | POWER GENERATION FROM LOW-TEMPERATURE HEAT - The invention relates to a method for converting heat energy into mechanical energy by means of a Rankine cycle. In the Rankine cycle the circulating working fluid is pumped to a pressure above its critical pressure prior to heat exchange with an external medium. During the heat exchange with the external medium, the working fluid is heated to a temperature above its critical temperature and sufficiently high for the working fluid to expand without partial condensation. The working fluid is then expanded and condensed. The maximum pressure of the working fluid is controlled by means of an expander controllable with regard to the mass flow rate of the working fluid and/or a pump controllable with regard to the mass flow rate of the working fluid. | 02-14-2013 |
| 20130091843 | FLUORO OLEFIN COMPOUNDS USEFUL AS ORGANIC RANKINE CYCLE WORKING FLUIDS - Aspects of the present invention are directed to working fluids and their use in processes wherein the working fluids comprise compounds having the structure of formula (I): | 04-18-2013 |
| 20130104548 | USE OF COMPOSITIONS COMPRISING 1,1,1,2,3-PENTAFLUOROPROPANE AND OPTIONALLY Z-1,1,1,4,4,4-HEXAFLUORO-2-BUTENE IN POWER CYCLES | 05-02-2013 |
| 20130118169 | SYSTEM AND PROCESS FOR GENERATION OF ELECTRICAL POWER - A system and process for generation of electrical power is provided. Electrical power is generated by a system including two integrated power cycles, a first power cycle utilizing water/steam as a working fluid and the second power cycle utilizing a fluid selected from the group consisting of molecular nitrogen, argon, a chemical compound having a boiling point of at most 65° C. at 0.101 MPa and a latent heat of vaporization of at least 350 kJ/kg, and a chemical compound having a boiling point of at most 65° C. at 0.101 MPa and a specific heat capacity as a liquid of at least 1.9 kJ/kg-° K as a working fluid. The working fluid of the second power cycle is expanded through a two-phase expander to produce power in the second power cycle, where the expanded working fluid of the second cycle has a vapor quality of at most 0.5. | 05-16-2013 |
| 20130133327 | SYSTEM AND PROCESS FOR GENERATION OF ELECTRICAL POWER - A system and process for generation of electrical power is provided. Electrical power is generated by a system including two integrated power cycles, a first power cycle utilizing water/steam as a working fluid and the second power cycle utilizing a fluid selected from the group consisting of molecular nitrogen, argon, a chemical compound having a boiling point of at most 65° C. at 0.101 MPa and a latent heat of vaporization of at least 350 kJ/kg, and a chemical compound having a boiling point of at most 65° C. at 0.101 MPa and a specific heat capacity as a liquid of at least 1.9 kJ/kg-° K as a working fluid. The working fluid of the second power cycle is expanded through a two-phase expander to produce power in the second power cycle, where the expanded working fluid of the second cycle has a temperature of at most 10° C. | 05-30-2013 |
| 20130133328 | The Timlin Cycle - A Binary Condensing Thermal Power Cycle - One embodiment of an improved thermal power cycle comprising a wet binary motive fluid, pump ( | 05-30-2013 |
| 20130160448 | ORC PLANT WITH A SYSTEM FOR IMPROVING THE HEAT EXCHANGE BETWEEN THE SOURCE OF HOT FLUID AND THE WORKING FLUID - The invention concerns an ORC plant (Organic Rankine Cycle) for a conversion of thermal energy into electric energy, that comprises a heat exchange group for the exchange of heat between the thermal carrier fluid and a working fluid destined to feed at least one expander connected to an electric generator. The heat exchanger group comprises in succession at least one primary heater and a primary evaporator respectively for preheating and evaporation of the working fluid. According to the invention, on the side of the heat Exchange group, downstream of the primary heater, are present at least an auxiliary evaporator to evaporate a part of the working fluid by means of a heat exchanger with the fluid source coming from the output of said primary evaporator, a device for diverting said part of the working fluid flow from the outlet of said primary preheater towards the auxiliary evaporator, and a compressor designed to receive the working fluid from the auxiliary evaporator and to increase the pressure up to a level corresponding to a preset pressure level for the induction of the work fluid into the expander. | 06-27-2013 |
| 20130199185 | Improved Heat Utilization In ORC Systems - Apparatus, systems and methods are provided for the improved use of waste heat recovery systems which utilize the organic Rankine cycle (ORC) to generate mechanical and/or electric power from waste heat of large industrial machines (prime movers) generating power from biofuel such as biogas produced during the anaerobic digestion process. Waste heat energy obtained from prime mover(s) is provided to one or more ORC system(s) which are operatively coupled to separate electrical generator(s). The ORC system includes a heat coupling subsystem which provides the requisite condensation of ORC working fluid by transferring heat from ORC working fluid to another process or system, such as anaerobic digester tank(s), to provide heat energy that enhances the production of fuel for the prime mover(s) without requiring the consumption of additional energy for that purpose. | 08-08-2013 |
| 20130213041 | APPARATUS AND METHOD FOR INCREASING POWER PLANT EFFICIENCY AT PARTIAL LOADS - In a method for increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid during periods of variable heat input or at partial loads is adjusted while substantially maintaining the inlet temperature and a power plant thermal efficiency. A Rankine Cycle power plant includes a conduit circuit extending from a heat source to each of a vaporizer section and a superheater section for regulating flow therethrough of source heat fluid. | 08-22-2013 |
| 20130227947 | APPARATUS AND METHOD FOR INCREASING POWER PLANT EFFICIENCY AT PARTIAL LOADS - For increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid is adjusted during periods of variable heat input or at partial loads while virtually maintaining the inlet temperature and power plant thermal efficiency. | 09-05-2013 |
| 20130227948 | METHOD AND SYSTEM FOR CONVERTING THERMAL POWER, DELIVERED FROM A VARIABLE TEMPERATURE HEAT SOURCE, INTO MECHANICAL POWER - The present invention concerns a method and a system for converting thermal power delivered from a variable temperature heat source into mechanical power by means of a closed thermodynamic cycle. The cycle is characterized in that it operates between a higher temperature (Thigh) and a temperature substantially equal to ambient temperature (Tamb), wherein said higher temperature (Thigh) is much higher than ambient temperature (Tamb), said closed thermodynamic cycle comprising an adiabatic compression process for changing the temperature of a two-phase mixture from said ambient temperature (Tamb) to a lower temperature (Tlow) and to change the specific entropy value of one phase of said two-phase mixture from a first specific entropy value (si, s3) to a second specific entropy value (s2), said second specific entropy value (s2) being lower than said first specific entropy value (s1, s3) and said ambient temperature value (Tamb) being lower than the value of said lower temperature (Tlow). | 09-05-2013 |
| 20130239574 | METHOD FOR CONVERTING ENERGY, INCREASING ENTHALPY AND RAISING THE COEFFICIENT OF COMPRESSIBILITY - The invention relates to a method for converting thermal energy into mechanical work, which comprises imparting thermal energy to a working fluid in a tank. The working fluid in the vapor phase is fed into a device for converting energy into mechanical work. The vaporous working fluid is condensed and cyclically returned in the liquid phase to the tank. A catalytic additive in the form of a catalytic substance or a catalytic mixture of substances in an amount of 0.0000001 to 0.1 wt. % is introduced into the working fluid before or after starting the heating. The additive is a solid, its solution or suspension, or a liquid or its emulsion. The catalytic substance and the ratio of components of the mixture are chosen to prevent or promote decomposition of the substance or the mixture under the effect of high temperature and pressure according to current needs. The method enhances the efficiency of the process and expands its operational capabilities. | 09-19-2013 |
| 20130305721 | SYSTEMS AND METHODS FOR LOW TEMPERATURE HEAT SOURCES WITH RELATIVELY HIGH TEMPERATURE COOLING MEDIA - Methods and systems for implementing a thermodynamic cycle using heat source streams having initial temperatures between about 200° F. and about 500° F. and coolant stream having relatively high temperatures greater than or equal to about 80° F., where the methods and systems have overall energy extraction efficiencies that are at least 40% higher than a corresponding Rankine cycle. | 11-21-2013 |
| 20130312415 | METHOD FOR CONVERTING OF WARMTH ENVIRONMENT INTO MECHANICAL ENERGY AND ELECTRICITY - The compressor of high pressure ( | 11-28-2013 |
| 20130318969 | HEAT RECOVERY USING ORGANIC RANKINE CYCLE - A system includes a heat exchanger and an organic Rankine cycle system. The heat exchanger is configured to exchange heat between extraction air from a power block and nitrogen from an air separation unit. The organic Rankine cycle system is coupled to the heat exchanger. In addition, the organic Rankine cycle system is configured to convert heat from the extraction air into work. | 12-05-2013 |
| 20130318970 | METHOD AND CONFIGURATION FOR THE RECOVERY OF THERMAL ENERGY IN THE HEAT TREATMENT OF COLD-ROLLED STEEL STRIP IN A HOOD-TYPE ANNEALING FURNACE - A method and a configuration recover thermal energy in a thermal treatment of cold-rolled steel strip in an annealing furnace. The steel strip is heated up in a protective gas atmosphere to a temperature above the recrystallization temperature, and is subjected in a first, slow cooling phase and a second, fast cooling phase to a protective gas. The temperature of the protective gas is reduced during the first phase down to an intermediate temperature and in the second phase from the intermediate temperature to a final temperature. A first heat exchanger transfers the thermal energy of the protective gas by an oil circuit and a second heat exchanger to a working medium, and which evaporates and is fed to a steam motor, which converts the thermal energy contained in the working medium into energy. | 12-05-2013 |
| 20130340434 | HYBRID THERMAL CYCLE WITH INDEPENDENT REFRIGERATION LOOP - Work is produced from heat in a continuous cycle. A flow of first working fluid is provided to a high pressure boiler to produce a flow of first working fluid vapor. A second working fluid in vaporous form is compressed, after which a third working fluid is formed by mixing the first working fluid vapor and the second working fluid. Thermal energy is transferred directly between the first and second working fluids in the mixing chamber exclusive of any intervening structure. A refrigeration loop containing a fourth working fluid extracts thermal energy from a low grade thermal energy source and moves the thermal energy to the first working fluid and/or the second working fluid. | 12-26-2013 |
| 20140007577 | Method and System for the Utilization of an Energy Source of Relatively Low Temperature - A method of extracting energy from an external heat source. The method comprises the steps of: a) compressing a medium in the liquid phase using an external power source to obtain a compressed liquid medium; b) heating the compressed liquid medium from step a) using heat at least partly derived from the external heat source to expand the medium and obtain it in the supercritical state; c) reducing the pressure of the heated medium from step b) to a controlled degree by applying a variable load to generate electric power of a frequency; d) converting the frequency of step c) to a desired output frequency; and e) reducing the temperature and volume of the medium from step c) to obtain the medium in the liquid phase for recycling to step a), wherein the degree of compression in step a) is controlled independently of the load applied in step c). A corresponding system is also provided. | 01-09-2014 |
| 20140013747 | Power Compounder - An apparatus and method is disclosed wherein mechanical power is returned to a prime mover producing waste heat. The apparatus includes a working fluid configured to receive thermal energy from the waste heat, a collector to hold the working fluid, an evaporator fluidly coupled to the working fluid collector for transferring the waste heat to the working fluid to change the working fluid to vaporized working fluid, a feed pump to cause the working fluid to flow between the working fluid collector and the evaporator, an expander fluidly coupled to the evaporator to receive the heated working fluid to create rotational mechanical power, and a condenser to cool the expanded working fluid. The expander is mechanically associated with the prime mover directly or via a clutch. | 01-16-2014 |
| 20140026574 | MULTIPLE ORGANIC RANKINE CYCLE SYSTEM AND METHOD - Apparatus, systems and methods are provided for the use of multiple organic Rankine cycle (ORC) systems that generate mechanical and/or electric power from multiple co-located waste heat flows using a specially configured system of multiple expanders operating at multiple temperatures and/or multiple pressures (“MP”) utilizing a common working fluid. The multiple ORC cycle system accepts waste heat energy at different temperatures and utilizes a single closed-loop cycle of organic refrigerant flowing through all expanders in the system, where the distribution of heat energy to each of the expanders allocated to permit utilization of up to all available heat energy, In some embodiments, the multiple ORC system maximizes the output of the waste energy recovery process. The expanders can be operatively coupled to one or more generators that convert the mechanical energy of the expansion process into electrical energy. | 01-30-2014 |
| 20140026575 | APPARATUS AND PROCESS FOR GENERATION OF ENERGY BY ORGANIC RANKINE CYCLE - An apparatus ( | 01-30-2014 |
| 20140053557 | MAXIMIZING VALUE FROM A CONCENTRATING SOLAR ENERGY SYSTEM - Systems, methods, and apparatus by which solar energy may be collected to provide electricity, heat, and/or cold are disclosed herein. | 02-27-2014 |
| 20140060050 | ORGANIC RANKINE CYCLE FOR CONCENTRATED SOLAR POWER SYSTEM - Systems and methods for transforming solar energy into mechanical and/or electrical energy by using an ORC fluid in an ORC cycle configuration. The ORC cycle configuration includes a heat source that vaporizes the ORC fluid and an expander that expands the vaporized ORC fluid to produce the energy. | 03-06-2014 |
| 20140069098 | POWER-GENERATING DEVICE AND POWER-GENERATING METHOD USING ORGANIC RANKINE CYCLE - A power-generating device using an organic Rankine cycle uses heat recovered from an exhaust gas treated in an exhaust gas treatment device, the power-generating device including a heat exchanger, an evaporator, a steam turbine, a power generator, a condenser, and a medium pump. | 03-13-2014 |
| 20140075943 | METHOD FOR OPERATING FUEL SUPPLY SYSTEM FOR MARINE STRUCTURE HAVING RELIQUEFACTION APPARATUS AND HIGH-PRESSURE NATURAL GAS INJECTION ENGINE - Provided is a method for operating a fuel supply system for a marine structure. The fuel supply system includes a BOG compression unit configured to receive and compress BOG generated in a storage tank, a reliquefaction apparatus configured to receive and liquefy the BOG compressed by the BOG compression unit, a high-pressure pump configured to compress the liquefied BOG generated by the reliquefaction apparatus, and a high-pressure gasifier configured to gasify the liquefied BOG compressed by the high-pressure pump. The fuel supply system includes a recondenser installed at an upstream side of the high-pressure pump, and the recondenser recondenses a portion or all of the generated BOG by using liquefied gas supplied from the storage tank. During a ballast voyage process, all of the BOG is supplied to and recondensed by the recondenser, and an operation of the reliquefaction apparatus is interrupted. | 03-20-2014 |
| 20140075944 | METHOD TO MAXIMIZE ENERGY RECOVERY IN WASTE-TO-ENERGY PROCESS - In a fossil fuel waste incineration or plasma gasification process, waste heat generated by combustion of waste is captured by a heat transfer fluid and conveyed to an Organic Rankine Cycle (ORC) for energy recovery. In the case of a fossil fuel-fired waste incineration system, the heat transfer fluid captures waste heat from a double-walled combustion chamber, a heat exchanger being used to cool the hot process exhaust (gas cooler). In the case of a plasma waste gasification system, the heat transfer fluid captures waste heat from a plasma torch, a gasification chamber and combustion chamber cooling jackets as well as any other high-temperature components requiring cooling, and then a heat exchanger used to cool the hot process exhaust (gas cooler). The heat exchanger may take on several configurations, including plate or shell and tube configurations. | 03-20-2014 |
| 20140096524 | Heat Engine and Heat to Electricity Systems and Methods with Working Fluid Mass Management Control - Aspects of the disclosure generally provide a heat engine system and a method for regulating a pressure and an amount of a working fluid in a working fluid circuit during a thermodynamic cycle. A mass management system may be employed to regulate the working fluid circulating throughout the working fluid circuit. The mass management systems may have a mass control tank fluidly coupled to the working fluid circuit at one or more strategically-located tie-in points. A heat exchanger coil may be used in conjunction with the mass control tank to regulate the temperature of the fluid within the mass control tank, and thereby determine whether working fluid is either extracted from or injected into the working fluid circuit. Regulating the pressure and amount of working fluid in the working fluid circuit selectively increases or decreases the suction pressure of the pump to increase system efficiency. | 04-10-2014 |
| 20140109576 | APPARATUS AND PROCESS FOR GENERATION OF ENERGY BY ORGANIC RANKINE CYCLE - An apparatus for generation of energy through organic Rankine cycle comprises a heat exchanger ( | 04-24-2014 |
| 20140174083 | CRYOGENIC FUEL SYSTEM WITH AUXILIARY POWER PROVIDED BY BOIL-OFF GAS - A system in one embodiment includes a detection unit, a boil-off auxiliary power unit, and a controller. The detection unit is configured to detect a characteristic of a boil-off gas stream from a cryotank configured to hold a cryogenic fluid. The boil-off auxiliary power unit is configured to receive the boil-off gas stream and use the boil-off gas stream to provide auxiliary power to a vehicle system. The controller is configured to acquire information from the detection unit corresponding to the characteristic; determine, using the information acquired from the detection unit, an available boil-off auxiliary energy that is available from the boil-off auxiliary power unit; determine a mode of operation of the vehicle system; determine a required auxiliary energy for the vehicle system; and to operate the auxiliary power unit based on the available boil-off auxiliary energy, the mode of operation, and the required auxiliary energy. | 06-26-2014 |
| 20140174084 | PROCESSES AND COMPOSITIONS FOR ORGANIC RANKINE CYCLES FOR GENERATING MECHANICAL ENERGY FROM HEAT - Disclosed are compositions of novel working fluids uniquely designed for higher cycle efficiencies leading to higher overall system efficiencies. In particular, these working fluids are useful in Organic Rankine Cycle systems for efficiently converting heat from any heat source into mechanical energy. The present invention also relates to novel processes for recovering heat from a heat source using ORC systems with a novel working fluid comprising at least about 20 weight percent cis-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz-Z), trans-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz-E), or mixtures thereof. | 06-26-2014 |
| 20140260252 | STABILIZED HFO AND HCFO COMPOSITIONS FOR USE IN HIGH TEMPERATURE HEAT TRANSFER APPLICATIONS - The present invention relates, in part, to HFO and/or HCFO based working compositions exhibiting chemical and thermal stability in high temperature heat transfer systems. In certain aspects, the HFO and/or HCFO compounds may be represented by formula I | 09-18-2014 |
| 20140305125 | WORKING FLUID FOR RANKINE CYCLE - An organic Rankine cycle working fluid comprising at least one compound having formula (I): RNQ, wherein R is fluorinated or non-fluorinated methyl, ethyl, vinyl or ethynyl, N is element nitrogen, the connection of R—N is a ring structure or a straight chain structure, and Q is a hydrogen and/or at least one fluorine atom. A process for converting thermal energy into mechanical energy, a method for power generation, an organic Rankine cycle system, and the use of the working fluid for heat transfer or in a mechanical power generation device are also provided. The organic Rankine cycle working fluid has a high energy conversion efficiency, low flammability, low toxicity and low corrosion on copper. | 10-16-2014 |
| 20140311146 | FLUORINATED OXIRANES AS ORGANIC RANKINE CYCLE WORKING FLUIDS AND METHODS OF USING SAME - A process and an apparatus for converting thermal energy into mechanical energy in a Rankine cycle is provided. The process and apparatus include a working fluid that comprises a fluorinated oxirane. The fluorinated oxirane can contain substantially no hydrogen atoms bonded to carbon atoms and can have from about 4 to about 9 carbon atoms. The process can drive a turbine and, in some embodiments, generate electricity. | 10-23-2014 |
| 20140331672 | WASTE HEAT RECOVERY IN A CHEMICAL PROCESS AND PLANT, PARTICULARLY FOR THE SYNTHESIS OF AMMONIA - A method for recovering waste heat in a process for the synthesis of a chemical product, particularly ammonia, where the product is used as the working fluid of a thermodynamic cycle; the waste heat is used to increase the enthalpy content of a high-pressure liquid stream of said product ( | 11-13-2014 |
| 20140366540 | CHLORO- AND BROMO-FLUORO OLEFIN COMPOUNDS USEFUL AS ORGANIC RANKINE CYCLE WORKING FLUIDS - Aspects of the present invention are directed to working fluids and their use in processes wherein the working fluids comprise compounds having the structure of formula (I): | 12-18-2014 |
| 20140373542 | ORGANIC RANKINE CYCLE SYSTEM - The application discloses an organic Rankine Cycle system with a generating unit, a condenser for condensing an organic work fluid, a feeder pump for circulating the organic work fluid and an evaporator ( | 12-25-2014 |
| 20150089949 | CLOSED LOOP SUPERCRITICAL CARBON DIOXIDE POWER CYCLE - One embodiment of a closed loop supercritical carbon dioxide power generation process is provided. This process includes Indirectly exchanging heat between a hot gas stream and a warm supercritical carbon dioxide stream, expanding the heated supercritical carbon dioxide stream in a turbine, indirectly exchanging heat from the expanded supercritical carbon dioxide stream in a high temperature recuperator, thereby a cooled, expanded supercritical carbon dioxide steam, splitting the cooled, expanded supercritical carbon dioxide stream into a first stream and a second stream, compressing the first stream in a main compressor, and introducing the compressed first stream into the low temperature recuperator, and compressing the second stream in a recompressor, combining the compressed second stream with the heated first stream, and introducing the combined stream into the high temperature recuperator, wherein it indirectly exchanges heat with expanded supercritical carbon dioxide stream, thereby producing the warm supercritical carbon dioxide stream. | 04-02-2015 |
| 20150101330 | HEAT TRANSFER ENGINE - The invention provides a method for a thermally activated closed loop heat transfer system, and requires no other external power source other than the heat which it is transferring. The system is based on a two-phase (liquid/vapor) working fluid, with heat input through an evaporator and heat rejected through a condenser. All of the mechanical power produced by an engine, driven by the high vapor quality fluid leaving the evaporator, is consumed by the pump. The pump drives the low vapor quality fluid leaving the condenser back to the evaporator. Nearly isothermal heat transport can be achieved when using a pure or azeotropic working fluid, since the operation only requires the evaporator pressure to be marginally higher than the condensers pressure. | 04-16-2015 |
| 20150121873 | COMPOSITIONS COMPRISING E-1,2-DIFLUOROETHYLENE AND USES THEREOF - The present invention relates to compositions for use in refrigeration, air-conditioning, and heat pump systems wherein the composition comprises E-1,2-difluoroethylene. The compositions of the present invention are useful in processes for producing cooling or heat, as heat transfer fluids, foam blowing agents, aerosol propellants, and power cycle working fluids. | 05-07-2015 |
| 20160010512 | MASS MANAGEMENT SYSTEM FOR A SUPERCRITICAL WORKING FLUID CIRCUIT | 01-14-2016 |
| 20160024974 | PASSIVE LOW TEMPERATURE HEAT SOURCES ORGANIC WORKING FLUID POWER GENERATION METHOD - The present invention relates to a passive type low-temperature heat sources organic working fluid power generation method. The organic working fluid absorbs heat and evaporates in the first evaporator and the second in turn evaporator. When the pressure of organic working fluid reaches the set pressure, the self-operated pressure regulator valve at the outlet of the evaporator opens triggered by operating pressure. The organic working fluid vapor flows into the turbine and pushes the turbine to rotate with a high speed, driving the generator to provide output power. The low-temperature low-pressure exhaust gas flows into the condenser and condenses into liquid working fluid. Through the first and second evaporator in turn providing working steam, the turbine can maintain continuous work and provide output power. Compared with the prior technology, the present invention has reliable performance, relying on the evaporation of the working fluid in a closed space to achieve increased pressure. | 01-28-2016 |
| 20160040559 | Cogeneration with nucleate boiling cooled internal combustion engine - A cogeneration system for generating electricity and process steam. The system includes an internal combustion engine having a shaft and a cooling system comprising a cooling fluid adapted to circulate through the engine and to cool the engine under conditions of nucleate boiling in which at least 10 percent of the coolant exits the engine in a vapor phase. It includes a vapor separator adapted to separate the coolant that exits the engine into a vapor phase coolant and a liquid phase coolant. The engine shaft drives an electric generator to provide electric power. A hot vapor line directs hot vapor exiting the vapor separator to a hot vapor process load. A coolant circulation pump is provided to force the cooling fluid through the engine, and a hot water line is provided to return hot water exiting the vapor separator to the coolant circulation pump. In preferred embodiments the system further includes an excess steam condenser for to collecting and condensing excess steam not needed by the hot vapor load, a condensate return tank adapted to store condensate from the hot vapor load and the excess steam condenser, and a condensate return line adapted to return condensate to the coolant recirculation pump. | 02-11-2016 |
| 20160047540 | Method and Apparatus For Evaporating Organic Working Media - The present invention provides a device which comprises: a heat exchanger ( | 02-18-2016 |
| 20160069220 | Heat Utilization in ORC Systems - Apparatus, systems and methods are provided for the improved use of waste heat recovery systems which utilize the organic Rankine cycle (ORC) to generate mechanical and/or electric power from heat sources generating power from byproducts of water purification process(es). Waste heat energy obtained from heat source(s) is provided to one or more ORC system(s) which may be operatively coupled to electric generator(s). A heat coupling subsystem provides the requisite condensation of ORC working fluid by transferring heat from ORC working fluid to one or more other process(es) or system(s), such as anaerobic digester tank(s), to provide heat energy that enhances the production of fuel for the prime mover(s) without requiring the consumption of additional energy for that purpose. | 03-10-2016 |
| 20160084115 | HEAT ENERGY DISTRIBUTION SYSTEMS AND METHODS FOR POWER RECOVERY - Systems and methods are provided for the recovery of mechanical power from heat energy sources via multiple heat exchangers and expanders receiving at least a portion of heat energy from a source. The distribution of heat energy from the source may be portioned, distributed, and communicated to the input of each of the heat exchangers so as to permit utilization of up to all available heat energy. In some embodiments, the system receives heat energy from more than one source at one or more temperatures. Mechanical energy from expansion of working fluid in the expanders may be communicated to other devices to perform useful work or operatively coupled to one or more generators to convert the mechanical energy into electrical energy. | 03-24-2016 |
| 20160108762 | FALLING FILM EVAPORATOR FOR POWER GENERATION SYSTEMS | 04-21-2016 |
| 20160115827 | HEAT TRANSFER PROCESS - The use of a refrigerant in organic Rankine cycle systems including at least one hydrofluoroolefin, having at least four carbon atoms represented by the formula (I) R1CH═CHR2 in which R1 and R2 independently represent alkyl groups having from 1 to 6 carbon atoms, substituted with at least one fluorine atom, optionally with at least one chlorine atom. | 04-28-2016 |
| 20160130984 | APPARATUS, SYSTEMS, AND METHODS FOR LOW GRADE WASTE HEAT MANAGEMENT - The present invention relates to apparatus, systems, and methods of managing large quantities of low-grade waste heat energy by generating excess electrical power via an ORC process driven by the removal and recovery of waste heat under favorable operating conditions, and utilizing the same apparatus to provide waste heat removal via a refrigeration process that consumes electrical power when environmental conditions do not permit operation in the ORC mode. The mode of operation of the system is principally determined by the thermal energy of the waste heat stream and the availability, or lack thereof, of adequate cooling resources. Such resources are often subject to local environmental conditions, particularly ambient temperature which varies on a diurnal and annual basis. | 05-12-2016 |
| 20160143190 | FUEL VAPORIZATION USING DATA CENTER WASTE HEAT - Systems and methods are provided for data center cooling by vaporizing fuel using data center waste heat. The systems include, for instance, an electricity-generating assembly, a liquid fuel storage, and a heat transfer system. The electricity-generating assembly generates electricity from a fuel vapor for supply to the data center. The liquid fuel storage is coupled to supply the fuel vapor, and the heat transfer system is associated with the data center and the liquid fuel storage. In an operational mode, the heat transfer system transfers the data center waste heat to the liquid fuel storage to facilitate vaporization of liquid fuel to produce the fuel vapor for supply to the electricity-generating assembly. The system may be implemented with the liquid fuel storage and heat transfer system being the primary fuel vapor source, or a back-up fuel vapor source. | 05-19-2016 |
| 20160146061 | ELECTROTHERMAL ENERGY STORAGE SYSTEM AND AN ASSOCIATED METHOD THEREOF - An electrothermal energy storage and discharge system is provided including a charging cycle and a discharging cycle. The charging cycle includes a refrigeration unit and a thermal unit, and the discharging cycle includes a power unit. The refrigeration unit is driven by an excess electric power and is configured to generate a cold energy storage having a solid carbon dioxide. The thermal unit is driven by a thermal energy and is configured to generate a hot energy storage and/or provide a hot source. The power unit operates between the cold energy storage and at least one of the hot energy storage and hot source so as to retrieve the energy by producing a high pressure carbon dioxide and a hot supercritical carbon dioxide, and generating an electric energy using the hot supercritical carbon dioxide. | 05-26-2016 |
| 20160156083 | SYSTEM FOR GENERATING POWER FROM FUEL CELL WASTE HEAT | 06-02-2016 |
| 20160160694 | PROCESS AND COMBINED PLANT FOR STORAGE AND RECOVERY OF ENERGY - The present invention relates to a process and plant for storage and recovery of energy using a combined plant that comprises a gas treatment unit and an energy generation unit, wherein in a first operating mode, a low-temperature gas liquefaction product is generated from compressed feed gas that is cooled in a heat-exchange system, and using the gas liquefaction product, a storage liquid is provided, and in a second operating mode, using the stored liquid, a low-temperature process liquid is provided that is warmed in the heat-exchange system, obtaining a pressurized fluid that is work-producingly expanded in the energy generation unit. | 06-09-2016 |
| 20160194983 | MULTI-PRESSURE ORGANIC RANKINE CYCLE | 07-07-2016 |
