Patent application number | Description | Published |
20100034684 | METHOD FOR LUBRICATING SCREW EXPANDERS AND SYSTEM FOR CONTROLLING LUBRICATION - A method for lubricating a screw expander includes condensing a mixture of working fluid and lubricant fed from the screw expander, through a condenser. At least a portion of the mixture of working fluid and lubricant fed from the condenser is pressurized from a first pressure to a second pressure through a pump. The method also includes separating the lubricant from the condensed working fluid of the at least portion of the mixture via a separator and feeding the lubricant to the screw expander; or separating the lubricant from the working fluid of the at least portion of the mixture via an evaporator and feeding the lubricant to the screw expander; or feeding the at least portion of the mixture of condensed working fluid and lubricant to the screw expander; or combinations thereof. | 02-11-2010 |
20100107592 | SYSTEM AND METHOD FOR REDUCING CORROSION IN A GAS TURBINE SYSTEM - A system includes a gas turbine unit configured to generate a combustion gas by combusting a mixture of compressed air and fuel and generate electric power by expanding the combustion gas. A separator is coupled to the gas turbine unit and disposed upstream of the gas turbine unit. The separator is configured to reduce sulfur content in the fuel before being fed to the gas turbine unit. A portion of an exhaust gas from a gas turbine is recirculated to the gas turbine unit. | 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 |
20100146974 | SYSTEM FOR RECOVERING WASTE HEAT - A waste heat recovery system includes a heat generation system including at least two separate heat sources having different temperatures. A rankine cycle system is coupled to the at least two separate heat sources and configured to circulate a working fluid. The rankine cycle system is coupled to at least one heat source and another heat source among the at least two separate heat sources. The rankine cycle system is configured to remove heat from the at least one heat source to partially vaporize or preheat the working fluid; and remove heat from the other heat source to vaporize or superheat the working fluid. | 06-17-2010 |
20100326076 | OPTIMIZED SYSTEM FOR RECOVERING WASTE HEAT - A waste heat recovery system includes at least two integrated rankine cycle systems coupled to at least two separate heat sources having different temperatures. The first rankine cycle system is coupled to a first heat source and configured to circulate a first working fluid. The second rankine cycle system is coupled to at least one second heat source and configured to circulate a second working fluid. The first and second working fluid are circulatable in heat exchange relationship through a cascading heat exchange unit for condensation of the first working fluid in the first rankine cycle system and evaporation of the second working fluid in the second rankine cycle system. At least one bypass unit is configured to divert at least a portion of the first working fluid to bypass the first evaporator, the first expander, the cascaded heat exchange unit, or combinations thereof; at least a portion of the second working fluid to bypass the second expander, the cascaded heat exchange unit, or combinations thereof. | 12-30-2010 |
20110083437 | RANKINE CYCLE SYSTEM - The rankine cycle system includes an evaporator coupled to a heat source and configured to circulate a working fluid in heat exchange relationship with a hot fluid from the heat source so as to heat the working fluid and vaporize the working fluid. An expander is coupled to the evaporator and configured to expand the vaporized working fluid from the evaporator. The exemplary expander is operable at variable speed. A condenser is coupled to the expander and configured to condense the vaporized working fluid from the expander. A pump is coupled to the condenser and configured to feed the condensed working fluid from the condenser to the evaporator. | 04-14-2011 |