Patent application number | Description | Published |
20090007777 | In-Line Gas Purity Monitoring and Control System - Method for supplying a high purity gas product comprising providing a first gas stream including a major component and at least one impurity component, determining the concentration of the at least one impurity component, and comparing the concentration so determined with a reference concentration for that component. When the value of the concentration so determined is less than or equal to the reference concentration, the first gas stream is utilized to provide the high purity gas product. When the value of the concentration so determined is greater than the reference concentration, a second gas stream comprising the major component is provided and the first and second gas streams are mixed to yield a mixed gas stream having a concentration of the at least one impurity component that is less than the reference concentration. The second gas stream is provided by dividing the first gas stream into a first substream and a second substream, removing at least a portion of the at least one impurity component in the first substream to provide a purified substream, and mixing the purified substream with the second substream to provide the high purity gas product. The mixed gas stream is utilized to provide the high purity gas product. | 01-08-2009 |
20090205745 | Compressor Fill Method And Apparatus - A method an apparatus for filling a vessel with compressed gas is disclosed. Gas is compressed into the vessel at a predetermined flow rate using a variable speed pump or compressor. The flow rate is adjusted to increase the gas pressure at a predetermined rate of change. The flow rate is adjusted based upon the instantaneous value of a measured parameter such as gas temperature or pressure or ambient temperature. The parameter is measured by a transducer and the value is fed back to a controller which adjusts the speed of the compressor or pump to produce the flow rate needed to achieve the predetermined pressure rate of change. | 08-20-2009 |
20090236006 | Temperature-Compensated Dispensing of Compressed Gases - Method for dispensing a gas comprising (a) providing a gas storage system containing pressurized gas and having at least first and second gas storage volumes, first and second flow control valves in flow communication with the first and second gas storage volumes, respectively, wherein each flow control valve is initially closed, and wherein the first gas storage volume has a smaller volumetric capacity than the second gas storage volume; (b) selecting a reference temperature; (c) measuring the ambient temperature; (d) providing a gas receiving vessel and placing it in flow communication with each flow control valve and with the gas storage system; and (e) initiating delivery of the gas by (i) opening the first flow control valve when the ambient temperature is equal to or greater than the reference temperature or (ii) opening the second flow control valve when the ambient temperature is less than the reference temperature. | 09-24-2009 |
20110284120 | Compressed Gas Dispensing Method - A method for dispensing a compressed gas for reducing the amount of residual gas in dispensing station storage vessels before refilling is required. The method comprises transferring compressed gas into receiving vessels in a first series of fill-ups where each of the receiving vessels receive compressed gas from a first mobile storage device and subsequently from a second mobile storage device, transporting the first mobile storage device to a refilling station after the first mobile storage device has been depleted to a selected depletion level, refilling the first mobile storage device at the refilling station, and transferring compressed gas into receiving vessels in a second series of fill-ups where each of the receiving vessels receive compressed gas from the second mobile storage device and one or more of the first mobile storage device after refilling and a third mobile storage device. | 11-24-2011 |
20120104036 | Temperature-Compensated Dispensing of Compressed Gases - Method for dispensing a gas comprising (a) providing a gas storage system containing pressurized gas and having at least first and second gas storage volumes, first and second flow control valves in flow communication with the first and second gas storage volumes, respectively, wherein each flow control valve is initially closed, and wherein the first gas storage volume has a smaller volumetric capacity than the second gas storage volume; (b) selecting a reference temperature; (c) measuring the ambient temperature; (d) providing a gas receiving vessel and placing it in flow communication with each flow control valve and with the gas storage system; and (e) initiating delivery of the gas by (i) opening the first flow control valve when the ambient temperature is equal to or greater than the reference temperature or (ii) opening the second flow control valve when the ambient temperature is less than the reference temperature. | 05-03-2012 |
20120318403 | Pressure Cycle Management In Compressed Gas Dispensing Systems - A method for dispensing compressed gas from two or more compressed gas storage volumes to receiving vessel such as vehicle fuel tanks. Control instructions are provided to cycle the compressed gas storage volumes through pressure cycles in a rolling rotating cascading manner such that each of the compressed gas storage volumes cycle from an upper pressure limit to a lower pressure limit. | 12-20-2012 |
20140007975 | Method for Dispensing a Gas - A method for dispensing gas within a target temperature range wherein the gas exchanges heat with multiple thermal capacitors to cool the gas. | 01-09-2014 |
20140261863 | Method for Dispensing Compressed Gases - Method for dispensing a compressed gas using at least three dispensing protocols, the selected dispensing protocol depending on the time-averaged dispensing rate. Compressed gas is passed from a plurality of supply vessels, for example a tube trailer, to a plurality of storage vessels, and dispensed from the plurality of storage vessels to a plurality of receiving vessels. The supply vessel providing the compressed gas depends on the compressed gas pressure in the supply vessel and the anticipated time-averaged dispensing rate for the time period. | 09-18-2014 |