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Apparatus for dispensing compressed natural gas and liquified natural gas to natural gas powered vehicles

United States Patent

7,222,647
May 29, 2007
View the Complete Patent at the US Patent & Trademark Office
L/CNG - Refueling Systems
A fueling facility and method for dispensing liquid natural gas (LNG), compressed natural gas (CNG) or both on-demand. The fueling facility may include a source of LNG, such as cryogenic storage vessel. A low volume high pressure pump is coupled to the source of LNG to produce a stream of pressurized LNG. The stream of pressurized LNG may be selectively directed through an LNG flow path or to a CNG flow path which includes a vaporizer configured to produce CNG from the pressurized LNG. A portion of the CNG may be drawn from the CNG flow path and introduced into the CNG flow path to control the temperature of LNG flowing therethrough. Similarly, a portion of the LNG may be drawn from the LNG flow path and introduced into the CNG flow path to control the temperature of CNG flowing therethrough.
Bingham; Dennis A. (Idaho Falls, ID), Clark; Michael L. (Menan, ID), Wilding; Bruce M. (Idaho Falls, ID), Palmer; Gary L. (Shelley, ID)
Battelle Energy Alliance, LLC (Idaho Falls, ID)
11/ 050,032
20060169352
February 2, 2005