Abstract: The present invention provides non-venting transfer systems and methods related to transferring cryogenic liquid between two vessels without venting evaporated cryogenic liquid into the atmosphere. The stations, systems, and methods utilize a feed line and a return line connecting a source tank and a pump system to allow for flow of a cryogenic liquid to the pump and return of evaporated cryogenic liquid to the source tank, thereby avoiding release of the evaporated cryogenic liquid into the atmosphere.

Abstract: The present invention provides non-venting transfer systems and methods related to transferring cryogenic liquid between two vessels without venting evaporated cryogenic liquid into the atmosphere. The stations, systems, and methods utilize a feed line and a return line connecting a source tank and a pump system to allow for flow of a cryogenic liquid to the pump and return of evaporated cryogenic liquid to the source tank, thereby avoiding release of the evaporated cryogenic liquid into the atmosphere.

Abstract: The present invention provides non-venting transfer systems and methods related to transferring cryogenic liquid between two vessels without venting evaporated cryogenic liquid into the atmosphere. The stations, systems, and methods utilize a feed line and a return line connecting a source tank and a pump system to allow for flow of a cryogenic liquid to the pump and return of evaporated cryogenic liquid to the source tank, thereby avoiding release of the evaporated cryogenic liquid into the atmosphere.

Abstract: A dispenser nitrogen purge and heater system for a liquid natural gas (LNG) fueling dispenser, comprising a nitrogen purge enclosure; a nitrogen container containing nitrogen; a nitrogen feed line for feeding nitrogen from the nitrogen container to the nitrogen purge enclosure; a heater for heating an interior space within the enclosure; and a fan assembly for circulating the nitrogen within the interior space

Abstract: A liquefied natural gas system for a natural gas vehicle engine with flow driven by the engine includes dual flow paths through at least one heat exchanger. A return path extends from the dual flow paths to the storage tank, and an engine feed path extends from the dual flow paths configured to couple to the engine. A valve and control system are coupled to the dual flow paths capable of alternating flow through the dual flow paths so that one flow path supplies the engine through the engine feed path while the other flow path pressurizes the storage tank through the return path.

Abstract: A liquefied natural gas system for a natural gas vehicle engine with flow driven by the engine includes dual flow paths through at least one heat exchanger. A return path extends from the dual flow paths to the storage tank, and an engine feed path extends from the dual flow paths configured to couple to the engine. A valve and control system are coupled to the dual flow paths capable of alternating flow through the dual flow paths so that one flow path supplies the engine through the engine feed path while the other flow path pressurizes the storage tank through the return path.