Abstract: The fueling station consists of a vacuum insulated storage vessel for storing a large quantity of LNG at low pressure. The LNG is delivered to one of two relatively small volume fuel conditioning tanks where the pressure and temperature of the LNG can be raised or lowered as dictated by the needs of the system. The pressure and temperature in the fuel conditioning tanks are raised by delivering high pressure natural gas vapor thereto from a high pressure bank. The temperature and pressure can be lowered by venting natural gas from the fuel conditioning tanks and/or delivering LNG thereto. The fuel conditioning tanks are connectable to a vehicle's fuel tank via a fill line to deliver natural gas and LNG to the vehicle and to vent natural gas from the vehicle to the fueling station.

Abstract: The fueling station of the invention consists of a vacuum insulated storage tank for storing large quantities of LNG at low pressure. A delivery line connects the LNG in the storage tank with a fill line to engage the use device such as a vehicle's fuel tank at the fueling station. A meter is provided to deliver a metered amount of LNG to the vehicle. A pump is used to sub-cool the LNG and convey it from the storage tank to the delivery hose and an eductor is provided to gradually draw vaporized LNG from the storage tank into the delivery line. The fill line, pump, eductor and delivery hose are vacuum jacketed to prevent vaporization of the LNG. A circulation loop is provided to sub-cool the pump, eductor and meter prior to delivering LNG to the vehicle in order to ensure that vaporized natural gas is not delivered to the use device. In an alternate embodiment a heat exchanger using LN.sub.2 or other coolant can be used in place of the pump to sub-cool the LNG.

Abstract: The fueling station of the invention consists of a vacuum insulated storage vessel for delivering LNG to a pressure building tank. The pressure building tank holds a quantity of LNG and a natural gas head. The pressure in the pressure building tank is lowered using liquid nitrogen (LN.sub.2) to condense the natural gas head and is raised by vaporizing the LNG. A valve system connects the supply of LNG in the pressure building tank to the vehicle being supplied to allow either LNG or natural gas to be delivered to the vehicle tank and allows natural gas in the vehicle tank to be vented back to the fueling station. The fueling station of the invention includes suitable controls for controlling the pressure of the LNG delivered to the vehicle, the pressure in the fueling station itself and the pressure in the vehicle.