Method and apparatus for fueling vehicles with liquefied cryogenic fuel

A method comprising:

• withdrawing liquefied cryogenic fuel stored in a primary insulated storage tank at a relatively low pressure temperature;
• increasing the pressure of the withdrawn liquefied cryogenic fuel and the feeding the pressurized liquefied cryogenic fuel through a heat exchanger to warm the liquefied cryogenic fuel to near saturated liquid condition;
• feeding the warmed and pressurized liquefied cryogenic fuel from the heat exchanger to a stationary insulated cryogenic fuel dispensing tank located at a vehicle liquefied fueling facility and storing the liquefied cryogenic fuel in the dispensing tank in a approximate saturated condition;
• and
• upon arrival of a vehicle at the refueling facility, said vehicle using liquefied cryogenic fuel as its fuel and being equipped with an insulated vehicle tank adapted to safely contain and store liquefied cryogenic fuel in liquid form, transferring liquefied cryogenic fuel from the dispensing tank to the vehicle fuel tank so that the liquefied cryogenic fuel is in an approximate saturated condition.

Apparatus comprising:

• a primary insulated storage tank containing liquefied cryogenic fuel at a relatively low pressure and temperature;
• a heat exchanger;
• a first conduit communicating with the liquefied cryogenic fuel in the primary tank and with the heat exchanger, said conduit including a pump, for withdrawing liquefied cryogenic fuel from the primary tank, increasing the pressure of the withdrawn liquefied cryogenic fuel and feeding it to the heat exchanger wherein the pressurized liquefied cryogenic fuel is warmed to a subcooled or near saturated liquid condition;
• and
• a second conduit communicating with the heat exchanger and having means for communicating with a vehicle fuel tank, the second conduit for receiving the warmed and pressurized liquefied cryogenic fuel from the heat exchanger and feeding it to a vehicle fuel tank for storage as a liquid therein.

Apparatus comprising:

• a primary insulated storage tank containing liquefied cryogenic fuel at a relatively low pressure and temperature;
• a heat exchanger;
• a first conduit communicating with the liquefied cryogenic fuel in the primary tank and with the heat exchanger, said conduit including a pump, for withdrawing liquefied cryogenic fuel from the primary tank, increasing the pressure of the withdrawn liquefied cryogenic fuel and feeding it to the heat exchanger wherein the pressurized liquefied cryogenic fuel is warmed to a subcooled or near saturated liquid condition;
• a stationary insulated cryogenic fuel dispensing tank located at a vehicle liquefied cryogenic fuel refueling facility;
• and
• a second conduit for feeding the warmed and pressurized liquefied cryogenic fuel from the heat exchanger to the stationary insulated cryogenic fuel dispensing tank for storage in the said dispensing tank at an approximate saturated condition.