Abstract: A method for supplying a vaporized gas, including: (a) providing a system having: (i) a storage tank for storing liquefied gas; (ii) a heat exchanger external to the tank, disposed in a heat-exchange relationship with a wall of the tank; (iii) a device for delivering a heat-exchange liquid from a reservoir to the heat exchanger, and (iv) a delivery line for directly transferring the vaporized gas from the heat exchanger to the consumer; (b) supplying the vaporized gas directly to the consumer, according to consumer demand; (c) upon vaporization of a portion of the liquefied gas within the storage tank, and subsequent cooling of the liquefied gas within the storage tank, transferring heat from the heat-exchange liquid to the tank via the heat exchanger, so as to increase the tank pressure.

Abstract: A method and a system for supplying pressurized gas from a liquefied-gas (LG) storage tank, the method including the steps of: (a) providing a system including: (i) a storage tank for storing liquefied gas, the tank having a lower liquid region and a vapor region thereover; (ii) a heat exchanger external to the storage tank; (iii) pumping means driven by a liquid; (iv) a line for directly transferring the vaporized gas from the heat exchanger to the consumer; (b) pumping at least a portion of the liquefied gas from the lower region to the heat exchanger using the pumping means; (c) heating the liquefied gas in the heat exchanger to produce the vaporized gas; and (d) supplying the vaporized gas directly to the consumer, according to consumer demand.

Abstract: A method of supplying vaporized gas from a storage tank storing the gas in liquified form in a lower liquid region and having a vapor region thereover, the method including employing an external source of heat to heat a heat exchange liquid to no more than about 35° C., bringing the heat exchange liquid into heat exchange relation with at least a portion of the liquified gas so as to transfer heat from the external source of heat to the liquified gas, and supplying vaporized gas to the consumer, according to the consumer demand, directly from the vapor region of the storage tank. The heat exchange relation is controlled such that the at least portion of the liquified gas which is heated remains mostly in a liquified state but that the temperature of the liquified gas is prevented from falling below a predefined minimum operational temperature.

Abstract: A method and a system for supplying pressurized gas from a liquefied-gas (LG) storage tank, the method including the steps of: (a) providing a system including: (i) a storage tank for storing liquefied gas, the tank having a lower liquid region and a vapor region thereover; (ii) a heat exchanger external to the storage tank; (iii) pumping means driven by a liquid; (iv) a line for directly transferring the vaporized gas from the heat exchanger to the consumer; (b) pumping at least a portion of the liquefied gas from the lower region to the heat exchanger using the pumping means; (c) heating the liquefied gas in the heat exchanger to produce the vaporized gas; and (d) supplying the vaporized gas directly to the consumer, according to consumer demand.