Low temperature capable lpg tank heater & pressure accumulator

A system for providing an LPG fuel to a fuel consuming unit, comprising:

• A first LPG fuel delivery route, the first LPG fuel delivery route providing more than about 90% of the LPG fuel consumed by a fuel consuming unit when the LPG fuel exhibits a vapor pressure of less than a first pressure, the first LPG fuel delivery route including an accumulator capable of delivering the LPG fuel at a pressure greater than the vapor pressure of the LPG fuel within the accumulator;
• and
• A second LPG fuel delivery route, the second LPG fuel delivery route providing more than about 90% of the LPG fuel consumed by the fuel consuming unit when the LPG fuel exhibits a vapor pressure of greater than a second pressure, wherein the first LPG fuel delivery route is not the same as the second LPG fuel delivery route,
• wherein the first pressure is less than the second pressure.

A system for providing LPG fuel to a fuel consuming unit, the system comprising:

• a storage tank capable of containing an LPG fuel;
• a first flow path from the storage tank to a fuel delivery point;
• a second flow path from the storage tank to the fuel delivery point, wherein the first flowpath and the second flowpath partially coincide;
• an accumulator located along the second flow path, the accumulator configured to deliver LPG fuel at a pressure above the vapor pressure of LPG fuel within the accumulator;
• a heater comprising a resistive electrical heating element, and configured to transfer heat to at least a portion of the LPG fuel, wherein the heater is located partially inside and partially outside the storage tank, and comprises a first heat exchanger located at least partially inside the storage tank and is in thermal communication with at least a portion of the LPG fuel within the storage tank, and a second heat exchanger located at least partially outside of the storage tank and is in thermal communication with the first heat exchanger, and an electrical heat source in thermal communication with the second heat exchanger;
• a controller for switching between utilizing a first energy source and a second energy force, wherein the first and second energy sources provide energy for the heat source, wherein the controller receives electrical input from the second energy source and switches between the first energy source and the second energy source based on the availability or unavailability of the second energy source;
• and
• an electricity conditioner, wherein the electricity conditioner converts electricity between AC and DC electricity.