Energy Density and Other Physical Properties
The heating value depends on the source of gas that is used and the process that is used to liquefy the gas. The higher heating value of LNG is estimated to be 24 MJ/L. The lower heating value of LNG is 21 MJ/L or 563623 BTU/ft3. For the purpose of comparison of different fuels the heating value is also known as the energy density expressed in MJ/L or the gasoline gallon equivalent expressed in BTU/ft3. The energy density of LNG is 2.4 times greater than that of CNG which makes it economical to transport natural gas by ship in the form of LNG. The energy density of LNG is comparable to propane and ethanol but is only 60% that of diesel and 70% that of gasoline.
The density of LNG is roughly 0.41 kg/L to 0.5 kg/L, depending on temperature, pressure, and composition, compared to water at 1.0 kg/L.
One million BTU is 32.76kg.
Read more about this topic: Liquefied Natural Gas
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