LNG: Is 300 Pounds of LNG = 55,500 BTU's?

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The discussion revolves around the energy content of liquefied natural gas (LNG), specifically questioning the claim that 300 pounds of LNG equals 55,500 BTUs. The original poster challenges an engineer's assertion of 185 BTUs per pound, expressing confusion over how a cryogenic liquid at -200°F could yield that energy value. They reference their own research indicating that one gallon of LNG can produce approximately 75,000 BTUs when burned. The poster seeks clarification on the term "standard empathy," suspecting it may be a miscommunication for "enthalpy." The conversation highlights the need for accurate understanding of LNG's energy content and the terminology used in the field.
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Hello I'm new to the forum. I was wondering if some people can help me in trying to get some answers.

I am involved in alternative fuels and it has come up where an engineer is telling me that there is 185btus/lb inside of a 100 gallon vehiculer tank. He is using a bueauro of standard empathy chart or something to get that number.

This confuses me because i don't understand how a cryogenic liquid that is about -200 F has that much btu's. in total, at a density of 3.0. There is 300 pounds of LNG and this =
55,500 btu's. Is this correct? From my research one gallon of LNG has the btu potential if burned of about 75,000 btu's.

I really think this engineer i am working with is blowing smoke up my butt, wondering if some people can shed some light on this.
 
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What is "standard empathy" supposed to be. Do you mean enthalpy? Have you never heard of enthalpy?
 
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