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.