BTU per pound Propane vs ULSD
Having a devil of a time with web connection. For friends in the mountains. RV patio heater. Thank You My interest is I visit them :)
Forum Discussion
MEXICOWANDERER wrote:
Since LPG has a weight per cubic foot density similar to diesel it would make sense that BTU specs would be the same. However substituting LPG as a motor fuel reveals a drastic sum difference in economy. This is curious.
Simple science actually, propane makes the same(ish) heat as diesel but it doesn't explode as fast as vapourized diesel, especially under pressure, so it takes a lot more propane to accomplish the same work.
Thus when burning it slowly (compared to an ICE) you get similar heat, because the losses are mostly eliminated.
