low heat value การใช้

• Note that when looking up the energy density of fuels it is customary to use the " Low Heat Value " and not the " High Heat Value ", as a gasoline engine does not condense the H 2 O vapour in the exhaust . 44.4 MJ / kg is a reasonable value for gasoline LHV . Some people who have studied the " otto air cycle formula " in a physics course expect gasoline engines to have an efficiency around 50 % as predicted by the otto formula.