Latent Heat of Melting 2 : The amount of heat energy, in BTU'S, that must be removed to change the state of one pound of solid to one pound of vapor at the same temperature
EESiFlo North America, Terminology and Glossary: HVAC Terms, Pennsylvania, USA 2002. flowmeterdirectory.com/flowmeter_terminology, (Heat, Vent and Air Cond - Amer) {553}