Latent Heat of Fusion 2 : The amount of heat energy, in BTU's required to change the state of one pound of a liquid to one pound of solid 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}