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Definitions - Central Boiler

41 February 2019 DefinitionsDEFINITIONSASTMA merican Society for Testing and Materials. Publishes standard specifications for terminology, labeling, testing and Thermal Unit (Btu)The British thermal unit is a unit of measure equal to the amount of heat necessary to raise the temperature of one pound of water one degree process of heat transfer whereby heat moves through a material or between two materials that are in direct contact with each transfer of heat by movement of a liquid or a gas. Natural Convection is a result of movement caused by changes in density as temperature changes within a fluid medium such as a liquid or a gas.

Conduction A process of heat transfer whereby heat moves through a material or between two materials that are in direct contact with each other. Convection The transfer of heat by movement of a liquid or a gas. Natural Convection is a result of movement caused by changes in density as temperature changes within a fluid medium such as a liquid ...

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