Glossary
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The terms and definitions included
in this glossary were taken from "ASHRAE Terminology of Heating, Ventilation,
Air Conditioning & Refrigeration".
To access the complete glossary please
visit ASHRAE's Bookstore.
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| heat exchanger (heat interchanger) | device to transfer heat between two physically
separated fluids. See also heat exchanger system; superheater |
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| heat exchanger casing | structure which encloses the heat exchanger and
forms a passage around it for the fluid being heated |
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| heat exchanger face area | in a heat exchanger, with a bundle of tubes, the
section that is effectively traversed by the external fluid just before it
passes through the tube bundle. The area measured is the lesser area of the two
heat exchanger surfaces. |
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| heat exchanger heating surface | area intended for transferring heat |
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| heat exchanger removable head (removable |
in shell-and-tube heat exchangers, a head which
can be unbolted for cleaning or maintenance.
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| heat exchanger system |
assembly (factory- or field-assembled) of
components necessary to comprise a complete heat exchanger system
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| heat flow |
passage of heat from one point to another or one
space to another by one or more of the three modes, conduction, convection, and
radiation. See also thermal transmittance.
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| heat flow meter | apparatus designed to measure the heat flow from
or into a surface. |
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| heat flow path | in a variable temperature field, the lines of
heat flow |
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| heat flow rate | quantity of thermal energy flowing in unit time |
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