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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| boiler |
vessel in which a liquid is heated with or
without vaporization; boiling need not occur. |
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| boiler capacity | design maximum rate of heat output |
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| boiler crown sheet | part of a boiler forming the top of the furnace
in a firebox boiler, or the equivalent surface in other types |
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| boiler feedwater |
water supplied to a boiler by pumping. |
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| boiler feedwater heater | apparatus for raising the temperature of the
boiler feedwater, usually with exhaust steam. |
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| boiler foaming | carryover of slugs of water into the piping from
overloading of the boiler. Compare boiler priming. |
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| boiler generator | part of an absorption machine in which the
refrigerant vapor is driven off by heat |
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| boiler heating surface | surfaces of the boiler which are exposed to the
products of combustion on one side and water on the other, expressed in area
units (of the side receiving the heat). |
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| boiler horsepower | equivalent evaporation of 34.5 lb. of water per
hour from and at 212°F.
This is equal to heat output of 970.3 ´
34.5 = 33,475 Btu/h, approximately 9809.5 W. |
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| boiler‑burner unit | boiler designed especially for gas and oil and
sold integrally with the burner |
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