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HVAC - NHIE COMPLETE SOLUTIONS GRADED A+
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11/2/24, 12:45 AM HVAC - NHIE Flashcards | QuizletHVAC – NHIE COMPLETE SOLUTIONS GRADED A+
Terms in this set (40)
the inside unit of a heat pump
air handler
also sometimes used to describe a fuel-fired forced air furnace.
What are the parts of the air handler? fan, evaporator coil, associated control and operating parts
sheet metal formed into a rectangle or circle that connects an air duct to a grille or
boot
register. Also called the HVAC distribution system.
amount of heat required to increase the temperature of 1 pound of water by 1 degree
BTU (british thermal unit)
fahrenheit.
collar (duct) a round sheet metal ring that connects a duct to a plenum or to a trunk duct.
part of an a/c or heat pump condenser unit; compresses the gas refrigerant into
compressor
superheated gas, and provides energy to move the refrigerant through the system
water that condenses into liquid when heat is removed from the air flowing over the
condensate
evaporator coil. This water must be disposed of in an appropriate manner.
part of an air conditioning or heat pump condenser unit; the tubes (coils) around the
condenser coils
perimeter of the condenser unit
the outside unit of a split air conditioning or heat pump system consisting of a
condenser unit
compressor, condenser coils, a fan, and an associated control and operating parts
a plate or louvers installed in a duct system that permits control of how much air
Damper (HVAC duct)
flows in a duct.
Duct (branch) a duct that runs between a trunk duct or a plenum and one supply or return boot.
a sheet metal duct that runs in a wall cavity; terminates in a stack heat instead of a
duct (stack)
boot
duct (trunk) a large duct that serves multiple branch ducts
part of an air conditioning or heat pump system; located in the air handler or
attached to a furnace after the combustion chamber. (The evaporator coil should not
evaporator coil
be located BEFORE a furnace combustion chamber because the moist air would
damage the furnace.)
a type of cooling system that reduces air temperature by pulling air through media
evaporative cooler (swamp cooler)
soaked with water.
exhaust air removed from a specific location by mechanical means.
a cover with louvers or perforations that are not adjustable and may not be closed.
grille
usually covers a return air opening but may cover a supply air opening.
a heating and a/c system that removes heat from a house in cooling mode and move
heat pump heat from outside the house to inside the house in heating mode. Air handler +
condenser unit.
a measure of the efficiency of a heat pump in heating mode; obtained by dividing
heat seasonal performance factor (HSPF) the heating output of a system over a heating season by the electric energy used;
HSPF ratings range between 7-10.
HVAC abbreviation: heating, ventilation, and air conditioning
the amount of heat energy that an air conditioning system must remove from the air
latent load inside a home because of water vapor in the air; contributors include - people
breathing, cooking/bathing, air infiltration from outside.
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