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52 TRG-TRC005-EN
Glossary
face-split A type of finned-tube evaporator arrangement that splits the coil
into parallel air paths.
fill The heat transfer surface inside a cooling tower.
finned-tube evaporator A type of evaporator where refrigerant flows through
the tubes and air blows across the tubes and fins.
flash The process of liquid refrigerant being vaporized by a sudden reduction
of pressure.
hot gas muffler A device installed at the discharge of the compressor to
reduce noise and vibration associated with reciprocating compressors.
intertwined A type of finned-tube evaporator arrangement that splits the coil
by alternating the tubes fed in each row between two distributors.
liquid-line filter drier A device installed in the liquid line to
remove moisture
(water) and foreign matter, introduced during the installation process, from the
refrigeration system.
moisture-indicating sight glass See sight glass, moisture indicating.
orifice plate A type of expansion device that uses a fixed plate with holes
drilled in it to reduce the pressure and temperature of the refrigerant.
pressure–enthalpy chart A graphical representation of the saturated
properties of a refrigerant, plotting refrigerant pressure versus enthalpy.
pump-down cycle A control sequence used in a refrigeration system to pump
the refrigerant from the low-pressure side of the system to the high-pressure
side of the system.
refrigeration effect The amount of heat that each pound [kg] of liquid
refrigerant will absorb when it evaporates.
row-split A type of finned-tube evaporator arrangement that splits the coil by
placing the independently-controlled coil sections in series in the airstream.
shell-and-tube evaporator A type of evaporator where refrigerant flows
through the tubes and water fills the surrounding shell.
shutoff valve Devices used to isolate one part of the refrigeration system from
the rest.
sight glass, moisture-indicating A device installed in the liquid line, upstream
of the expansion valve, used to detect moisture in the system and determine if
the liquid refrigerant has flashed into vapor before entering the expansion
valve.
solenoid valve A device used to stop the flow of refrigerant within the
refrigeration system.