63
Glossary
This glossary is published for informational purposes only and
the information being furnished herein should not be
considered as all-inclusive or meant to cover all contingencies.
NOTE: Additional terms not found in the glossary may be
located in the index section of this manual.
accumulator: A device located in the suction line to collect
liquid refrigerant and meter it safety back to the compressor as
gas.
ambient air temperature: Temperature of the air
surrounding an object.
amp: Abbreviation for ampere. The basic measuring unit of
electrical current.
bar: A metric unit of pressure. 1 bar = 100 kPa = 14.5 psi.
Battery Sentry: Part of the CYCLE-SENTRY
™
system. The
Battery Sentry module monitors alternator charge rate and will
keep the unit running until the battery is adequately charged.
box temperature: The temperature within a
temperature-controlled compartment.
Btu (british thermal unit): The quantity of heat required to
raise the temperature of one pound of water by one degree
Fahrenheit. 1 Btu = 252 calories.
bulkhead: 1) return air bulkhead. A metal or plastic “wall”
placed at the front of the box to prevent loading of product
tightly against the Thermo King unit. (Loading too close to the
unit restricts air flow and system efficiency.) 2) bulkhead
divider. A thick, insulated “wall” used to separate
compartments of a multi-temperature truck or trailer.
calorie: The amount of heat required to raise temperature of
one gram of water one degree Celsius. 1 calorie = 0.004 Btu.
Celsius: The metric unit of temperature measurement. The
preferred alternate to the term centigrade. Abbreviated “C.”
centigrade. See Celsius.
63
Glossary
This glossary is published for informational purposes only and
the information being furnished herein should not be
considered as all-inclusive or meant to cover all contingencies.
NOTE: Additional terms not found in the glossary may be
located in the index section of this manual.
accumulator: A device located in the suction line to collect
liquid refrigerant and meter it safety back to the compressor as
gas.
ambient air temperature: Temperature of the air
surrounding an object.
amp: Abbreviation for ampere. The basic measuring unit of
electrical current.
bar: A metric unit of pressure. 1 bar = 100 kPa = 14.5 psi.
Battery Sentry: Part of the CYCLE-SENTRY
™
system. The
Battery Sentry module monitors alternator charge rate and will
keep the unit running until the battery is adequately charged.
box temperature: The temperature within a
temperature-controlled compartment.
Btu (british thermal unit): The quantity of heat required to
raise the temperature of one pound of water by one degree
Fahrenheit. 1 Btu = 252 calories.
bulkhead: 1) return air bulkhead. A metal or plastic “wall”
placed at the front of the box to prevent loading of product
tightly against the Thermo King unit. (Loading too close to the
unit restricts air flow and system efficiency.) 2) bulkhead
divider. A thick, insulated “wall” used to separate
compartments of a multi-temperature truck or trailer.
calorie: The amount of heat required to raise temperature of
one gram of water one degree Celsius. 1 calorie = 0.004 Btu.
Celsius: The metric unit of temperature measurement. The
preferred alternate to the term centigrade. Abbreviated “C.”
centigrade. See Celsius.
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