RI Journeyman's Refrigeration License Questions and Answers
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Module
RI Journeyman\'s Refrigeration License
Institution
RI Journeyman\'s Refrigeration License
The temperature scale that freezes water at 32 deg. and boils water at 212 deg. is known
as the ___________ scale
o :## Fahrenheit
The temperature scale that freezes water at 0 deg. and boils water at 100 deg. is known
as the __________ scale.
o :## Centigrade
The definition of specific hea...
RI Journeyman's Refrigeration License Questions and
Answers
The temperature scale that freezes water at 32 deg. and boils water at 212 deg. is known
as the ___________ scale
o :## Fahrenheit
The temperature scale that freezes water at 0 deg. and boils water at 100 deg. is known
as the __________ scale.
o :## Centigrade
The definition of specific heat is _______________________
o :## the amount of heat required to raise 1 lb of a substance 1 deg. F.
The definition of sensible heat is ______
o :## the heat that can be measured by a thermometer.
The definition of latent heat is ______
o :## the heat used which causes a change of state
The definition of a BTU is ________
o :## the amount of heat required to raise 1 lb of water 1 deg. F
, 2024/2025 2|Page
Heat energy is measured in _________
o :## BTU
Three states of matter are _________
o :## Solid, Liquid, and Gas
One ton of refrigeration is equal to __________
o :## 12,000 btu per hour
____________ is the type of heat that is absorbed or extracted from a substance when the
substance changes state
o :## Latent Heat
When a substance changes from a liquid to a gas, this is known as the________________
o :## latent heat of vaporization
When a substance changes from a gas to a liquid, this is known as the________________
o :## latent heat of condensation.
When a substance changes from a solid to a gas, this is known as the________________
o :## the latent heat of sublimation
, 2024/2025 3|Page
In a refrigeration system, heat is absorbed by ______________
o :## the latent heat of vaporization in the evaporator.
In a refrigeration system, heat is rejected by _________
o :## the latent heat of condensation in the condenser.
Frost is
o :## adsorbed by the evaporator
The relationship of absolute pressure on the low side to the absolute pressure on the high
side is called the ___________
o :## compression ratio
________________________________ Is called the refrigerating effect
o :## The amount of heat absorbed by the refrigerant used
Generally speaking the ____________________ is the type of system that gives the
greatest rate of heat transfer
o :## flooded evaporator
________________ the total amount of heat present in a given substance.
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o :## Enthalpy is
When hot air remains at the top of a room and cold air at the bottom you will have an
occurrence of a condition known as ___________
o :## stratified air.
The ____ State of a substance will have the highest heat content.
o :## vapor
One cubic foot of air at 50 deg F can absorb _____________
o :## less moisture than it could at 100 deg. F.
A Boudelot cooler ________________
o :## is a heat exchanger
When placed in a bucket of water, the refrigeration effect of 32 deg F. Ice will always be
______________
o :## 144 btu per pound.
____________________________ Is called the ambient temperature.
o :## The temperature of the air that surrounds any object
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