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Ammonia Refrigeration Final Exam Questions and Answers (Latest Update 2024)
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Ammonia Refrigeration Final Exam Questions and Answers (Latest Update 2024)
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Ammonia Refrigeration Final ExamQuestions and Answers (Latest Update
2024)
Convection is the transfer of ____ - Correct Answer ✅ heat
through a material or substance
Radiation is the ____ - Correct Answer ✅ projection of heat
like the heat radiated by the sun or by an open flame
T or F: Heat is always on the move, traveling only in one
direction and always from hot to cold - Correct Answer ✅
false
What are two methods of heat transfer? - Correct Answer
✅ conduction and convection
What are two basic forms of refrigeration systems? - Correct
Answer ✅ direct expansion and gravity flooded
T or F: Conduction is the heat transferred due to the
temperature being different on one side of a room than the
other like the heat rising in a room - Correct Answer ✅ true
T or F: A basic refrigeration system consists of an expansion
device, an evaporator, a compressor, and a condenser
connected by a series of pipes - Correct Answer ✅ true
,Ammonia Refrigeration Final Exam
Questions and Answers (Latest Update
2024)
T or F: Compression occurs as the ammonia refrigerant
passes through the evaporator - Correct Answer ✅ false
T or F: The high side includes all components between the
pressure reduction device outlet to a point inside the
compressor - Correct Answer ✅ false
Heat contained in the area to be cooled and absorbed by the
ammonia refrigerant as it passes through the evaporator is
called? - Correct Answer ✅ the load
The low side of an ammonia refrigeration system consists
of ... - Correct Answer ✅ the pressure reduction device and
the condenser
T or F: Expansion occurs as the refrigerant flows through the
compressor - Correct Answer ✅ false
T or F: When a hand expansion valve is opened, pressure
behind the valve forces liquid ammonia through a small
opening causing a deliberate pressure drop to occur -
Correct Answer ✅ false
T or F: Evaporation takes place as the ammonia refrigerant
flows through the compressor - Correct Answer ✅ false
, Ammonia Refrigeration Final Exam
Questions and Answers (Latest Update
2024)
T or F: The evaporation process is completed when the
ammonia has passed through the evaporator - Correct
Answer ✅ true
Absolute pressure is the pressure read by a gauge, plus the
____ atmospheric pressure - Correct Answer ✅ ambient
T or F: A pumped liquid, or re-circulation single stage system
consists of a receiver, a king valve, a pressure reduction
device, an evaporator, a compressor, a condenser, a vessel, a
pump and an additional flow metering device - Correct
Answer ✅ true
Where is the worst place to have a leak in an ammonia
refrigeration system? - Correct Answer ✅ high pressure
liquid
How many BTUs does it take to convert 1 lb of saturated
ammonia to 1 lb of saturated gas? - Correct Answer ✅ 561
How many BTUs does it take to convert 1 lb of liquid water at
212° to steam as 212°F - Correct Answer ✅ 970
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