HVACR PACKAGE DEAL CERTIFICATION
EVALUATION 2026 FULL QUESTIONS AND
CORRECT ANSWERS
◉ How does a compression cycle refrigeration system move heat
from a relatively cold temperature to a relatively warm temperature?
Answer: It boils refrigerant at a low pressure and temperature to
absorb heat inside and condenses refrigerant at a high temperature
and pressure to release heat outside
◉ Explain why boiling is considered a cooling process.
Answer: Boiling requires heat. When a liquid boils it extracts heat
from whatever it is touching.
◉ List the four major components of the compression refrigeration
cycle in order
Answer: Compressor, condenser, metering device, evaporator
◉ Why do both the compression cycle and absorption cycle have a
high pressure side and a low pressure side?
Answer: The low pressure side allows refrigerant to boil at a
temperature below the temperature of the space being cooled,
absorbing heat. The high side pressure allows the refrigerant to
,condense at a temperature higher than the outdoor temperature,
releasing heat.
◉ What components are responsible for maintaining the high and
low pressures in a compression refrigeration system?
Answer: The compressor and the metering device.
◉ What are the three refrigerant conditions inside a compression
cycle system?
Answer: Saturated, Superheated, and subcooled
◉ What components are responsible for maintaining the high and
low pressures in an absorption refrigeration system?
Answer: The generator, the absorber, and the solution pump
◉ What are the two cycles that make an absorption system work?
Answer: The refrigeration cycle and the solution cycle
◉ Explain how an evaporative cooling system works.
Answer: Water flows over media and air is pulled across the wetted
media. Some of the water evaporates, cooling off the air.
◉ Where is evaporative cooling the most effective?
, Answer: Dry climates, like the southwestern United States.
◉ What is the advantage of the Maisotsenko Cycle?
Answer: The Maisotsenko Cycle can reduce the air temperature
more than standard evaporative coolers and is effective in areas that
traditional evaporative coolers are not.
◉ What acts as the refrigerant in a thermoelectric refrigeration
system?
Answer: The electric current.
◉ What is the Pelletier effect?
Answer: When a DC current passes throogh a thermocouple, one
junction heats up and the other junctioin cools off.
◉ Explain how a thermoelectric refrigeration system works.
Answer: When DC current is passed through a thermocouple made
of two dissimilar metals, one junction absorbs heat and the other
releases heat. This is called the Pelletier effect.
◉ What is the purpose of refrigeration?
Answer: To move heat from where it is not wanted to where it is
unobjectionable or can be used.
EVALUATION 2026 FULL QUESTIONS AND
CORRECT ANSWERS
◉ How does a compression cycle refrigeration system move heat
from a relatively cold temperature to a relatively warm temperature?
Answer: It boils refrigerant at a low pressure and temperature to
absorb heat inside and condenses refrigerant at a high temperature
and pressure to release heat outside
◉ Explain why boiling is considered a cooling process.
Answer: Boiling requires heat. When a liquid boils it extracts heat
from whatever it is touching.
◉ List the four major components of the compression refrigeration
cycle in order
Answer: Compressor, condenser, metering device, evaporator
◉ Why do both the compression cycle and absorption cycle have a
high pressure side and a low pressure side?
Answer: The low pressure side allows refrigerant to boil at a
temperature below the temperature of the space being cooled,
absorbing heat. The high side pressure allows the refrigerant to
,condense at a temperature higher than the outdoor temperature,
releasing heat.
◉ What components are responsible for maintaining the high and
low pressures in a compression refrigeration system?
Answer: The compressor and the metering device.
◉ What are the three refrigerant conditions inside a compression
cycle system?
Answer: Saturated, Superheated, and subcooled
◉ What components are responsible for maintaining the high and
low pressures in an absorption refrigeration system?
Answer: The generator, the absorber, and the solution pump
◉ What are the two cycles that make an absorption system work?
Answer: The refrigeration cycle and the solution cycle
◉ Explain how an evaporative cooling system works.
Answer: Water flows over media and air is pulled across the wetted
media. Some of the water evaporates, cooling off the air.
◉ Where is evaporative cooling the most effective?
, Answer: Dry climates, like the southwestern United States.
◉ What is the advantage of the Maisotsenko Cycle?
Answer: The Maisotsenko Cycle can reduce the air temperature
more than standard evaporative coolers and is effective in areas that
traditional evaporative coolers are not.
◉ What acts as the refrigerant in a thermoelectric refrigeration
system?
Answer: The electric current.
◉ What is the Pelletier effect?
Answer: When a DC current passes throogh a thermocouple, one
junction heats up and the other junctioin cools off.
◉ Explain how a thermoelectric refrigeration system works.
Answer: When DC current is passed through a thermocouple made
of two dissimilar metals, one junction absorbs heat and the other
releases heat. This is called the Pelletier effect.
◉ What is the purpose of refrigeration?
Answer: To move heat from where it is not wanted to where it is
unobjectionable or can be used.
