INDUSTRIAL REFRIGERATION BOOK
1 QUESTIONS & ANSWERS 100%
CORRECT
What is the purpose of a refrigeration system? - ANSWERTo maintain a temperature
Operators must keep refrigeration systems operating safely and efficiently. What is
the required knowledge for this to be possible? - ANSWERBasic physical principles,
interpretation of information from temperature and pressure gauges, basic operating
principles.
Mechanical refrigeration is a series of steps that(____). - ANSWERmoves heat
energy from the space or object to an area where It can do no harm.
Which of the following secondary cooling devices operates as a thermal storage
device? - ANSWERIce builder
The pumped recirculated type evaporator____. - ANSWERUses a vessel known as
a pumped liquid recirculator.
Compared to other freezers, blast freezer applications require_____. -
ANSWERLess time to freeze the product.
Frost build-up on the surface of air coolers______. - ANSWERReduces heat transfer
into the coil.
The latent heat of condensation of a substance is the same as______ -
ANSWERThe latent heat of evaporation of a substance at the same pressure.
Saturated conditions are found______ - ANSWERIn both an evaporator and a
condenser.
Flash gas is _____ - ANSWERFormed at the point of expansion.
What are the four necessary components of a mechanical refrigeration system? -
ANSWERExpansion device, evaporator, compressor, condenser.
Which of the following is NOT a true statement about heat of compression? -
ANSWERIt improves the operating efficiency of most systems by improving the
condensing rate.
, A conventional mechanical refrigeration system is considered _____ -
ANSWERclosed loop system
Plate freezers achieve fast freezing because of_____. - ANSWERDirect package
contact with the plates and direct refrigerant contact with the plates.
Heat energy always flows (____). - ANSWERfrom an object of higher temperature to
an object of lower temperature
Sensible heat is? - ANSWERHeat that causes a change in temperature but does not
cause a change of state.
Latent heat is? - ANSWERHeat energy that causes a change of state but does not
cause a change of temperature.
What is an example of heat transfer by convection? - ANSWERWarm air rising and
cold air falling.
How does the refrigeration technician/operator know what the conditions are within a
refrigeration system? - ANSWERBy using his knowledge of system basic operating
principles to evaluate temperature and pressure readings.
What is the scale used to measure Fahrenheit temperature absolute? -
ANSWERRankine
What is used to measure the quantity of heat energy? - ANSWERBritish thermal
units (BTUs) or calories.
When calculating the BTUs that have been removed to change the temperature of
substance, what combination is used? - ANSWERPounds of substance, temperature
difference, specific heat.
Latent Heat of Vaporization is?
A. - ANSWERThe heat energy required to cause liquid to become vapor.
Pressure is a measure of what? - ANSWERThe relationship of force being applied
over a given area.
What is the relationship between temperature difference and heat flow? -
ANSWERThe greater the temperature difference, the more rapid the heat flows.
specific heat? - ANSWERIs greater if the substance requires more heat energy to
increase the temperature.
Temperature is a measure of ____. - ANSWERThe intensity of the heat energy in an
object.
If the force acting on an area of 5 square inches is 150 lbs., what is the pressure? -
ANSWER30lb./sq in
1 QUESTIONS & ANSWERS 100%
CORRECT
What is the purpose of a refrigeration system? - ANSWERTo maintain a temperature
Operators must keep refrigeration systems operating safely and efficiently. What is
the required knowledge for this to be possible? - ANSWERBasic physical principles,
interpretation of information from temperature and pressure gauges, basic operating
principles.
Mechanical refrigeration is a series of steps that(____). - ANSWERmoves heat
energy from the space or object to an area where It can do no harm.
Which of the following secondary cooling devices operates as a thermal storage
device? - ANSWERIce builder
The pumped recirculated type evaporator____. - ANSWERUses a vessel known as
a pumped liquid recirculator.
Compared to other freezers, blast freezer applications require_____. -
ANSWERLess time to freeze the product.
Frost build-up on the surface of air coolers______. - ANSWERReduces heat transfer
into the coil.
The latent heat of condensation of a substance is the same as______ -
ANSWERThe latent heat of evaporation of a substance at the same pressure.
Saturated conditions are found______ - ANSWERIn both an evaporator and a
condenser.
Flash gas is _____ - ANSWERFormed at the point of expansion.
What are the four necessary components of a mechanical refrigeration system? -
ANSWERExpansion device, evaporator, compressor, condenser.
Which of the following is NOT a true statement about heat of compression? -
ANSWERIt improves the operating efficiency of most systems by improving the
condensing rate.
, A conventional mechanical refrigeration system is considered _____ -
ANSWERclosed loop system
Plate freezers achieve fast freezing because of_____. - ANSWERDirect package
contact with the plates and direct refrigerant contact with the plates.
Heat energy always flows (____). - ANSWERfrom an object of higher temperature to
an object of lower temperature
Sensible heat is? - ANSWERHeat that causes a change in temperature but does not
cause a change of state.
Latent heat is? - ANSWERHeat energy that causes a change of state but does not
cause a change of temperature.
What is an example of heat transfer by convection? - ANSWERWarm air rising and
cold air falling.
How does the refrigeration technician/operator know what the conditions are within a
refrigeration system? - ANSWERBy using his knowledge of system basic operating
principles to evaluate temperature and pressure readings.
What is the scale used to measure Fahrenheit temperature absolute? -
ANSWERRankine
What is used to measure the quantity of heat energy? - ANSWERBritish thermal
units (BTUs) or calories.
When calculating the BTUs that have been removed to change the temperature of
substance, what combination is used? - ANSWERPounds of substance, temperature
difference, specific heat.
Latent Heat of Vaporization is?
A. - ANSWERThe heat energy required to cause liquid to become vapor.
Pressure is a measure of what? - ANSWERThe relationship of force being applied
over a given area.
What is the relationship between temperature difference and heat flow? -
ANSWERThe greater the temperature difference, the more rapid the heat flows.
specific heat? - ANSWERIs greater if the substance requires more heat energy to
increase the temperature.
Temperature is a measure of ____. - ANSWERThe intensity of the heat energy in an
object.
If the force acting on an area of 5 square inches is 150 lbs., what is the pressure? -
ANSWER30lb./sq in
