NJ Blue Seal Refrigeration | Questions and Answers
On a single acting reciprocating compressor, what is the It allows constant speed control and stops and starts
function of a dual control device?
If a system were using an automatic expansion valve, The evaporator
where would the constant pressure be maintained at?
What is the main advantage of a cascade refrigeration Capable of reaching very low temperatures
system?
A false statement about lithium bromide used It is non-corrosive
in absorption systems:
What is a sling psychrometer used to measure? Relative humidity
Discribe the discharge gas from the compressor in a wet- Saturated
compression refrigeration system
If a cooling tower circulated 4,300 GPM of water, what is 4,300/3 = 1,433 tons
the cooling capacity in tons?
What condition would cause a system to not respond to Oil in the evaporator
an expansion valve adjustment?
What would have the least effect on the capacity of a The ambient air temperature
water cooled condenser?
What is the volume occupied by a refrigerant under Specific volume
specified conditions of pressure and temperature?
, What should cooling tower water pH be maintained at? 8
The absolute Celsius scale is referred to by which Kelvin
temperature scale?
Which devices control the high side float? Condenser and receiver
In Fahrenheit, what is the equivalent of -15 degrees 5 degrees F
Celsius?
If you had a flooded evaporator, which type of metering Low side float
device would you use?
What is the formula used to determine the number of Cycles = Tower water chlorides / makeup water chlorides
cycles of concentration for a cooling tower?
What determines the low side pressure in a refrigeration The evaporator flow rate
system?
What seal is not used on a refrigeration system? Mechanical
What water chemistry test is used to determine cooling Chlorides
tower cycles of concentration?
What would happen if you had a sudden drop in the Crystallization in the system
temperature in the cooling tower of a lithium bromide
absorption system?
Define the term "Refrigerant reclaiming" Chemically analyzing and distilling the refrigerant; Reprocessing the refrigerant
into a new product that can be reused; Selling reprocessed refrigerant as
reclaimed refrigerant
Describe the term "free air" Air at atmospheric conditions
How is the setting on a thermostic expansion valve rated? Degrees of superheat
Describe the operation of a single acting compressor The refrigerant gas is compressed on only one side of the piston
What would cause a noisy compressor? Lack of oil; dry or damaged seal; loose drive coupling
Thermostatic expansion valves are rated in what units of Tons of refrigeration
measurement?
If a cooling tower has a pH of 7.8, it is: Slightly alkaline
Where would you find flash gas in an efficiently operating In the evaporator
system?
On a single acting reciprocating compressor, what is the It allows constant speed control and stops and starts
function of a dual control device?
If a system were using an automatic expansion valve, The evaporator
where would the constant pressure be maintained at?
What is the main advantage of a cascade refrigeration Capable of reaching very low temperatures
system?
A false statement about lithium bromide used It is non-corrosive
in absorption systems:
What is a sling psychrometer used to measure? Relative humidity
Discribe the discharge gas from the compressor in a wet- Saturated
compression refrigeration system
If a cooling tower circulated 4,300 GPM of water, what is 4,300/3 = 1,433 tons
the cooling capacity in tons?
What condition would cause a system to not respond to Oil in the evaporator
an expansion valve adjustment?
What would have the least effect on the capacity of a The ambient air temperature
water cooled condenser?
What is the volume occupied by a refrigerant under Specific volume
specified conditions of pressure and temperature?
, What should cooling tower water pH be maintained at? 8
The absolute Celsius scale is referred to by which Kelvin
temperature scale?
Which devices control the high side float? Condenser and receiver
In Fahrenheit, what is the equivalent of -15 degrees 5 degrees F
Celsius?
If you had a flooded evaporator, which type of metering Low side float
device would you use?
What is the formula used to determine the number of Cycles = Tower water chlorides / makeup water chlorides
cycles of concentration for a cooling tower?
What determines the low side pressure in a refrigeration The evaporator flow rate
system?
What seal is not used on a refrigeration system? Mechanical
What water chemistry test is used to determine cooling Chlorides
tower cycles of concentration?
What would happen if you had a sudden drop in the Crystallization in the system
temperature in the cooling tower of a lithium bromide
absorption system?
Define the term "Refrigerant reclaiming" Chemically analyzing and distilling the refrigerant; Reprocessing the refrigerant
into a new product that can be reused; Selling reprocessed refrigerant as
reclaimed refrigerant
Describe the term "free air" Air at atmospheric conditions
How is the setting on a thermostic expansion valve rated? Degrees of superheat
Describe the operation of a single acting compressor The refrigerant gas is compressed on only one side of the piston
What would cause a noisy compressor? Lack of oil; dry or damaged seal; loose drive coupling
Thermostatic expansion valves are rated in what units of Tons of refrigeration
measurement?
If a cooling tower has a pH of 7.8, it is: Slightly alkaline
Where would you find flash gas in an efficiently operating In the evaporator
system?
