ESCO Final Exam questions with Correct Verified
Answers
a liquid to suction heat exchanger is often used to - ANS increase liquid subcooling
the term refrigerant conditions refer to which of the following - ANS saturated,
superheat, or subcooling refrigerant
the component in the refrigeration system used to catch and prevent liquid from
entering the compressor is called - ANS the accumulator
an air conditioning system or heat pump must have - ANS 400-450 CUBIC FEET OF AIR
PER MIN ACROSS THE EVAPORATOR COIL.
the refrigerant charge in a txv remote bulb or power element must - ANS have similar
characteristics to the refrigerant in the system
the remote bulb of a txv should be fastened to the - ANS outlet of the ecaporator
which of the following is true, of a solenoid valve in a pump down system - ANS it is
located before the metering device
the evaporator temperature on an air conditioning system should be - ANS 40 - 50
degrees F
the second-best way to charge a capillary tube system is - ANS use the superheat
charging table or curve
, a partially clogged capillary tube can cause - ANS a starved evaporator
the purpose of the liquid pressure amplification is to - ANS help prevent flashing and
increase subcooling
the pressure at which the refrigerant changes state, from a vapor to a liquid is the - ANS
condensing pressure
the basic components of a refrigeration system are - ANS compressor, discharge line,
receiver, metering device, evaporator, and suction line
a pressure gauge place anywhere from the metering device to the compressor will - ANS
the low side or evaporating pressure
the factory superheat settings for txvs used with central air conditioning systems should
be - ANS about 10 degrees
superheat suppression is the pressure( produces' ) of - ANS injecting liquid refrigerant
into the discharge line
in the evaporator - ANS Heat is transferred from the refrigerated space to the
refrigerant.
the greatest need for subcooling the refrigerant is to - ANS prevent liquid line flash, thus
making the system much more efficient
always change a txv/receiver/sight glass system under a - ANS high load condition
Answers
a liquid to suction heat exchanger is often used to - ANS increase liquid subcooling
the term refrigerant conditions refer to which of the following - ANS saturated,
superheat, or subcooling refrigerant
the component in the refrigeration system used to catch and prevent liquid from
entering the compressor is called - ANS the accumulator
an air conditioning system or heat pump must have - ANS 400-450 CUBIC FEET OF AIR
PER MIN ACROSS THE EVAPORATOR COIL.
the refrigerant charge in a txv remote bulb or power element must - ANS have similar
characteristics to the refrigerant in the system
the remote bulb of a txv should be fastened to the - ANS outlet of the ecaporator
which of the following is true, of a solenoid valve in a pump down system - ANS it is
located before the metering device
the evaporator temperature on an air conditioning system should be - ANS 40 - 50
degrees F
the second-best way to charge a capillary tube system is - ANS use the superheat
charging table or curve
, a partially clogged capillary tube can cause - ANS a starved evaporator
the purpose of the liquid pressure amplification is to - ANS help prevent flashing and
increase subcooling
the pressure at which the refrigerant changes state, from a vapor to a liquid is the - ANS
condensing pressure
the basic components of a refrigeration system are - ANS compressor, discharge line,
receiver, metering device, evaporator, and suction line
a pressure gauge place anywhere from the metering device to the compressor will - ANS
the low side or evaporating pressure
the factory superheat settings for txvs used with central air conditioning systems should
be - ANS about 10 degrees
superheat suppression is the pressure( produces' ) of - ANS injecting liquid refrigerant
into the discharge line
in the evaporator - ANS Heat is transferred from the refrigerated space to the
refrigerant.
the greatest need for subcooling the refrigerant is to - ANS prevent liquid line flash, thus
making the system much more efficient
always change a txv/receiver/sight glass system under a - ANS high load condition
