HVAC Excellence Refrigeration and
Charging
Belt driven machines offer the ability of selecting a compressor pace to match the weight.
True or False? - ANS-True
Common use for open compressors? - ANS-Automobile air conditioning
High condenser temp. The tougher a compressor has to paintings to transport the refrigerant
vapor out of the evaporator into the compressor. Requires extra horsepower.
True or False? - ANS-True
High evaporator temp. Boom the BTUH ability, requiring less horsepower for every BTU of
cooling.
True or False? - ANS-True
How are compressors diagnosed? - ANS-Mechanical parts that carry out the real pumping of
the refrigerant vapor.
How does a compressor lessen the quantity of fuel? - ANS-Squeezing it
Low condenser temp. Reduce horsepower required for each BTU of cooling, the extra its heat
removal capability.
True or False? - ANS-True
Low evaporator temp. Require extra horsepower for each BTU of cooling.
True or False? - ANS-True
Nonpositive Displacement Compressors also are called? - ANS-Centrifugal compressors
Theres always a closed role on a 3 position service valve.
True or False - ANS-False, there isn't always a closed function on these valves due to the fact
one of the two exit ports will continually be open.
Three function carrier valves have three ports and two seats.
True and False - ANS-True
Types of evaporators - ANS-1. Bare pipe evaporators
2. Plate evaporators
Charging
Belt driven machines offer the ability of selecting a compressor pace to match the weight.
True or False? - ANS-True
Common use for open compressors? - ANS-Automobile air conditioning
High condenser temp. The tougher a compressor has to paintings to transport the refrigerant
vapor out of the evaporator into the compressor. Requires extra horsepower.
True or False? - ANS-True
High evaporator temp. Boom the BTUH ability, requiring less horsepower for every BTU of
cooling.
True or False? - ANS-True
How are compressors diagnosed? - ANS-Mechanical parts that carry out the real pumping of
the refrigerant vapor.
How does a compressor lessen the quantity of fuel? - ANS-Squeezing it
Low condenser temp. Reduce horsepower required for each BTU of cooling, the extra its heat
removal capability.
True or False? - ANS-True
Low evaporator temp. Require extra horsepower for each BTU of cooling.
True or False? - ANS-True
Nonpositive Displacement Compressors also are called? - ANS-Centrifugal compressors
Theres always a closed role on a 3 position service valve.
True or False - ANS-False, there isn't always a closed function on these valves due to the fact
one of the two exit ports will continually be open.
Three function carrier valves have three ports and two seats.
True and False - ANS-True
Types of evaporators - ANS-1. Bare pipe evaporators
2. Plate evaporators
