As per ASHRAE which of the following refrigerant has non evidence of toxicity is identified:
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Fluorocarbons decompose when exposed directly to ____ temperatures
_____ is the amount of heat required to change the refrigerant from a liquid to a gas
HFC refrigerant can cause which of the following:
Hydrocarbon refrigerants are less flammable
Most of the CFCs refrigerants are not miscible with mineral oils:
In halide leak test, if there is a freon refrigerant leak the flame will turn ______:
Latent heat of refrierant is expressed in Btu per second
With no superheating of the suction gas, the gas enters the compressor particularly at ______ condition:
During the defrost cycle, the evaporator fan has to run:
Refrigerant should have higher critical pressure
Which of the following refrigerant has the least tendency to leak:
The refrig’erant pressure at the lower side should be as near atmospheric pressure as possible
The compression ratio _______ when the evaporating temperature rises:
On starting the compressor, the evaporator / suction pressure will:
Ammonia refrigerant has high discharge pressure:
Water is considered a refrigerant. What is its name?
As the superheat increases, the compressor capacity ________:
If the critical pressure of the refrigerant is ______, the power required for compressing the vapor goes up:
Support bracing for 1 1/4" copper tubing shall be at interavals no less than _______ feet.