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In which of the following pipes the higher-velocity refrigerant is closer to the inner walls of the pipe:
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Which of the following diagram is also known as Mollier diagram:
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As the condensing temperature increases, centrifugal compressor capacity _______ :
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As the Suction pressure comes down, the compressor capacity will ______:
The pressure drop caused in the suction filter will be ____:
At the right end of the dew point lines, the vertical scale is the Dry bulb temperature:
R-410a is the best replacement for R-22 refrigerant
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Vertical lines in Psychromteric charts indicate constant ______ in °C or °F:
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Smoke detectors shall be installed in return air systems with a design capacity greater than ________ cfm.
A minimum openable area to the outdoors shall be ______ percent of the floor area being naturally ventilated.
Vapor can be present in the liquid line, if there is _______ pressure drop in the liquid line:
The CFC and HCFC refrigerants were:
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