Refrigeration and Air Conditioning
Formation of frost on evaporator in refrigerator

Is immaterial
Increases heat transfer rate
Results in loss of heat due to poor heat transfer
Can be avoided by proper design

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Refrigeration and Air Conditioning
The reciprocating refrigerant compressors are very suitable for

Small displacements and high condensing pressures
Large displacements and low condensing pressures
Large displacements and high condensing pressures
Small displacements and low condensing pressures

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