engineering recuitment BEL Probationary Engineers Mock Test 2025 Refrigeration and Air Conditioning Refrigeration Cycles and Devices Refrigeration Devices
An air-air heat pump system adopted for year-round-conditioning can be achieved if the following devices reverse its duties during summers and winters
1
Evaporator, Condenser
2
Compressor, Expander
3
Compressor, Condenser
4
Evaporator, Expander