engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Refrigeration and Air Conditioning Refrigeration Cycles and Devices Vapour Compression (V-C) Cycle
An ideal vapour compression refrigerator operates between a condenser pressure p1 and an evaporator pressure p2. Which of the following changes would increase its COP?
1
Increasing p1 by Δp and keeping p2 constant
2
Decreasing p2 by Δp and keeping p1 constant
3
Adopting wet compression
4
Subcooling the refrigerant