engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Refrigeration and Air Conditioning Refrigeration Cycles and Devices
In a vapour-compression refrigeration cycle, if h1 and h2 denote the enthalpies at inlet and exit of the compressor, respectively, h3 is the enthalpy at the exit of the condenser and h4 is the enthalpy at the inlet of the evaporator, then COP for the cycle is
1
\(\frac{{{h_1} - {h_3}}}{{{h_2} - {h_3}}}\)
2
\(\frac{{{h_1} - {h_4}}}{{{h_2} - {h_3}}}\)
3
\(\frac{{{h_1} - {h_3}}}{{{h_2} - {h_1}}}\)
4
\(\frac{{{h_2} - {h_1}}}{{{h_1} - {h_4}}}\)