The used coolant mainly infleunces these numbers. check chart on: https://www.researchgate.net/figure/Coefficient-of-performance-COP-versus-evaporating-temper

The used coolant mainly infleunces these numbers. check chart on: https://www.researchgate.net/figure/Coefficient-of-performance-COP-versus-evaporating-temperature-at-condensing-temperature_fig6_264859123 https://www.researchgate.net/figure/Coefficient-of-performan...