For obtaining high COP, the pressure range of compressor should be

Q. For obtaining high COP, the pressure range of compressor should be

1. High
2. Low
3. Optimum
4. Any value

Answer: Low

For obtaining high COP, the pressure range of compressor should be low.

The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work required. Higher COPs equate to lower operating costs. The COP usually exceeds 1.

The equation is:

${\displaystyle {\rm {COP}}={\frac {Q}{W}}}$

where

• Q is the useful heat supplied or removed by the considered system.
• W is the work required by the considered system.

To improve the coefficient of performance, it requires that the compressor work should decrease and the refrigeration effect should increase. It means that decrease in condenser pressure and temperature so the refrigeration effect will increase and compressor input work due to this cop will increase.