Question

Assertion :.A geothermal heat pump operating at 3.5, provides 3.5 units of heat for each unit of energy consumed. Reason: CoP is the efficiency of required work to be done.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

Answer: (A)

Coefficient of performance (COP), is an expression of the efficiency of a heat pump.

And, A geothermal heat pump operating at a $CO{P}_{heating}$ of 3.5 provides 3.5 units of heat for each unit of energy consumed (i.e. 1 kWh consumed would provide 3.5 kWh of output heat). The output heat comes from both the heat source and 1 kWh of input energy, so the heat-source is cooled by 2.5 kWh, not 3.5 kWh.