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An industrial heat pump operates between the temperatures of 27°C and -13°C. The rates of heat addition and heat rejection are 750 W and 1000 W, respectively. The COP for the heat pump is
  • a)
    7.5
  • b)
    6.5
  • c)
    4.0
  • d)
    3.0
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
An industrial heat pump operates between the temperatures of 27°C ...
Heat addition, Q2 = 750 W
Heat rejected, Q1 = 1000 W


T1 = 273 + 27º = 300ºK

 for actual heat pump
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Most Upvoted Answer
An industrial heat pump operates between the temperatures of 27°C ...
°C and 127°C. The heat pump has a coefficient of performance (COP) of 4.5. Calculate the heat input and heat output of the heat pump when it consumes 4000 J of electrical energy.

To find the heat input and heat output of the heat pump, we can use the formula:

COP = Heat output / Electrical energy

Given that the COP is 4.5 and the electrical energy is 4000 J, we can rearrange the formula to solve for the heat output:

Heat output = COP * Electrical energy

Heat output = 4.5 * 4000 J

Heat output = 18000 J

Therefore, the heat output of the heat pump is 18000 J.

To find the heat input, we can use the formula:

Heat input = Heat output + Electrical energy

Heat input = 18000 J + 4000 J

Heat input = 22000 J

Therefore, the heat input of the heat pump is 22000 J.
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An industrial heat pump operates between the temperatures of 27°C and -13°C. The rates of heat addition and heat rejection are 750 W and 1000 W, respectively. The COP for the heat pump isa)7.5b)6.5c)4.0d)3.0Correct answer is option 'C'. Can you explain this answer?
Question Description
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