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For the thermodynamic heat pump, heat flows from:

  1. Higher temperature to lower temperature
  2. Lower temperature to higher temperature
  3. Heat does not flow
  4. None of these

Answer (Detailed Solution Below)

Option 2 : Lower temperature to higher temperature
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Detailed Solution

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CONCEPT:

Heat pump:

  • A heat pump is a device that maintains a system or a body at a temperature higher than the surrounding temperature.
  • In the heat pump, the heat is removed from the low-temperature body and is added to the high-temperature body.
  • Generally, the surrounding atmosphere acts as the low-temperature body for a heat pump.

EXPLANATION:

  • A heat pump is a device that maintains a system or a body at a temperature higher than the surrounding temperature.
  • In the heat pump, the heat is removed from the low-temperature body and is added to the high-temperature body. Hence, option 2 is correct.

Additional Information

​Coefficient of Performance:

  • The coefficient of performance is defined as the ratio of the desired output to the work input.
  • The coefficient of performance of a heat pump is given as,


Where QL = heat removed from the surrounding, QH = heat given to the system, W = work input, TH = temperature of the system, and TL = temperature of the surrounding

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