Can you use a heat pump to provide the temperature difference to run a heat engine?
Yes, a heat engine runs on heat.
Yes, a heat pump moves heat.
No, heat is not created.
No, the heat supplied does not create a large enough temperature difference.

No,we cannot use  heat pump to provide the temperature difference to run a heat engine.

Explanation:

In a heat pump energy is transferred from the heat source to the heat sink whereas in the heat engine energy is transferred from a higher temperature level to a lower  temperature level called sink.In a heat engine the heat energy is converted into mechanical energy

hi there!

your question asks at which segment does freezing occur.

since we're talking about water, the freezing point of water will be 32 degrees fahrenheit or below.

hope this ! ~

attach the statements so i can answer : )