Question

state second law of thermodynamics.how is heat engine different from a refrigerator ​

Answer 1

Answer:

Explanation:The Second Law of Thermodynamics states that the state of entropy of the entire universe, as an isolated system, will always increase over time. The second law also states that the changes in the entropy in the universe can never be negative.

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Answer 2

According to second law of thermodynamics, the entropy of a system (isolated), can not decrease. It can remain constant if all the processes are reversible. An isolated system can spontaneously evolve to a thermodynamic equilibrium (a state having maximum entropy).

In a heat engine, heat is transferred from a source at higher temperature to a sink at lower temperature. A refrigerator is a reverse of a heat engine.

In a refrigerator, the heat energy transfers from sink at lower temperature and take mechanical work and convert it into heat energy to give out to source at higher temperature.

Learn more about: Laws of thermodynamics

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