application of thermodynamics

Application of Thermodynamics: Heat Engine, Heat pump and Refrigeration | Working |

Thermodynamics has a wide range of applications in various fields, including physics, chemistry, engineering, biology, and material science. Here are some of the key applications of thermodynamics- heat engine, heat pump and refrigeration.

Heat engine:

In thermodynamics we use heat energy and convert it into mechanical energy. Heat is absorbed from a high-temperature reservoir and some of it is turned into work and the rest of the heat is discarded into a heat sink.

This means W =Q2-Q1, where Q2=input heat.

                                            Q1=rejected heat after work.

heat engine
heat engine

Heat pump:

Heat pump is a mechanical device that is used to remove heat like an air conditioning system. Here our electric power is converted into mechanical energy and heat is taken from a high-temperature region and is released in the surroundings.

                                     C.O.P =Q2/W =Q2/ Q2-Q1.

                              C.O.P IS ALWAYS >1.

heat pump

Refrigeration:

Refrigerator system is similar to a heat pump but it works over a closed area or system. Here refrigerant is used and it will run in a cycle and this refrigerant will take the heat from inside and it goes through some process and in this process heat is rejected into the surroundings. The cycle runs continuously and decreases the temperature inside.

C.O.P =Q1/W

           =Q1/Q2-Q1

C.O.P CAN BE >1, <1, OR =1.

refer system

Note:

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[…] The basic components of a refrigeration system include a compressor, a condenser, an expansion valve, and an evaporator. The compressor pumps the refrigerant through the system, and the refrigerant absorbs heat as it passes through the evaporator. The heated refrigerant then moves to the condenser, where it releases the heat into the environment before returning to the compressor to repeat the cycle. […]

[…] properties of refrigerants are important for the efficient and safe operation of refrigeration and air conditioning systems. These properties can vary depending on the specific application and system design, but […]