Theory+ Problem 1& 2 on Kelvin Planck statement & Clausius statement, Second law of Thermodynamics

Описание: 1. What is Kelvin-Planck statement and Clausius Statement?

2. Solve 1 problem for Kelvin-Planck statement and Clausius Statement each.

A reversible engine is supplied with heat from two constant temperature sources at 900 K and 600 K and rejects heat to the constant temperature sink at 300 K. The engine develops work equivalent to 90 kJ/s and rejects heat at the rate of 56 kJ/s

Estimate
1. Heat supplied by each source
2. Thermal efficiency of the engine



A domestic food freezer maintains a temperature of -15°C . The ambient temperature is 30°C The heat leaks into the freezer at 1.75 kJ/s What is the minimum power necessary to pump the heat out?


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