Heat Engines and the Second Law of Thermodynamics
23. The Second Law of Thermodynamics / Heat Engines and the Second Law of Thermodynamics / Problem 4
A cooling unit operates with a Carnot cycle between -15°C and 30°C. Find how much (i) heat is dissipated into the surrounding environment and (ii) energy must be supplied to the cooling unit in order to bring 18 kg of a liquid substance from 30°C to its solidification point at 5°C. Its latent heat of fusion (Lf) is 2.34 × 105 J/kg.
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