Exploring Exergy Concepts
Two solid blocks, each having mass m and specific heat c, and initially at temperatures T1 and T2, respectively, are brought into contact, insulated on their outer surfaces, and allowed to come into thermal equilibrium.
(a) Derive an expression for the exergy destruction in terms of m, c, T1, T2, and the temperature of the environment, T0.
(b) Demonstrate that the exergy destruction cannot be negative.
(c) What is the source of exergy destruction in this case?
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