Chapter 15 Thermal cycles

15.1 Entropy

15.1.1 Introduction

You have seen from section 14.1.2, when we were discussing reversible displacement work, how the incremental work done was given by dWrev = pdV and that the total work done during the process, between the two states, was given by Suppose now that a system undergoes the same reversible process from state 1 to state 2, and that during an infinitesimal (incremental) part of the process an amount of heat dQrev is transferred to or from the system, at temperature T; then a property, the

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