![]() ![]() ![]() Using this in the above equation, we getįrom Equation (16.1), we have TdS = dU + pdVīut dU = 0 therefore TdS = 0 + pdV = pdVġ6.2.7. Therefore a reversible adiabatic process is an isentropic processįor an irreversible adiabatic process, for unit mass, we have,īut for a gas. 16.5):įor reversible adiabatic process, we have, Reversible and an irreversible adiabatic process (isentropic process)(Fig. Constant temperature process (Isothermal process) (Fig. Constant pressure process (Isobaric process) (Fig. Constant volume process (Isochoric process) (Fig. Polytropic processes on P-v and T-s diagrams.ġ6.2.1. The entropy change in these processes is determined as follows.įig. Various processes are shown on p-v and T-s diagrams in Fig. ENTROPY CHANGE IN A PROCESS FOR IDEAL GAS: ![]()
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