2013-3-6 Learning Outcomes,cont. Represent heat transfer in an internally reversible process as an area on a temperature-entropy diagram. Apply entropy balances to closed systems and control volumes. Evaluate isentropic efficiencies for turbines,nozzles,compressors,and pumps. Introducing Entropy Change and the Entropy Balance Mass and energy are familiar extensive properties of systems.Entropy is another important extensive property. Just as mass and energy are accounted for by mass and energy balances,entropy is accounted for by an entropy balance. Like mass and energy,entropy can be transferred across the system boundary. 2 2013-3-6 2 Learning Outcomes, cont. ►Represent heat transfer in an internally reversible process as an area on a temperature-entropy diagram. ►Apply entropy balances to closed systems and control volumes. ►Evaluate isentropic efficiencies for turbines, nozzles, compressors, and pumps. Introducing Entropy Change and the Entropy Balance ►Mass and energy are familiar extensive properties of systems. Entropy is another important extensive property. ►Just as mass and energy are accounted for by mass and energy balances, entropy is accounted for by an entropy balance. ►Like mass and energy, entropy can be transferred across the system boundary