Question 5.16: Propane enters a heat exchanger, as shown in Figure 5.18, at...
Propane enters a heat exchanger, as shown in Figure 5.18, at 4 °C at a mass flow rate of 32.6 kg/s to be heated with exhaust gases for later use at a constant pressure of 1 MPa. The exhaust gases flow at a rate of 2.484 × 10^5 kg/h and a temperature of 400 °C. Treat both propane and exhaust gases as ideal gases. (a) Write the mass, energy, entropy, and exergy balance equations, (b) calculate the exit temperatures of propane and exhaust air, (c) calculate the heat rate transferred to the propane, and (d) determine the entropy generation rate and exergy destruction rate.
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