Using Exergetic Efficiencies Figure P7.131 and the accompanying table provide s...

Using Exergetic Efficiencies

Figure P7.131 and the accompanying table provide steady-state operating data for a cogeneration system that produces power and 50,000 lb/h of process steam. Stray heat transfer and the effects of motion and gravity are negligible. The isentropic pump efficiency is 100%. Determine

(a) the net power developed, in Btu/h.

(b) the net exergy increase of the water passing through the steam generator, in Btu/h.

(c) a full exergy accounting based on the net exergy supplied to the system found in part (b).

(d) Using the result of part (c), devise and evaluate an exergetic efficiency for the overall cogeneration system. Comment.

Let T₀ = 70^oF, p₀ = 1 atm.

(e)