申論題

273.15 K = 0℃. Molecular weights of air and water are 28.97 kg/kmol and 18 kg/kmol, respectively. Universal gas constant = 8.314 kJ/kmol-K. I ton =1000 kg.
1. A regenerative power cycle with one open feedwater heater is given in Figure 1 where the operation conditions are summarized in Table 1. For a net power of 248 MW, determine (a) the temperature T₂ in℃, (b) the quality x₃, (c) the temperature T₄, in ℃, (d) the temperature T₅, in 'C. in℃, (e) the temperature T₆ in ℃, (f) the temperature T₇in℃, (g) the fraction of the total flow not entering the second turbine y, (h) thermal efficiency η, and (i) the mass flow rate of water m, in ton/hr. (36%)