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**Q1:**From ESS, at P-8 Mpa at T-480°C h₁=3349.52 KJ/kg, S1-S2= 6.6610KJ/kg-K At condenser Pressure, P=.00 Mpa hf=173.85hfg=2403.1, Sg-8.2287, SF0.5926 Quality, x is given by S₂ - Sf Sa-Sr x = X= 6.6586 0.5926 8.2287 0.5926 x=0.7943 h2s hf+x*hfg=173.88+0.7943*2403.1=2083.37KJ/kg h₂=2083.37KJ/kg h3=173.85KJ/kg h4s-h3+0 (P1-P2)=173.88+ 1.0084 (8-.008)-181.91 KJ/kg h4=181.91 KJ/kg Condenser Pressure (KPa) 8 10 15 30 50 Wnet qin Wt (KJ/kg) Wp (KJ/kg) gout (KJ/kg) (KJ/kg) (KJ/kg) (KJ/kg) 1266.16 8.06 1258.10 3167.62 1909.52 1240.20 8.07 1232.12 3149.64 1917.52 1191.55 8.10 1183.45 3115.49 1932.04 1103.64 8.15 1095.49 3052.15 1956.66 1034.64 8.19 1026.46 3000.86 1974.41 efficiency (%) 39.72 39.12 37.99 35.89 34.21See Answer**Q2:**3-10. One thousand cfm of air with a temperature of 100 F db and 10 percent relative humidity (RH) at a barometric pressure of 14.7 psia is humidified under adiabatic steady-flow conditions to 40 percent relative humidity with saturated vapor at 14.7 psia. Use the program PSYCH to find: (a) the final temperature of the air, (b) the mass of water vapor added to the air, and (c) the leaving volume flow rate. 80 Chapter 3 Moist Air Properties and Conditioning Processes 3-11. Air is cooled from 80 F db and 67 F wb until it is saturated at 55 F. Using Chart 1a, find (a) the moisture removed per pound of dry air, (b) the heat removed to condense the moisture, (c) the sensible heat removed, and (d) the total amount of heat removed.See Answer**Q3:**Thermodynamics II Term Project Design a power plant that works on a combined cycle with the following characteristics: The highest temperature in the cycle is 1200 K. The highest Pressure in the cycle is 15 MPa. The condenser pressure is 50 kPa. You may use up to four feed-water heaters. You may use up to three steam turbines. You may use any number of compressors, pumps, valves and any other components. Your task is to maximize the thermal efficiency of the cycle.See Answer

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