Last Updated: April 18, 2002
Chap 2. 21
(90 mm), 22 (515.3 kPa),
43 (247 lbf), 48
(24.02 psia)
Chap 3. 7 (piston against stops, P2 =133 kPa), 35 (ALSO USE COMPRESSIBILITY FACTOR) (ideal gas: 10.9% too low, compressible: 0.19% too high), 40 (P = 797 kPa) , 51 (x2 = 0.104), 68, 71
Chap 4. 7 (piston at stops, W = 0.15 kJ), 23 (Tfinal = 770K, W = 331 kJ) , 32 (W = -20.1 kJ/kg) , 69 (W = 44.4 BTU)
Chap 5. 17 (465 kJ), 20 (x1 = 0.273, Q = 759 kJ) , 32 (Q = -2068 kJ), 69 (W12 = 172.2 kJ/kg, Q12 = 670.5 kJ/kg, Q23 = -498.3 kJ/kg) , 107 (Q = -77.6 BTU), 128 (Q = 1962 BTU)
Chap 6. 22 (T = 23C, P = 216 kPa), 29 (W = 91.56 MW) , 37 (Hint: You can get a good estimate of the exit mass flow by ignoring the kinetic energy term. An improved mass flow value is then found using the first estimate for m2 in the kinetic energy term. The "exact" value is m2 = 0.0179 kg/s) , 46 (123,000 kg/h) , 91 (Turbine = 33,040 hp; condenser = -192 MM BTU/h), 97 (T = 174F)
Chap 7. 9 (efficiency = 0.42; max power production = 0.698 MW), 15 (minimum power = 2.56 kW), 20 (Use the coefficient of performance "beta prime" on p. 195. Note the heat transferred to the house is that at the low temperature, QL, not QH. Minimum outside temperature is 38.4 C), 63 (The system is impossible since the given beta is greater than the maximum possible value.) , 65 (The ratio of power at 68 F to power at 75 F is 0.525 if the outside temperature is 50F.)
Chap 8. 3 (eff = 0.454, W = 638 kJ/kg), 9 (Q = 397.1 kJ, W = 363.8 kJ), 17 (V1 = 0.385 m^3) , 99 (Q = -22,400BTU, delta S tot = 14.2 BTU/R) , 108 (delta S = 0.321 BTU/R)
Chap 9. 4 (w = -22.78 kJ/kg), 10 (T = -14C, P = 93.7 kPa) , 16 (Full-load, w = 989.4 kJ/kg, 80% load, P2 = 511 kPa), 20 (T1 = 138.3C, P1 = 242 kPa) , 82 (Reversible & adiabatic: m3/m1 = 1.881, x5 = 0.9635; 70% efficiency: m3/m1 = 3.84, x5 = 0.9984) , 116 (w1 = 162.1 BTU/lbm, w2 = 114.7 BTU/lbm, overall efficiency = 0.876, entropy generation = 0.04 BTU/lbm R)
Chap 11. 4 (T = 757C, mass flow = 4.83 kg/s), 8 (Turbine = 33.26 MW, pump = 484 kW, water flow at hih T = 147,000 kg/s, efficiency = 0.0266), 14 (steam quality = 0.6924, efficiency = 0.44), 29 (Note: Output from the feedwater heater is saturated liquid at 0.6 MPa; total steam flow = 6.50 kg/s, low pressure pump = 3.16 kW, high pressure pump = 53 kW), 54 (Note: For a perfect regenerator, T3 = T6; Using variable cp: P5 = 378 kPa, mass flow = 0.321 kg/s, efficiency = 0.699) , 67 (Using variable cp: T4 = 1230 K, P4 = 529 kPa, T5 = 830 K, V5 = 956 m/s; results are different for constant cp), 139 (Tmax = 5789R, Pmax = 1033 psi, mep = 187.7 psi)
Chap 12. 40, 73, 64, 94