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# HomeworkAnswers4 - 10.21(a 0.1444 kg/s(b-55.4 kW power...

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ME 200 Thermodynamics I Spring 2011 Answers to Assigned Homework Problems Lectures 31 through 40 6.123 (a) 1828°R; (b) 1938°R 6.127 (a) -26.43 C; (b) 8.77 kg SP31 (a) w A = 839.14 kJ/kg; w B = 729.75 kJ/kg 6.132 (a) 94.7%; (b) +0.465 kW/K 6.136 -207.9 kW; 0.0698 kW/K SP32 (a) -34.5 kW; (b) -30.1 kW 6.153 (a) -7.161 kW; (b) -0.16 kW 6.163 944.3 kg/s SP33 5.11 kJ/kg 8.6 (a) 1.12 × 10 5 kW; (b) 2.87 × 10 5 kW, heat input; (c) 38.8%; (d) 2335 kg/s 8.7 (a) 49.3%; (b) 0.513; (c) 55120 kW; (d) -56540 kW, heat loss SP34 25 m 2 /kW 8.22 (a) 8.16 × 10 4 kW; (b) 32.2%; (c) -7643 kW, heat loss; (d) 1963 kg/s 8.29 (a) -+3913.9 kJ/kg, heat input; (b) 41.9%; (c) -2274.1 kJ/kg, heat loss SP35 (a) same, increase, increase, increase, increase 10.8 (a) -4.65 kW, power input; (b) 4.9 tons; (c) 3.7

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Unformatted text preview: 10.21 (a) 0.1444 kg/s; (b) -55.4 kW, power input; (c) 2.71; (d) 88.8% SP36 W turb. = 0.155 kW, Q evap. = 13.1 kW, COP = 10.5 10.34 (a) -2.13 kW, power input; (b) 7.055; (c) 19.53 10.42 (a) 1257 ft 3 /min; (b) 79.7%; (c) -2.86 HP, power input; (d) 6.92; (e) 8.6 gal/min SP37 W comp. = -2.45 hp, W elec. saved = 21.1 hp 9.11 (a) -0.223 kJ, heat loss; (b) +0.254 kJ; (c) 53.3%; (d) 142.2 kPa 9.14 +0.217 Btu; 36.8 HP SP38 q in = 248 Btu/lb ; η th = 0.476 ; MEP = 49.0 psia 9.20 (a) 23.19; (b) 2.19; (c) 59.7%; (d) 975 kPa 9.31 (a) 0.03 kg; (b) +18.16 kJ, heat input; -7.54 kJ, heat loss; (c) +10.62 kJ; 58.5% SP39 9.41 (a) 48.2%; (b) 0.4137; (c) 2385.9 kW 9.49 (a) 25.4%; (b) 0.6464; (c) 1151.1 kW; (d) Do not solve SP40 (a) 661 kW; (b) 0.62; (c) 0.32...
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