ANSWERS TO END-OF-CHAPTER PROBLEMS Fundamentals of Heat and Mass Transfer (5 th Edition) Introduction to Heat Transfer (4 th Edition) F.P. Incropera And D.P. DeWitt
CHAPTER 1
1.1 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.21 1.22 1.23 1.25 1.27 1.28 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39 1.40 1.41 1.43 378°C 4312 W, $4.14/d 0.10 W/m⋅K 8400W 19,600 W, 120 W 54 mm 2 16.6 W/m , 35.9 W 375 mm 110.40°C, 110.25°C 1.1°C 2 (a) 9800 W/m 2 2 (a) 1400 W/m ; (b) 18,000 W/m 2 (a) 22.0 W/m ⋅K; (b) 22.12, 0.6 2 2 4570 W/m ⋅K, 65 W/m ⋅K 51.8°C, 3200°C 6.3 m/s 0.35 W, 5.25 W 2.94 W 15 mW 2 6.4 W/m ⋅K 102.5°C 254.7 K 726 W, 547 W (a) 18,400 W; (b) $6450 3.5% (a) 0.223 W; (b) 3.44 W (a) 8.1 W; (b) 0.23 kg/h …exibir mais conteúdo…

) 0.26 yr 1830 W/m 5 mm (b) 1040 W/m, 407 K, 325 K

3.53 3.54 3.55 3.57 3.59 3.60 3.61 3.63 3.64 3.65 3.67 3.68 3.69 3.72 3.73 3.74 3.76 3.78 3.79 3.86 3.88 3.89 3.90 3.91 3.92 3.95 3.96 3.99 3.102 3.103 3.105 3.106 3.107 3.109 3.113 3.115 3.116 3.117 3.119 3.120 3.121

3.122

3.123

0.01 m, 770 W/m, 909 W/m, 55 mm 8670 W (a) 99.8% 0.062 W/m⋅K 5.34 mm (a) 489 W, (b) 120°C 13.5 mm, 91% 2 181 W/m ⋅K (b) 35.5 mW, 44.9 mW 2 3000 W/m (a) 1.69 m 77.9°C 0.157 W 212°C 6 3 (a) 4.0 × 10 W/m , 15.3 W/m⋅K; (c) 835°C, 360°C 2 2 2 (a) 261°C, 210°C, 107 kW/m , 132 kW/m ; (b) 233°C, 470°C, 371°C, 227°C, 95 kW/m , 144 2 kW/m (c) 50°C; (d) 180°C (a) 530°C, 380°C; (b) 328°C, 290°C 2 (b) 60°C, 65°C; (c) 200 W/m ; (d) 55°C 29 A, 3.0 m, 3.2 kW (b) 1458 K (a) 6400 A; (b) 15,240 W; (c) –10,990 W/m, -11,350 W/m, 4250 W/m, 3890 W/m 804 s 8 3 (a) 938 K, 931 K; (b) 3 × 10 W/m (a) 71.8°C, 51.0°C; (b) 192°C (a) 36.6°C; (b) 129.4°C; (c) 337.7°C (a) 5.26°C, 5.14°C 63.7°C, 160 W/m (c) –17.2 W, 23.6 W (b) 164.3°C, 145.1°C (b) 347°C 262 W (b) 160°C 300°C (a) 305°C, (b) 272°C (c) 62.4°C (b) 508 W (c) 0.333, 607°C (a) 420%; (b) 29% 156.5°C, 128.9°C, 107.0°C (a) Case A: 151 W/m, 0.96, 20.1, 0.50 m⋅K/W, 95.6°C Case B: 144 W/m, 0.92, 19.2, 0.52 m⋅K/W, 96.0°C Case D: 450 W/m, 0, 60.0, 0.17 m⋅K/W, 25°C (a) Case A: 151 W/m, 0.96, 20.1, 0.50 m⋅K/W, 95.6°C Case B: 144 W/m, 0.92, 19.2, 0.52 m⋅K/W, 96.0°C Case D: 450 W/m, 0, 60.0, 0.167 m⋅K/W, 25°C -5 2 Rectangular fin: 130 W/m, 0.98, 4.5 × 10 m -5 2 Triangular