Determine the convection heat transfer coefficient, in W/m.K, thermal resistance for convection, in K/W, and the convection heat transfer rate, in W, that are associated with air at atmospheric pressure in cross flow over a cylinder of diameter D = 200 mm and length L=2 m. The cylinder temperature is T, =70C while the air velocity and temperature are V =3 m/s and T.. =20C, respectively. h= Rt,conv acony 11 = i i W/m.K K/W W TABLE A.4 Thermophysical T P Cp -107 (K) (kg/m) (kJ/kg-K) (N-s/m2) Air, M = 28.97 kg/kmol 100 3.5562 150 2.3364 200 1.7458 1.032 1.012 1.007 250 1.3947 1.006 300 1.1614 1.007 350 0.9950 1.009 400 0.8711 1.014 450 0.7740 1.021 500 0.6964 1.030 550 0.6329 1.040 600 0.5804 1.051 650 0.5356 1.063 700 0.4975 1.075 750 0.4643 1.087 Properties of Gases at Atmospheric Pressure V. 106 (m/s) 800 0.4354 1.099 850 0.4097 1.110 900 0.3868 1.121 950 0.3666 1.131 1000 0.3482 1.141 1100 0.3166 1.159 1200 0.2902 1.175 1300 0.2679 1.189 1400 0.2488 1.207 1500 0.2322 1.230 1600 0.2177 1.248 1700 0.2049 1.267 1800 0.1935 1.286 1900 0.1833 1.307 2000 0.1741 1.337 2100 0.1658 1.372 2200 0.1582 1.417 2300 0.1513 1.478 2400 0.1448 1.558 71.1 103.4 132.5 159.6 184.6 208.2 230.1 250.7 270.1 288.4 305.8 322.5 338.8 354.6 369.8 384.3 398.1 411.3 424.4 449.0 473.0 496.0 530 557 584 611 637 663 689 715 740 766 792 2.00 4.426 13.8 7.590 18.1 k. 103 (W/m - K) (m/s) 9.34 11.44 22.3 15.89 26.3 20.92 26.41 121.9 141.8 162.9 185.1 213 240 268 30.0 33.8 32.39 37.3 38.79 40.7 45-57 43.9 52.69 46.9 60.21 49.7 68.10 52.4 76.37 54.9 84.93 57-3 93.80 59.6 102.9 62.0 112.2 64.3 66.7 71.5 76.3 82 298 329 362 396 431 468 506 547 91 100 106 113 120 128 137 147 160 a-106 Pr 175 196 2.54 0.786 5.84 0.758 10.3 0.737 15.9 0.720 22.5 0.707 29.9 0.700 38.3 0.690 0.686 47.2 56.7 0.684 66.7 0.683 76.9 0.685 87.3 0.690 98.0 0.695 109 0.702 120 0.709 131 0.716 143 0.720 155 0.723 168 0.726 195 0.728 224 0.728 257 0.719 303 0.703 350 0.685 390 0.688 435 482 0.685 0.683 534 0.677 589 0.672 646 0.667 0.655 0.647 0.630 714 783 869