第四节冷却设备的选型计算 附表3-4-0(a)氨光滑U恶顶排管和 附变3-4-0(b)氨单层光滑蛇形顶排管的 氨双层光滑蛇形预排管的K[W/m2·K)] K’值[W/(m3·K 冷间空句 计算温度莞△(℃) 冷间空 计算度差4(℃) 温度(C)6 2 15 温度(C)6 81 15 08.148.618.969.199.42 8.609.07!9.429.659.88 47.798.028.268.49」8.72 48.148.498.728.969.19 107.097.447.68|7.91802 107447.798.028.268.4 26.867.217.447.687.91 127.217.567.798028.26 156.636.987.217.447.68 156.98j7.337.567.798.02 186.406.756.987.217.44 186.753.0917.337.567.79 206.286.636.867.097.33 206.636.987.217.447.68 236.166.406.636.867.09 236.516.746.987.217 256.056.286.516.75|6.98 -256.406.636.867.097.3 305.826.166.406.516.75 306.166.516.746.867.09第四节 冷却设备的选型计算