螺旋盘管换热器计算2

计算壳程传热系数ho,,,,,,,,,,,,,,,,,,,,

,"盘管所需

长度公式",,,,,,,"环形区内可供流

体流动的空间公式",,,,,,,"盘形管的壳

程当量直径公式",,,,,

,"盘管所需

长度计算",r(m),p(m),L/N(m),,,,"环形区内可供流

体流动的空间计算",C(m),B(m),p(m),do(m),,,"盘形管的壳

程当量直径计算",,do(m),L/N(m),De(m),

,计算结果,0.0963,0.00945,0.605,,,,计算结果,0.2052,0.18,0.00945,0.0063,0.0001,,计算结果,0.0001,0.0063,0.605,0.0178,

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,"流体的质

量流速公式",,,,,,,雷诺数公式,,,,,,,普兰德数公式,,,,,

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,"流体的质

量流速计算",C(m),B(m),do(m),M(Kg/h),,,雷诺数计算,De(m),,μ（Kg/m.h）,,,,普兰德数计算,,μ（Kg/m.h）,,,Npr

,计算结果,0.2052,0.18,0.0063,12000,3147999,,计算结果,0.0178,3147999,3.6,15542,,,计算结果,1,3.60,0.516,,6.98

,"传热系数

h0公式",,,,,,,,,,,,,,,,,,,

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,"传热系数

h0计算",,,De(m),,,,,,,,,,,,,,,,

,计算结果,0.516,,0.0178,15542,6.98,4034,,,,,,,,,,,,,

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计算盘管内的传热系数hi0,,,,,,,,,,,,,,,,,,,,

,"管内雷诺

数公式",,,,,,,,,,,,,,,,,,,

,"管内雷诺

数计算",D(m),,μ（Kg/m.h）,M(Kg/h),,,u(m/h),,,,,,,,,,,,

,计算结果,0.0043,977.8,1.476,420,0.430,0.000014522,29578.2,84257,,,,,,,,,,,

,"盘形管传

热系数公式",,,,,,,,,,,,以盘管外径为基础的传热系数公式,,,,,,,

,"盘形管传

热系数计算",,,,D(m),μ（Kg/m.h）,,Npr,,DH(m),,,以盘管外径为基础的传热系数计算,D(m),do(m),,,,,

,计算结果,200,0.576,,0.0043,1.476,0.999,2.560,36649,0.1926,39513,,计算结果,0.0043,0.0063,26969,,,,

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计算总传热系数,,,,,,,,,,,,,,,,,,,,

,总传热系数计算公式,,,,,,,,,,,,,,,,,,,

,总传热系数计算,,,,,,x(m),1/U,,,,,,,,,,,,

,计算结果,4034,26969,14,0.00015,0.00015,0.001,0.000656408,1523,,,,,,,,,,,

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确定传热面积,,,,,,,,,,,,,,,,,,,,

,"对数平均

温差公式",,,,,,,,,,,,,,,,,,,

,"对数平均

温差计算",管入T1（°C）,管出T2（°C）,壳入t1（°C）,壳出t2（°C）,,,Q(kcal/h)=M*Cp*(管入-管出),,,,,,,,,,,,

,计算结果,100,50,20,21.75,49.7,49.2,20979,,0.280,,,,,,,,,,

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盘管所需圈数,,,,,,,,,,,,,,,,,,,,

,盘管所需圈数公式,,