管壳式换热器设计计算

管壳式换热器设计计算软件,,,,,,,

,参数名称,符号,数据,单位,参数名称,数据,单位

,一、操作/介质参数,,管程,,,壳程,

,低温介质,,液体,,高温介质,液体,

,进口温度,,32.00,℃,进口温度,80.00,℃

,出口温度,,38.00,℃,出口温度,39.00,℃

,流量,,64939.00,Kg/hr,流量,39000.00,Kg/hr

,平均温度,,35.00,℃,,59.50,℃

,比热,,4.18,KJ/kg.C,比热,4.18,KJ/kg.C

,热量,,6944.06,kw,热量,4935.88,kw

,流体主体粘度,,0.80,cP,,0.90,cP

,密度,,1030.00,kg/m3,,1000.00,kg/m3

,热导率K,,0.50,W/(m)(K),,0.50,W/(m)(K)

,近壁面粘度,,0.80,cP,,0.90,cP

,,,,,,,,

,二、传热参数计算,,,,,,

,总传热功率,,5939.97,kw,,,

,实际总传热系数,,1541.24,W/(m)(K),污垢损失传热,1158.38,W/(m)(K)

,计算总传热系数(无污垢),,382.86,W/(m)(K),,,

,对数平均温差(LMTD),,16.70,℃,,,

,,,,,,,,

,三、对数平均温差计算,,,,,16.70,℃

,对数平均温差(LMTD),12.21,9.84,℃,预定,9.84,℃

,换热器型式,,2管程1壳程,,修正后对数平均温差,16.70,℃

,P,,49.00,,M,41.44,

,,,,,,,,

,四、总传热系数计算,,,,,382.86,W/(m2)/K

,1/U,,0.00,,,,

,,,,,,,,

,五、列管换热器结构参数,,,,,,

,参数名称,符号,数据,单位,工况选择,,

,外壳直径,Ds,0.50,m,流向形式,,2.00

,列管数,nt,500.00,根,,,

,列管外径,Do,0.03,m,换热器型式,,2.00

,列管内径,Di,0.02,m,,,

,列管长度,L,5.88,m,高温流体走管内,Y,

,管间距,s,0.03,m,,,

,列管排列方式,,1.00,,交错排列,并流,

,挡板间距,B,0.28,m,直线排列,逆流,

,列管材质及导热系数,kt,17.00,W/(m)(K),,单管程单壳程,

,计算换热面积,,929.07,m2,,双管程单壳程,

,设计换热面积,,230.79,m2,换热裕度%,698.28,

,,,,,,,,

,六、校核计算,,,,,,

,,,管程,,,壳程,

,流通面积,,0.17,m2,流通面积,0.03,m2

,质量流量,,103.98,kg/s/(m2),质量流量,353.74,kg/s/(m2)

,雷诺数,,2599.45,/,雷诺数,9826.15,/

,"hi/(Cp.G)(Re>8,000)",,0.00,/,Re>200Khi/(Cp.G),0.00,/

,"hi/(Cp.G)(Re<2,100)",,0.00,/,Re=300~200Khi/(Cp.G),0.00,/

,"hi/(Cp.G)Re=2,100-8,000",,0.00,/,Re<300hi/(Cp.G),0.00,/

,预定雷诺数,,382.85,W/(m2)/K,预定雷诺数,3668.40,W/(m2)/K

,,,,,校正因子F1,0.73,/

,管壁传热系数,,,,校正因子Fr,1.00,/

,管壁传热系数,,6800.00,W/(m2)/K,修正hi,2664.39,W/(m2)/K

,,,,,,m,a

,,,,,,0.30,0.17

,,,,,,0.37,0.27

,,,,,,0.64,1.3