翅片换热器计算

翅片换热器计算 设计 领导形象设计圆作业设计ao工艺污水处理厂设计附属工程施工组织设计清扫机器人结构设计 参数热冷进压缩机状态一级二级三级冷却水介质AIRAIRAIRWATER流量kg/h846918469184691进口压力MPa0.10130.170.2630.4050.4进口温度℃351011019832出口温度℃45454540允许压差Mpa0.0060.0050.0040.5程数1112相对湿度0.80.80.8148孔翅片48孔翅片36孔翅片翅片长mm248248248翅片宽mm208208156翅片厚mm0.30.30.3翅片开孔直径mm19.619.619.6开孔数量484836单位长度翅片数1/m400400400单元组间间隙mm222迎风单元组数（行）333列单元组数（列）445换热管外径mm191919换热管内径mm161616换热管有效长度mm447644764476一级二级三级换热管总数576576540冷侧单程管数288288270迎风高度mm748748748气流长度mm838838788迎风面积m23.3480483.3480483.348048单位迎风单元占的面积m2/m0.1677440.1677440.133248实际迎风单元占的面积m22.2524664322.2524664321.789254144最窄流通面积m21.0955815681.0955815681.558793856流通系数0.32722994650.32722994650.4655828877单位单元换热面积m2/m32.2832.2824.21总换热面积m21733.91733.91625.6材料：铜导热系数W/(m.k)393393393修正系数（P）0.11590.11590.1212修正系数（R）776.625修正系数（F）0.904780.904780.90483对数平均温差℃28.0928.0927.23定性温度℃64.0964.0963.2336物性参数：干空气：分子量kg/kmol28.9728.9728.97气体常数kJ/(kg.k)0.28698653780.28698653780.2869865378定压比热kJ/(kg.k)1.006641.006641.006292动力粘度Pa.s2.03050E-052.03050E-052.02615E-05导热系数W/(m.K)2.92460E-022.92460E-022.91938E-02水蒸气：冷却水分子量kg/kmol18.0218.0218.0218.02气体常数kJ/(kg.k)0.4613762490.4613762490.4613762490.4613762486定压比热kJ/(kg.k)1.9240691.9240691.92225074.174粘度Pa.s1.05851E-051.05851E-051.05509E-057.12580E-04导热系数W/(m.K)2.21460E-022.21460E-022.20938E-020.6282密度kg/m3993.6运动粘度m2/s7.71400E-07普朗特数4.754湿空气的物性参数进口温度饱和蒸汽压Mpa0.0058080.0098550.009855出口温度饱和蒸汽压Mpa0.0098550.0098550.009855冷却器进口含湿量kg/kg0.02990231770.03025011480.0240284205干空气的相对成分kg/kg0.97096587010.97063808640.9765353969水蒸气的相对成分kg/kg0.02903412990.02936191360.0234646031湿空气气体常数kJ/(kg.k)0.29204979130.29210695340.2910785232湿空气中干空气容积成分0.98809645190.98795621730.9904592853湿空气中水蒸气容积成分0.01190354810.01204378270.0095407147湿空气的假拟分子量kg/kmol28.4677484728.4621776528.56273939湿空气的定压比热kg/(kJ.K)1.0332767531.0335774711.027784607湿空气的导热系数W/(m.K)2.91737E-022.91729E-022.91359E-02湿空气的动力粘度Pa.s2.01588E-052.01570E-052.01443E-05湿空气的密度kg/m31.7260332762.6697524654.136364826计算是否有水析出冷却器出口含湿量kg/kg0.03827802630.0242155070.0155133799无水析出有水析出有水析出计算热负荷析出水的热负荷kW0428.9236703554.6263886湿空气的热负荷kW1361.2548671361.6510381281.482674总热负荷kW1361.2548671790.5747081836.109063冷却水量kg/h146757.2329193042.314197951.3844kg/s40.7658980453.6228650154.98649566计算水侧换热系数水侧流速m/s0.70850.93201.0194雷诺数14696.1455619331.0945521144.19703努谢尔数92.53675432115.2276389123.7953878水侧对流换热系数W/(m2.k)3633.2244524.1254860.516计算气侧对流换热系数最窄截面质量流速kg/m2.s21.472921.472915.0920当量直径m0.00211794670.00211794670.0030225251雷诺数2256.010642256.2028362264.452141努谢尔数15.0334316615.0342641315.06997145气侧对流换热系数W/(m2.k)207.0785206207.083933145.268308计算总传热系数空气侧污垢系数(m2.k)/W0.00E+000.00E+000.00E+00水侧污垢系数(m2.k)/W8.00E-048.00E-048.00E-04计算翅片热阻单管单矩形片平均面积m20.00168136170.00168136170.0016813617等面积圆管翅片外径m0.03640.03640.0364等面积圆管翅片外半径m0.01820.01820.0182等面积圆管翅片根半径m0.00980.00980.0098翅片厚度的一半m0.000150.000150.00015等面积圆管翅片高度m0.008410.008410.00841翅片纵截面积m21.261E-061.261E-061.261E-06形状系数（mH）7.049E-017.049E-015.904E-01等面积圆翅片管翅片效率0.86178059360.86177757740.8980075917圆翅片管光滑部分面积0.0540.0540.054翅片热阻(m2.k)/W0.00070830770.00070830690.0007174674单位管子对数平均面积m2/m0.0560.0560.056单位管子内面积m2/m0.0500.0500.050单位管子外面积m2/m0.6730.6730.673单位管子外内面积比13.38013.38013.380单位管子外与对数平均内面积比12.06812.06812.068总传热系数50.17952.07547.478理论传热面积m2965.641223.961420.41理论富裕系数80%42%14%阻力计算摩擦因子0.03545942790.03545865770.0354256734最窄截面流速m/s12.440587188.0430181143.648608272阻力Mpa0.00764578020.00494299920.0010374756未满足设计要求满足设计要求满足设计要求第&P页热力计算书图号：设计：校对：审核：日期：