换热器计算书

设计参数热进压缩机状态介质流量 kg/h进口压力 MPa进口温度 ℃出口温度 ℃允许压差 Mpa程数相对湿度一级AIR846910.17101450.00610.8二级AIR846910.263101450.00510.8三级AIR846910.40598450.00411冷冷却水WATER0.432400.520.1013350.8翅片长mm翅片宽mm翅片厚mm翅片开孔直径mm开孔数量单位长度翅片数1/m单元组间间隙mm迎风单元组数（行）列单元组数 （列）换热管外径mm换热管内径mm换热管有效长度mm48孔翅片2482080.319.64840023419164476一级48孔翅片2482080.319.64840023419164476二级36孔翅片2481560.319.63640023519164476三级换热管总数冷侧单程管数迎风高度mm气流长度mm迎风面积m2单位迎风单元占的面积m2/m实际迎风单元占的面积m2最窄流通面积m2流通系数单位单元换热面积m2/m总换热面积m2材料：铜 导热系数 W/(m.k)修正系数（P）修正系数（R）修正系数（F）5765765402882882707487487488388387883.3480483.3480483.3480480.1677440.1677440.1332482.2524664322.2524664321.7892541441.0955815681.0955815681.5587938560.3272299470.3272299470.46558288832.2832.2824.211733.91733.91625.63933933930.115970.904780.115970.904780.12126.6250.90483第 1 页

对数平均温差℃定性温度℃物性参数：干空气：分子量kg/kmol气体常数kJ/(kg.k)定压比热kJ/(kg.k)动力粘度Pa.s导热系数W/(m.K)水蒸气：分子量kg/kmol气体常数kJ/(kg.k)定压比热kJ/(kg.k)粘度Pa.s导热系数W/(m.K)密度kg/m3运动粘度m2/s普朗特数湿空气的物性参数进口温度饱和蒸汽压 Mpa出口温度饱和蒸汽压 Mpa冷却器进口含湿量 kg/kg干空气的相对成分 kg/kg水蒸气的相对成分 kg/kg湿空气气体常数 kJ/(kg.k)湿空气中干空气容积成分湿空气中水蒸气容积成分湿空气的假拟分子量 kg/kmol湿空气的定压比热 kg/(kJ.K)湿空气的导热系数 W/(m.K)湿空气的动力粘度 Pa.s湿空气的密度 kg/m3计算是否有水析出冷却器出口含湿量 kg/kg计算热负荷析出水的热负荷 kW湿空气的热负荷 kW总热负荷 kW冷却水量 kg/h kg/s计算水侧换热系数水侧流速 m/s雷诺数努谢尔数28.0964.0928.0964.0927.2363.233628.9728.9728.970.2869865380.2869865380.2869865381.006641.006641.0062922.03050E-052.03050E-052.02615E-052.92460E-022.92460E-022.91938E-0218.0218.0218.020.4613762490.4613762490.4613762491.9240691.9240691.92225071.05851E-051.05851E-051.05509E-052.21460E-022.21460E-022.20938E-02冷却水18.020.4613762494.1747.12580E-040.6282993.67.71400E-074.7540.0058080.0098550.0299023180.970965870.029034130.2920497910.9880964520.01190354828.467748471.0332767532.91737E-022.01588E-051.7260332760.0098550.0098550.0302501150.9706380860.0293619140.2921069530.9879562170.01204378328.462177651.0335774712.91729E-022.01570E-052.6697524650.0098550.0098550.024028420.9765353970.0234646030.2910785230.9904592850.00954071528.562739391.0277846072.91359E-022.01443E-054.1363648260.0382780260.0242155070.01551338无水析出有水析出有水析出0428.9236703554.62638861361.2548671361.6510381281.4826741361.2548671790.5747081836.109063146757.2329193042.314197951.384440.7658980453.6228650154.986495660.70850.93201.019414696.1455619331.0945521144.1970392.53675432115.2276389123.7953878第 2 页

水侧对流换热系数 W/(m2.k)计算气侧对流换热系数最窄截面质量流速 kg/m2.s当量直径 m雷诺数努谢尔数气侧对流换热系数 W/(m2.k)计算总传热系数空气侧污垢系数 (m2.k)/W水侧污垢系数 (m2.k)/W计算翅片热阻单管单矩形片平均面积m2等面积圆管翅片外径m等面积圆管翅片外半径m等面积圆管翅片根半径m翅片厚度的一半m等面积圆管翅片高度m翅片纵截面积m2形状系数 （mH）等面积圆翅片管翅片效率圆翅片管光滑部分面积翅片热阻 (m2.k)/W单位管子对数平均面积m2/m单位管子内面积m2/m单位管子外面积m2/m单位管子外内面积比单位管子外与对数平均内面积比3633.22421.47290.0021179472256.0106415.03343166207.07852060.00E+008.00E-044524.1254860.51621.472915.09200.0021179470.0030225252256.2028362264.45214115.0342641315.06997145207.083933145.2683080.00E+008.00E-040.00E+008.00E-04总传热系数理论传热面积 m2理论富裕系数阻力计算摩擦因子最窄截面流速m/s阻力Mpa0.0016813620.0016813620.0016813620.03640.03640.03640.01820.01820.01820.00980.00980.00980.000150.000150.000150.008410.008410.008411.261E-061.261E-061.261E-067.049E-017.049E-015.904E-010.8617805940.8617775770.8980075920.0540.0540.0540.0007083080.0007083070.0007174670.0560.0560.0560.0500.0500.0500.6730.6730.67313.38013.38013.38012.06812.06812.06850.17952.07547.478965.6480%1223.9642%1420.4114%0.0354594280.0354586580.03542567312.440587188.0430181143.6486082720.007645780.0049429990.001037476未满足设计要求满足设计要求满足设计要求第 3 页