翅片換熱器計算

翅片換熱器計算,,,,,

設(shè)計參數(shù),,,,,

,熱,,,,冷

,進(jìn)壓縮機(jī)狀態(tài),一級,二級,三級,冷卻水

介質(zhì),,AIR,AIR,AIR,WATER

流量kg/h,,84691,84691,84691,

進(jìn)口壓力MPa,0.1013,0.17,0.263,0.405,0.4

進(jìn)口溫度℃,35,101,101,98,32

出口溫度℃,,45,45,45,40

允許壓差Mpa,,0.006,0.005,0.004,0.5

程數(shù),,1,1,1,2

相對濕度,0.8,0.8,0.8,1,

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,,48孔翅片,48孔翅片,36孔翅片,

翅片長mm,,248,248,248,

翅片寬mm,,208,208,156,

翅片厚mm,,0.3,0.3,0.3,

翅片開孔直徑mm,,19.6,19.6,19.6,

開孔數(shù)量,,48,48,36,

單位長度翅片數(shù)1/m,,400,400,400,

單元組間間隙mm,,2,2,2,

迎風(fēng)單元組數(shù)（行）,,3,3,3,

列單元組數(shù)（列）,,4,4,5,

換熱管外徑mm,,19,19,19,

換熱管內(nèi)徑mm,,16,16,16,

換熱管有效長度mm,,4476,4476,4476,

,,一級,二級,三級,

換熱管總數(shù),,576,576,540,

冷側(cè)單程管數(shù),,288,288,270,

迎風(fēng)高度mm,,748,748,748,

氣流長度mm,,838,838,788,

迎風(fēng)面積m2,,3.348048,3.348048,3.348048,

單位迎風(fēng)單元占的面積m2/m,,0.167744,0.167744,0.133248,

實際迎風(fēng)單元占的面積m2,,2.252466432,2.252466432,1.789254144,

最窄流通面積m2,,1.095581568,1.095581568,1.558793856,

流通系數(shù),,0.327229947,0.327229947,0.465582888,

單位單元換熱面積m2/m,,32.28,32.28,24.21,

總換熱面積m2,,1733.9,1733.9,1625.6,

材料：銅導(dǎo)熱系數(shù)W/(m.k),,393,393,393,

修正系數(shù)（P）,,0.1159,0.1159,0.1212,

修正系數(shù)（R）,,7,7,6.625,

修正系數(shù)（F）,,0.90478,0.90478,0.90483,

對數(shù)平均溫差℃,,28.09,28.09,27.23,

定性溫度℃,,64.09,64.09,63.23,36

物性參數(shù)：,,,,,

干空氣：,,,,,

分子量kg/kmol,,28.97,28.97,28.97,

氣體常數(shù)kJ/(kg.k),,0.286986538,0.286986538,0.286986538,

定壓比熱kJ/(kg.k),,1.00664,1.00664,1.006292,

動力粘度Pa.s,,2.03050E-05,2.03050E-05,2.02615E-05,

導(dǎo)熱系數(shù)W/(m.K),,2.92460E-02,2.92460E-02,2.91938E-02,

水蒸氣：,,,,,冷卻水

分子量kg/kmol,,18.02,18.02,18.02,18.02

氣體常數(shù)kJ/(kg.k),,0.461376249,0.461376249,0.461376249,0.461376249

定壓比熱kJ/(kg.k),,1.924069,1.924069,1.9222507,4.174

粘度Pa.s,,1.05851E-05,1.05851E-05,1.05509E-05,7.12580E-04

導(dǎo)熱系數(shù)W/(m.K),,2.21460E-02,2.21460E-02,2.20938E-02,0.6282

密度kg/m3,,,,,993.6

運動粘度m2/s,,,,,7.71400E-07

普朗特數(shù),,,,,4.754

濕空氣的物性參數(shù),,,,,

進(jìn)口溫度飽和蒸汽壓Mpa,,0.005808,0.009855,0.009855,

出口溫度飽和蒸汽壓Mpa,,0.009855,0.009855,0.009855,

冷卻器進(jìn)口含濕量kg/kg,,0.029902318,0.030250115,0.02402842,

干空氣的相對成分kg/kg,,0.97096587,0.970638086,0.976535397,

水蒸氣的相對成分kg/kg,,0.02903413,0.029361914,0.023464603,

濕空氣氣體常數(shù)kJ/(kg.k),,0.292049791,0.292106953,0.291078523,

濕空氣中干空氣容積成分,,0.988096452,0.987956217,0.990459285,

濕空氣中水蒸氣容積成分,,0.011903548,0.012043783,0.009540715,

濕空氣的假擬分子量kg/kmol,,28.46774847,28.46217765,28.56273939,

濕空氣的定壓比熱kg/(kJ.K),,1.033276753,1.033577471,1.027784607,

濕空氣的導(dǎo)熱系數(shù)W/(m.K),,2.91737E-02,2.91729E-02,2.91359E-02,

濕空氣的動力粘度Pa.s,,2.01588E-05,2.01570E-05,2.01443E-05,

濕空氣的密度kg/m3,,1.726033276,2.669752465,4.136364826,

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計算是否有水析出,,,,,

冷卻器出口含濕量kg/kg,,0.038278026,0.024215507,0.01551338,

,,無水析出,有水析出,有水析出,

計算熱負(fù)荷,,,,,

析出水的熱負(fù)荷kW,,0,428.9236703,554.6263886,

濕空氣的熱負(fù)荷kW,,1361.254867,1361.651038,1281.482674,

總熱負(fù)荷kW,,1361.254867,1790.574708,1836.109063,

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冷卻水量kg/h,,146757.2329,193042.314,197951.3844,

kg/s,,40.76589804,53.62286501,54.98649566,

計算水側(cè)換熱系數(shù),,,,,

水側(cè)流速m/s,,0.7085,0.9320,1.0194,

雷諾數(shù),,14696.14556,19331.09455,21144.19703,

努謝爾數(shù),,92.53675432,115.2276389,123.7953878,

水側(cè)對流換熱系數(shù)W/(m2.k),,3633.224,4524.125,4860.516,

計算氣側(cè)對流換熱系數(shù),,,,,

最窄截面質(zhì)量流速kg/m2.s,,21.4729,21.4729,15.0920,

當(dāng)量直徑m,,0.002117947,0.002117947,0.003022525,

雷諾數(shù),,2256.01064,2256.202836,2264.452141,

努謝爾數(shù),,15.03343166,15.03426413,15.06997145,

氣側(cè)對流換熱系數(shù)W/(m2.k),,207.0785206,207.083933,145.268308,

計算總傳熱系數(shù),,,,,

空氣側(cè)污垢系數(shù)(m2.k)/W,,0.00E+00,0.00E+00,0.00E+00,

水側(cè)污垢系數(shù)(m2.k)/W,,8.00E-04,8.00E-04,8.00E-04,

計算翅片熱阻,,,,,

單管單矩形片平均面積m2,,0.001681362,0.001681362,0.001681362,

等面積圓管翅片外徑m,,0.0364,0.0364,0.0364,

等面積圓管翅片外半徑m,,0.0182,0.0182,0.0182,

等面積圓管翅片根半徑m,,0.0098,0.0098,0.0098,

翅片厚度的一半m,,0.00015,0.00015,0.00015,

等面積圓管翅片高度m,,0.00841,0.00841,0.00841,

翅片縱截面積m2,,1.261E-06,1.261E-06,1.261E-06,

形狀系數(shù)（mH）,,7.049E-01,7.049E-01,5.904E-01,

等面積圓翅片管翅片效率,,0.861780594,0.861777577,0.898007592,

圓翅片管光滑部分面積,,0.054,0.054,0.054,

翅片熱阻(m2.k)/W,,0.000708308,0.000708307,0.000717467,

單位管子對數(shù)平均面積m2/m,,0.056,0.056,0.056,

單位管子內(nèi)面積m2/m,,0.050,0.050,0.050,

單位管子外面積m2/m,,0.673,0.673,0.673,

單位管子外內(nèi)面積比,,13.380,13.380,13.380,

單位管子外與對數(shù)平均內(nèi)面積比,,12.068,12.068,12.068,

總傳熱系數(shù),,50.179,52.075,47.478,

理論傳熱面積m2,,96