板式換熱器選型

1、板式換熱器選型計算書目錄1、目錄12、選型公式23、選型實例一（水一水）34、選型實例一（汽一水）45、選型實例三（油一水）E'”“"一-E，”FE“”FE“”，56、選型實例四（麥芽汁一水）67、附表一（空調(diào)采暖，水水）7&附表二（空調(diào)采暖，汽一水）89、附表三（衛(wèi)生熱水，水一水）910、附表四（衛(wèi)生熱水，汽一水）e"“，1011、附表五（散熱片采暖，水水）1112、附表六（散熱片采暖，汽水）12板式換熱器選型計算1、選型公式a、熱負荷計算公式：Q=cm程其中：Q=熱負荷（kcal/h）、c介質(zhì)比熱（Kcal/KgC）、m介質(zhì)質(zhì)量流量（Kg/h）、At介質(zhì)

2、進出口溫差（C）（注：m、At、c為同側(cè)參數(shù)）水的比熱為1.0Kcal/Kg.Cb、換熱面積計算公式：A=Q/K.Atm其中：A換熱面積（m2）、K傳熱系數(shù)（Kcal/m2.C）Am對數(shù)平均溫差介質(zhì)水一水蒸汽-水蒸汽-油冷水一油油一油空氣一油K25004500130020007009005007001753502558K值表:注：K值按經(jīng)驗取值（流速越大，K值越大。水側(cè)板間流速一般在0.20.8m/s時可按上表取值，汽側(cè)板間流速一般在15m/s以內(nèi)時可按上表取值）Atm=Amax-AminLnAtmaxAtminAmax為（T1-T2'）和（T1'T2'T1'A

3、tmin為（T1-T2'）和（T1'-T2）之較小值c、板間流速計算公式:V=qT2Asn33其中V板間流速（m/s）、q-體積流量（注意單位轉(zhuǎn)換，m/h-m/s）、As單通道截面積（具體見下表）、n流道數(shù)2、板式換熱器整機技術(shù)參數(shù)表:設(shè)備參數(shù)“號BR0.05BR0.1BR0.25BR0.3BR0.35BR0.5BR0.7BR1.0BR1.35最高使用壓力Mpa2.5使用溫度范圍'C-19200裝機最大換熱面積515306580120220350500最大流量m3/h1025401201502504306501730標準接口法蘭DN2540658010012515025

4、0350單板換熱面積m20.0510.1090.2380.3080.3750.550.711.001.352平均流道截面積m0.0004940.0006560.000980.001180.001190.0016910.0020350.02860.004設(shè)備參考質(zhì)量Kg872904858709801800280037007200型號說明：表示波形為人字形、單板公稱換熱面積0.3m2、設(shè)計壓力I.OMpa、墊片材質(zhì)EPDM、總換熱面積為9m2板式換熱器注：以上選型計算方法適用于本公司生產(chǎn)的板式換熱器。選型實例一（衛(wèi)生熱水用：水-水）1、使用參數(shù)一次水進水溫度：90C一次水流量：350m/h一次水出

5、水溫度：70C二次水進水溫度：10C二次水流量：320m/h二次水出水溫度：60C2、熱負荷Q=cm=1X50X1000X(90-70)3、初選換熱面積平均溫差Atm=(70-10)-(90-60)/In(70-10)/(90-60)=43.3C傳熱系數(shù)取K=3000KcaI/hT面積A=Q/K.Atm=1,000,000/3000X43.32=7.7m取設(shè)計余量17%(如介質(zhì)比較潔凈不易結(jié)垢，設(shè)計余量可偏小些。余量一般在10%30%之間)貝UA=9.0m2根據(jù)流量及換熱面積初選用人字型波紋板型。4、流速校核：需用單板面積為0.27m2的板片約33片。初選流道布置方案：1X16/1X162有效

6、換熱面積Ac=0.27X32=8.64m根據(jù)“板式換熱器整機技術(shù)參數(shù)表”選BR03型其主要幾何參數(shù)：單板換熱面積：0.27m2單通道截面積：0.0012m2角孔直徑：DN80一次水側(cè)流速V1=q1/As.n1=50/3600X0.0012X16=0.72m/s二次水側(cè)流速V2=q2/Asm2=20/3600X0.0012X16=0.29m/s流速范圍在0.20.8m/s之間，符合設(shè)計要求。所以，選型;流程組合為1X16/1X16。注：以上選型計算只適用于本公司生產(chǎn)的板式換熱器。選型實例二（散熱器采暖用：汽-水）1、使用參數(shù)熱源采用0.4Mpa飽和蒸汽（飽和溫度150C）,采暖面積為2萬平方米。

7、散熱器要求供水溫度80T，回水溫度60C。2、熱工計算每平方米按80大卡計算則總熱負荷為160萬大卡。熱水流量為：m=Q/cAt=1600000/1X（80-60）3=80,000Kg/h=80m/h3、初選換熱面積平均溫差Atm=(150-60)-(150-80)/ln(150-60”(150-80)=79.6C傳熱系數(shù)取K=1500Kcal/hC面積A=Q/K.Atm=1,600,000/1500X79.6取設(shè)計余量30%（為了使蒸汽冷凝水溫度更低，余量一般取大些，余量范圍一般在10%30%之間）貝UA=17.4m2根據(jù)流量及換熱面積初選用人字型波紋板型。4、流速校核：需用單板面積為0.2

8、7m2的板片約67片。初選流道布置方案：1X33/1X332有效換熱面積Ac=0.27X66=17.82m根據(jù)“板式換熱器整機技術(shù)參數(shù)表”選BR03型其主要幾何參數(shù)：單板換熱面積：0.27m2單通道截面積As：0.0012m2角孔直徑：DN80蒸汽側(cè)流速Vi=qi/As.ni=2667/3600X2.548X0.0012X33=7.34m/s（蒸汽熱值按60萬大卡每噸計算，0.4Mpa飽和蒸汽密度查表為2.548Kg/m3。）熱水側(cè)流速V2=q2/As.n2=80/3600X0.0012X33=0.56m/s水側(cè)流速范圍在0.20.8m/s之間，汽側(cè)流速在15m/s以內(nèi)，符合設(shè)計要求）所以，確

9、定選型;流程組合為1X33/1X33）注：以上選型計算只適用于本公司生產(chǎn)的板式換熱器）選型實例三（冷卻潤滑油用：油-水）潤滑油進口溫度：60C流量：50m3/h潤滑油出口溫度：40C冷卻水進口溫度：32C冷卻水出口溫度：37C2、熱負荷Q=cmAt=2.043X50X864X(60-40)=1765152KJ/h=422184Kcal/h(查表：4.181為KJ與Kcal的換算率，潤滑油在60C時比熱為2.043KJ/(Kg.K,3密度為864Kg/m)3冷卻水流量m=Q/CAt=422184/1X(37-32)=84437Kg/h=84.5m/h3、選換熱面積平均溫差Atm=(60-37)-

10、(40-32)/ln(60-37)/(40-32)=14.2C傳熱系數(shù)取K=600Kcal/hC面積A=Q/K.Atm=422,285/600X14.2=49.6m2取設(shè)計余量17%(如介質(zhì)比較潔凈不易結(jié)垢，設(shè)計余量可偏小些。余量一般在10%30%之間)則A=58.0m2根據(jù)流量及換熱面積初選用人字型波紋板型。4、流速校核:需用單板面積為0.52m2的板片約111片。初選流道布置方案：1X55/1X55有效換熱面積Ac=0.52X110=57.2m2根據(jù)“板式換熱器整機技術(shù)參數(shù)表”選BR05型其主要幾何參數(shù)：單板換熱面積：0.52m22單通道截面積As：0.00162m角孔直徑：DN125潤滑

11、油側(cè)流速V1=qAs.n1=50/3600X0.00162X55=0.16m/s冷卻水側(cè)流速V2=q2/As.n2=84.5/3600X0.00162X55=0.26m/s由于潤滑油側(cè)及冷卻水流速較低(0.16m/sv0.2m/s),流程組合重新排為:1X27+1X28/1X27+1X28則潤滑油側(cè)重新計算流速為0.3m/s，冷卻水側(cè)重新計算流速為0.52m/s。流速范圍在0.20.8m/s之間，符合設(shè)計要求。所以，選型;流程組合為1X27+1X28/1X27+1X28。注：以上選型計算只適用于本公司生產(chǎn)的板式換熱器。選型實例四(冷卻麥芽汁用：麥芽汁-水)1、使用參數(shù)麥芽汁進口溫度：98C流量

12、：32t/h麥芽汁出口溫度：8.0C冷凍水進口溫度：2.0C冷凍水出口溫度：80C2、熱負荷Q=cmAt=4.014.18X32X1000x(98-8)=2,762,870Kcal/h(查表：4.18為水的比熱容，麥芽汁在50C時比熱為4.01KJ/(Kg.K)冷卻水流量m=Q/CAt=2762870/1X(80-2)=35421Kg/h=35.5m/h3、初選換熱面積平均溫差Atm=(98-80)-(8-2)/ln(98-80)/(8-2)=10.9C傳熱系數(shù)取K=3000Kcal/hK面積A=Q/K.Atm=2762870/3000X10.9=84.5m2取設(shè)計余量17%(如介質(zhì)比較潔凈不

13、易結(jié)垢，設(shè)計余量可偏小些。余量一般在10%30%之間)則A=98.8m2根據(jù)流量及換熱面積初選用人字型波紋板型。4、流速校核：需用單板面積為0.52m2的板片約193片。初選流道布置方案：4X24/4X242有效換熱面積Ac=0.52X192=99.8m根據(jù)“板式換熱器整機技術(shù)參數(shù)表”選BR05型其主要幾何參數(shù)：單板換熱面積：0.52m2單通道截面積As：0.00162m2角孔直徑：DN125麥芽汁側(cè)流速Vi=qi/As.ni=32/3600X0.00162X24=0.23m/s冷凍水側(cè)流速V2=q2/As.n2=35.5/3600X0.00162X24=0.25m/s流速范圍在0.20.8m

14、/s之間，符合設(shè)計要求。所以，選型;流程組合為4X24/4X24。注：以上選型計算只適用于本公司生產(chǎn)的板式換熱器。附表一、（風機盤管空調(diào)采暖用1:熱側(cè)90C70C；冷側(cè)50C60C）板片規(guī)格熱負荷換熱面積熱側(cè)流里冷側(cè)流量接口法蘭尺寸4(X10KCal/h)(m2)3(m/h)3(m/h)DN(mm)BR0.1101.65.010.040BR0.1203.310.020.040BR0.2304.915.030.050BR0.2406.520.040.050BR0.3508.125.050.080BR0.3609.830.060.080BR0.37011.435.070.080BR0.38013.

15、040.080.080BR0.39014.645.090.080BR0.310016.350.0100.080BR0.3P11017.955.0110.080/125BR0.3P12019.560.0120.080/125BR0.3P13021.165.0130.080/125BR0.3P14022.870.0140.080/125BR0.3P15024.475.0150.080/125BR0.3P16026.080.0160.080/150BR0.3P17027.685.0170.080/150BR0.3P18029.390.0180.080/150BR0.3P19030.995.0190.

16、080/150BR0.3P20032.5100.0200.080/150BR0.5P22035.8110.0220.0125/150BR0.5P25040.7125.0250.0125/150BR0.5P28045.5140.0280.0125/200BR0.5P30048.8150.0300.0125/200BR0.5P32052.0160.0320.0125/200BR0.5P35056.9175.0350.0125/200BR0.5P38061.8190.0380.0125/200BR0.5P40065.0200.0400.0125/200說明：板片材質(zhì)采用進口不銹鋼SUS304,墊片材

17、質(zhì)采用三元乙丙橡膠（EPDM）,設(shè)計壓力1.0Mpa，設(shè)計溫度95C,100萬大卡以上冷側(cè)加裝旁通（P）。如需了解更詳細資料請來電，謝謝！注：以上表格參數(shù)只適用于本公司生產(chǎn)的板式換熱器。附表二、（風機盤管采暖用2:熱側(cè)為0.20.4Mpa飽和蒸汽；冷側(cè)50C60C）板片規(guī)格熱負荷換熱面積蒸汽耗量冷側(cè)流量接口法蘭尺寸4(X10KCal/h)2(m)(Kg/h)3(m/h)DN(mm)BR0.1101.1151.010.040BR0.1202.2302.020.040BR0.2303.4453.030.050BR0.2404.5604.040.050BR0.3505.6755.050.080BR0

18、.3606.7906.060.080BR0.3707.81057.070.080BR0.3808.91208.080.080BR0.39010.11359.090.080BR0.310011.21510.0100.080BR0.3P11012.31661.0110.080/125BR0.3P12013.41812.0120.080/125BR0.3P13014.51963.0130.080/125BR0.3P14015.72114.0140.080/125BR0.515016.82265.0150.0125BR0.516017.92416.0160.0125BR0.517019.02567.0

19、170.0125BR0.518020.12718.0180.0125BR0.519021.32869.0190.0125BR0.520022.43020.0200.0125BR0.5P22024.63322.0220.0125/200BR0.5P25028.03775.0250.0125/200BR0.5P28031.34228.0280.0125/200BR0.5P30033.64530.0300.0125/200BR0.5P32035.84832.0320.0125/200BR0.5P35039.15285.0350.0125/200BR0.5P38042.55738.0380.0125/

20、200BR0.5P40044.76040.0400.0125/200說明：板片材質(zhì)采用進口不銹鋼SUS316L,墊片材質(zhì)采用三元乙丙橡膠（EPDM）,設(shè)計壓力1.0Mpa，設(shè)計溫度160C,100萬大卡以上冷側(cè)加裝旁通（P）。如需了解更詳細資料請來電，謝謝！注：以上表格參數(shù)只適用于本公司生產(chǎn)的板式換熱器。附表三、（衛(wèi)生熱水用1:熱側(cè)90C70C；冷側(cè)10C60C）板片規(guī)格熱負荷換熱面積熱側(cè)流里冷側(cè)流量接口法蘭尺寸4(X10KCal/h)2(m)3(m/h)3(m/h)DN(mm)BR0.05101.05.02.025BR0.05202.010.04.025BR0.1303.015.06.040

21、BR0.1404.020.08.040BR0.1505.025.010.040BR0.2606.030.012.050BR0.2707.035.014.050BR0.2808.040.016.050BR0.3909.045.018.080BR0.310010.050.020.080BR0.311011.055.022.080BR0.312012.060.024.080BR0.313013.065.026.080BR0.314014.070.028.080BR0.315015.075.030.080BR0.316016.080.032.080BR0.317017.085.034.080BR0.3

22、18018.090.036.080BR0.319019.095.038.080BR0.320020.0100.040.080BR0.522022.0110.044.0125BR0.525025.0125.050.0125BR0.528028.0140.056.0125BR0.530030.0150.060.0125BR0.532032.0160.064.0125BR0.535035.0175.070.0125BR0.538038.0190.076.0125BR0.540040.0200.080.0125說明：板片材質(zhì)采用進口不銹鋼SUS304,墊片材質(zhì)采用三元乙丙橡膠（EPDM）,設(shè)計壓力1.

23、0Mpa，設(shè)計溫度95C,如需了解更詳細資料請來電，謝謝!注：以上表格參數(shù)只適用于本公司生產(chǎn)的板式換熱器附表四、（衛(wèi)生熱水用2:熱側(cè)為0.20.4Mpa飽和蒸汽；冷側(cè)10C60C）板片規(guī)格熱負荷換熱面積蒸汽耗量冷側(cè)流量接口法蘭尺寸4(X10KCal/h)(m2)(Kg/h)(m3/h)DN(mm)BR0.05100.8151.02.025BR0.1201.6302.04.040BR0.1302.4453.06.040BR0.1403.2604.08.040BR0.2504.1755.010.050BR0.2604.9906.012.050BR0.2705.71057.014.050BR0.38

24、06.51208.016.080BR0.3907.31359.018.080BR0.31008.11510.020.080BR0.31108.91661.022.080BR0.31209.71812.024.080BR0.313010.51963.026.080BR0.314011.42114.028.080BR0.515012.22265.030.0125BR0.516013.02416.032.0125BR0.517013.82567.034.0125BR0.518014.62718.036.0125BR0.519015.42869.038.0125BR0.520016.23020.040

25、.0125BR0.522017.83322.044.0125BR0.525020.33775.050.0125BR0.528022.74228.056.0125BR0.530024.34530.060.0125BR0.532025.94832.064.0125BR0.535028.45285.070.0125BR0.538030.85738.076.0125BR0.540032.46040.080.0125說明：板片材質(zhì)采用進口不銹鋼SUS316L,墊片材質(zhì)采用三元乙丙橡膠（EPDM）,設(shè)計壓力1.0Mpa，設(shè)計溫度160C,如需了解更詳細資料請來電，謝謝！注：以上表格參數(shù)只適用于本公司生產(chǎn)的

26、板式換熱器。附表五、（散熱片采暖用1:熱側(cè)90C70C；冷側(cè)60C80C）板片規(guī)格熱負荷換熱面積熱側(cè)流里冷側(cè)流量接口法蘭尺寸4(X10KCal/h)(m2)3(m/h)3(m/h)DN(mm)BR0.1104.05.05.040BR0.1208.010.010.040BR0.13012.015.015.040BR0.14016.020.020.040BR0.25020.025.025.050BR0.26024.030.030.050BR0.27028.035.035.050BR0.38032.040.040.080BR0.39036.045.045.080BR0.310040.050.050.

27、080BR0.311044.055.055.080BR0.312048.060.060.080BR0.513052.065.065.0125BR0.514056.070.070.0125BR0.515060.075.075.0125BR0.516064.080.080.0125BR0.517068.085.085.0125BR0.518072.090.090.0125BR0.519076.095.095.0125BR0.520080.0100.0100.0125BR0.522088.0110.0110.0125BR0.7250100.0125.0125.0200BR0.7280112.0140.0140.0200BR0.7300120.0150.0150.0200BR0.7320128.0160.0160.0200BR0.7350140.0175.0175.0200BR0.7380152.0190.0190.0200BR0.7400160.0200.0200.0200說明：板片材質(zhì)采用進口不銹鋼SUS304,墊片材質(zhì)采用三元乙丙橡膠（EPDM）,設(shè)計壓力1.0Mpa，