板式换热器选型,板式换热器选型计算实例
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('板式换热器选型板式换热器选型计算书目录1、目录2、选型公式3、选型实例一(水-水)4、选型实例二(汽-水)5、选型实例三(油-水)6、选型实例四(麦芽汁-水)7、附表一(空调采暖,水-水)8、附表二(空调采暖,汽-水)9、附表三(卫生热水,水-水)10、附表四(卫生热水,汽-水)11、附表五(散热片采暖,水-水)12、附表六(散热片采暖,汽-水)板式换热器选型计算1、选型公式a、热负荷计算公式:Q=cmΔt其中:Q=热负荷(kcal/h)、c—介质比热(Kcal/Kg.℃)、m—介质质量流量(Kg/h)、Δt—介质进出口温差℃()(注:m、Δt、c※为同侧参数)水的比热为1.0XXX℃b、换热面积计较公式:A=Q/K.Δtm其中:A—换热面积(m2)、K—传热系数(Kcal/m2.℃)Δtm—对数平均温差K值表:蒸汽--—油介质水水蒸汽-——水冷水油油油2500~~~~~350K间流速普通在15m/s之内时可按上表取值)—空气油25~58注:K值按经验取值(流速越大,K值越大。水侧板间流速一般在0.2~0.8m/s时可按上表取值,汽侧板Δtm=Δtmax-ΔtminT1ΔtmaxLnΔtXXXΔtmax为(T1-T2’)和(T1’-T2)之较大值ΔtXXX为(T1-T2’)和(T1’-T2)之较小值c、板间流速计较公式:qV=ASXXX3T2’T1’T23其中V—板间流速(m/s)、q----体积流量(注意单位转换,m/h–m/s)、AS—单通道截面积(详细见下表)、n—流道数2、板式换热器整机手艺参数表:型设备参数号BR0.05BR0.1BR0.25BR0.3BR0.352.5-19~200BR0.5BR0.7BR1.0BR1.35最高利用压力Mpa℃利用温度规模装机最大换热面积最大流量m/h尺度接口法兰DN单板换热面积m223510250.0510.871525400.1090.2903040650.2380.48565120800.308801501000.3751202501250.552204301500.710.28003506502501.000.0286370050017303501.350.0047200平均流道截面积m0...装备参考质量Kg型号说明:BR0.3-1.0-9-E表示波形为人字形、单板公称换热面积0.3m2、设计压力1.0Mpa、垫片材质EPDM、总换热面积为9m2板式换热器。注:以上选型计算方法适用于本公司生产的板式换热器。选型实例一(卫生热水用:水-水)1、使用参数一次水进水温度:90℃一次水流量:50m3/h一次水出水温度:70℃二次水进水温度:10℃二次水流量:20m3/h二次水出水温度:60℃2、热负荷Q=cmΔt=1×50×1000×(90-70)=1,000,000Kcal/h3、初选换热面积均匀温差Δtm=(70-10)-(90-60)/ln(70-10)/(90-60)=43.3℃传热系数取K=3000Kcal/h·℃面积A=Q/K.Δtm=7.7m2取设计余量17%(如介质比较洁净不易结垢,设计余量可偏小些。余量一般在10%—30%之间)则A=9.0m2按照流量及换热面积初选用BR0.3-1.0-9-E人字型波纹板型。4、流速校核:需用单板面积为0.27m2的板片约33片。有用换热面积AC=0.27×32=8.64m2“”按照板式换热器整机手艺参数表选BR03型其主要几何参数:单板换热面积:0.27m2单通道截面积:0.0012?m2角孔直径:DN80一次水侧流速V1=q1/As.n1二次水侧流速V2=q2/As.n2流速范围在0.2~0.8m/s之间,符合设计要求。注:以上选型计算只适用于本公司生产的板式换热器。选型实例二(散热器采暖用:汽-水)1、利用参数热源采用0.4Mpa饱和蒸汽(饱和温度150℃),采暖面积为2万平方米。散热器要求供水温度80℃,回水温度60℃。2、热工计较每平方米按80大卡计较则总热负荷为160万大卡。热水流量为:m=Q/cΔt=80,000Kg/h=80m3/h3、初选换热面积平均温差Δtm=(150-60)-(150-80)/ln(150-60)/(150-80)=79.6℃传热系数取K=1500Kcal/h·℃面积A=Q/K.Δtm=13.4m2取设计余量30%(为了使蒸汽冷凝水温度更低,余量一般取大些,余量范围一般在10%—30%之间)则A=17.4m2根据流量及换热面积初选用BR0.3-1.0-18-E人字型波纹板型。4、流速校核:需用单板面积为0.27m2的板片约67片。有用换热面积AC=0.27×66=17.82m2“”根据板式换热器整机技术参数表选BR03型其首要多少参数:单板换热面积:0.27m2单通道截面积As:0.0012?m2角孔直径:DN80蒸汽侧流速V1=q1/As.n1(蒸汽热值按60万大卡每吨计算,0.4Mpa饱和蒸汽密度查表为2.548Kg/m3。)热水侧流速V2=q2/As.n2注:以上选型计算只适用于本公司生产的板式换热器。选型实例三(冷却光滑油用:油-水)1、利用参数润滑油进口温度:60℃流量:50m3/h光滑油出口温度:40℃冷却水入口温度:32℃冷却水出口温度:37℃2、热负荷Q=cmΔt=2.043×50×864×(60-40)=KJ/h=XXX(查表:4.181为KJ与Kcal的换算率,光滑油在60℃时比热为2.043KJ/(Kg.K),密度为864Kg/m3)平均温差Δtm=(60-37)-(40-32)/ln(60-37)/(40-32)=14.2℃传热系数取K=600Kcal/h·℃面积A=Q/K.Δtm=49.6m2取设计余量17%(如介质比较洁净不易结垢,设计余量可偏小些。余量一般在10%—30%之间)则A=58.0m2根据流量及换热面积初选用BR0.5-1.0-58-E人字型波纹板型。4、流速校核:需用单板面积为0.52m2的板片约111片。有效换热面积AC=0.52×110=57.2m2“”按照板式换热器整机手艺参数表选BR05型其首要多少参数:单板换热面积:0.52m2单通道截面积As:0.?m2角孔直径:DN125光滑油侧流速V1=q1/As.n1冷却水侧流速V2=q2/As.n2由于润滑油侧及冷却水流速较低(0.16m/s<0.2m/s),流程组合重新排为:1×27+1×28/1×27+1×28则光滑油侧从头计较流速为0.3m/s,冷却水侧从头计较流速为0.52m/s。流速规模在0.2~0.8m/s之间,吻合设想请求。所以,选型BR0.5-1.0-58-E;流程组合为1×27+1×28/1×27+1×28。注:以上选型计算只适用于本公司生产的板式换热器。选型实例四(冷却麦芽汁用:麦芽汁-水)1、使用参数麦芽汁进口温度:98℃流量:32t/h麦芽汁出口温度:8.0℃冷冻水入口温度:2.0℃冷冻水出口温度:80℃2、热负荷Q=cmΔt=4.014.18×32×1000×(98-8)=2,762,870Kcal/h均匀温差Δtm=(98-80)-(8-2)/ln(98-80)/(8-2)=10.9℃传热系数取XXX·K面积A=Q/K.Δtm=84.5m2取设想余量17%(如介质比力干净不容易结垢,设想余量可偏小些。余量普通在10%—30%之间)则A=98.8m2按照流量及换热面积初选用BR0.5-1.0-100-E人字型波纹板型。4、流速校核:需用单板面积为0.52m2的板片约193片。有效换热面积AC=0.52×192=99.8m2“”根据板式换热器整机技术参数表选BR05型其首要多少参数:单板换热面积:0.52m2单通道截面积As:0.?m2角孔直径:DN125麦芽汁侧流速V1=q1/As.n1冷冻水侧流速V2=q2/As.n2流速规模在0.2~0.8m/s之间,吻合设想请求。以是,选型BR0.5-1.0-100-E;流程组合为4×24/4×24。注:以上选型计算只适用于本公司生产的板式换热器。附表一、(风机盘管空调采暖用1:热侧90℃~70℃;冷侧50℃~60℃)板片规格BR0.1BR0.1BR0.2BR0.2BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3PBR0.3PBR0.3PBR0.3PBR0.3PBR0.3PBR0.3PBR0.3PBR0.3PBR0.3PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5P热负荷(×10KCal/h)4换热面积(m)2热侧流量(m/h)3冷侧流量接口法兰尺寸(m/h)3DN(mm)404050508080808080801020304050607080901001101201301401501601701801902002202502803003203503804001.63.34.96.58.19.811.413.014.616.317.919.521.122.824.426.027.629.330.932.535.840.745.548.852.056.961.865.05.010.015.020.025.030.035.040.045.050.055.060.065.070.075.080.085.090.095.0100.0110.0125.0140.0150.0160.0175.0190.0200.010.020.030.040.050.060.070.080.090.0100.0110.0120.0130.0140.0150.0160.0170.0180.0190.0200.0220.0250.0280.0300.0320.0350.0380.0400.0说明:板片材质采用进口不锈钢SUS304,垫片材质采用三元乙丙橡胶(EPDM),设计压力1.0Mpa,设计温度95℃,100万大卡以上冷侧加装旁通(P)。如需了解更详细资料请来电,谢谢!注:以上表格参数只合用于本公司出产的板式换热器。附表二、(风机盘管采暖用2:热侧为0.2~0.4Mpa饱和蒸汽;冷侧50℃~60℃)板片规格BR0.1BR0.1BR0.2BR0.2BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3PBR0.3PBR0.3PBR0.3PBR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5PBR0.5P热负荷(×10KCal/h)4换热面积(m)2蒸汽耗量(Kg/h)151.0302.0453.0604.0755.0906.01057.01208.01359.01510.01661.01812.01963.02114.02265.02416.02567.02718.02869.03020.03322.03775.04228.04530.04832.05285.05738.06040.0冷侧流量接口法兰尺寸(m/h)3DN(mm)404050508080808080801251251251251251251020304050607080901001101201301401501601701801902002202502803003203503804001.12.23.44.55.66.77.88.910.111.212.313.414.515.716.817.919.020.121.322.424.628.031.333.635.839.142.544.710.020.030.040.050.060.070.080.090.0100.0110.0120.0130.0140.0150.0160.0170.0180.0190.0200.0220.0250.0280.0300.0320.0350.0380.0400.0申明:板片材质接纳入口不锈钢SUS316L,垫片材质接纳三元乙丙橡胶(EPDM),设想压力1.0Mpa,设想温度160℃,100万大卡以上冷侧加装旁通(P)。如需相识更详细材料请来电,感谢!注:以上表格参数只适用于本公司生产的板式换热器。附表3、(卫生热水用1:热侧90℃~70℃;冷侧10℃~60℃)板片规格BR0.05BR0.05BR0.1BR0.1BR0.1BR0.2BR0.2BR0.2BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5热负荷(×10KCal/h)4换热面积(m)2热侧流量(m/h)3冷侧流量(m/h)3接口法兰尺寸DN(mm)25254040405050508080808080808080808080801251251251251251251251251020304050607080901001101201301401501601701801902002202502803003203503804001.02.03.04.05.06.07.08.09.010.011.012.013.014.015.016.017.018.019.020.022.025.028.030.032.035.038.040.05.010.015.020.025.030.035.040.045.050.055.060.065.070.075.080.085.090.095.0100.0110.0125.0140.0150.0160.0175.0190.0200.02.04.06.08.010.012.014.016.018.020.022.024.026.028.030.032.034.036.038.040.044.050.056.060.064.070.076.080.0说明:板片材质采用进口不锈钢SUS304,垫片材质采用三元乙丙橡胶(EPDM),设计压力1.0Mpa,设计温度95℃,如需了解更详细资料请来电,谢谢!注:以上表格参数只适用于本公司生产的板式换热器。附表4、(卫生热水用2:热侧为0.2~0.4Mpa饱和蒸汽;冷侧10℃~60℃)板片规格BR0.05BR0.1热负荷(×10KCal/h)4换热面积(m)2蒸汽耗量(Kg/h)151.0302.0冷侧流量接口法兰尺寸(m/h)3DN(mm)254010200.81.62.04.0BR0.1BR0.1BR0.2BR0.2BR0.2BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.3BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5304050607080901001101201301401501601701801902002202502803003203503804002.43.24.14.95.76.57.38.18.99.710.511.412.213.013.814.615.416.217.820.322.724.325.928.430.832.4453.0604.0755.0906.01057.01208.01359.01510.01661.01812.01963.02114.02265.02416.02567.02718.02869.03020.03322.03775.04228.04530.04832.05285.05738.06040.06.08.010.012.014.016.018.020.022.024.026.028.030.032.034.036.038.040.044.050.056.060.064.070.076.080.0404050505080808080808080125125125125125125125125125125125125125125说明:板片材质采用进口不锈钢SUS316L,垫片材质采用三元乙丙橡胶(EPDM),设计压力1.0Mpa,设计温度160℃,如需了解更详细资料请来电,谢谢!注:以上表格参数只适用于本公司生产的板式换热器。附表五、(散热片采暖用1:热侧90℃~70℃;冷侧60℃~80℃)板片规格热负荷换热面积热侧流量冷侧流量接口法兰尺寸BR0.1BR0.1BR0.1BR0.1BR0.2BR0.2(×10KCal/h)4(m)2(m/h)3(m/h)3DN(mm)4040404050501020304050604.08.012.016.020.024.05.010.015.020.025.030.05.010.015.020.025.030.0BR0.2BR0.3BR0.3BR0.3BR0.3BR0.3BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.5BR0.7BR0.7BR0.7BR0.7BR0.7BR0.7BR0.770809010011012013014015016017018019020022025028030032035038040028.032.036.040.044.048.052.056.060.064.068.072.076.080.088.0100.0112.0120.0128.0140.0152.0160.035.040.045.050.055.060.065.070.075.080.085.090.095.0100.0110.0125.0140.0150.0160.0175.0190.0200.035.040.045.050.055.060.065.070.075.080.085.090.095.0100.0110.0125.0140.0150.0160.0175.0190.0200.0508080808080125125125125125125125125125200',)
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