冷却器计算公式

项目,项目,数值,单位,,

油冷却器热交换量,润滑油比热容C(常压下)32＃,0.51,kcal/(kg.℃),46＃/,

,润滑油密度ρ(常压下),900,kg/m3,0.7MPa空气密度,

,润滑油流量Q,99,l／ｍｉｎ,,

,进油温度T1,85,℃,,

,出油温度T2,57.6,℃,"0度,标准气压下空气密度",1.293

,油冷却器热交换量P,74705.004,kcal/h,"20度,0.7气压下空气密度",2.293

,油冷却器热交换量P,86.88648988,kw,,

油冷却器换热面积A,油冷传热系数K,160,kcal/(m2.h.℃),,

,冷却风进口温度T3(环境温度),35,℃,,

,冷却风出口温度T4,45,℃,,

,油和冷却风之间的平均温差△ｔ,30.47661496,℃,,

,油冷却器换热面积A,15.32014876,m2,,

气冷却器热交换量,"空气比热容C(标准大气压下,20℃)",0.2427,kcal/(kg.℃),,

,"空气密度ρ(标准大气压下,20℃)",1.18,kg/m3,,

,空气流量Q(进气压力下),24,m3／ｍｉｎ,,

,进气温度T1,85,℃,,

,出气温度T2,45,℃,,

,气冷却器热交换量P,16495.8336,kcal/h,,

,气冷却器热交换量P,19.18566364,kw,,

气冷却器换热面积A,油冷传热系数K,168,kcal/(m2.h.℃),,

,冷却风进口温度T3(环境温度),35,℃,,

,冷却风出口温度T4,45,℃,,

,气和冷却风之间的平均温差△ｔ,21.64042561,℃,,

,气冷却器换热面积A,4.537317679,m2,,

冷却风量的计算,进排风温差,10,℃,,

,空气比热容C,0.24,kcal/(kg.℃),,

,"空气密度ρ(标准大气压下,20℃)",1.18,kg/m3,,

,冷却风量的计算,32203.68559,m3／h,,

风机功率计算,风压,120,Pa,,

,风扇效率,0.5,,,

,风机功率计算,2146.912373,W,,

油侧冷却面积,油侧经济质量流速,200,kg/(m2.s),,

,油侧经济流速,0.222222222,m/s,,

,油侧压力损失,0.04,MPa,,

,油冷高度,125,mm,,

,油侧单根通道截面积,0.000125,m2,,

,油侧通道总面积,0.007425,m2,,

,油侧通道数,59.4,个,,

,油侧通道间隔,10,mm,,

,翅片间隔,3.6,mm,,

,总油侧单条翅片长度未压缩,122.5611901,m,,

,总油侧单条翅片长度已压缩,32.44266797,m,31,气道

,每根通道长度,0.546172861,m,10,油道

,油侧冷却面积,0.454197352,m2,,

气侧冷却面积,气侧经济质量流速,50,kg/(m2.s),,

,气侧经济流速,6.053268765,m/s,,

,气侧压力损失,0.01,MPa,,

,气冷高度,125,mm,,

,气侧单根通道截面积,0.00025,m2,,

,气侧通道总面积,0.00826,m2,,

,气侧通道数,33.04,个,,

,气侧通道间隔,10,mm,,

,翅片间隔,3.6,mm,,

,总气侧单条翅片长度未压缩,36.29854143,m,,

,总气侧单条翅片长度已压缩,9.60843