盐度进口温度(℃)出口温度(℃)处理量(Kg/s)定性温度(℃)定压比热(J/Kg/K)定压比热(J/Kmol/K)CaCl2-11-4-7.52771乙炔气相321124.6672086421.51676.31643647.75π3.1415926换热器效率0.98P0.162790698初选传热系数K'(W/m2/K)580管R3Φ初选管程流速(m/s)1.6管径d(m)总换热量Q(J/s)850983.78320.938初选壳程流速(m/s)-内径di(m)海水流量qsw(Kg/s)43.87192778初估传热面积A'(m2)55.0234624单程管数Ns热端温差deltaT136管长l(m)冷端温差deltaT222取壳程流速m/s15单程管长L(m)对数平均温差deltaTm(℃)28.42775325管程平均传热温度差(℃)26.66523255总管数N管程对流传热系数hi壳程传热系数ho总传热系数K管程流通截面积(m2)0.022619467壳程流通面积ao(m2)0.045Rsi海水流速ui(m/s)1.5794503911.6壳程流速uo(m/s)290.123457RsoRei6069.6763582100Re6000不用校正当量直径de(m)0.04078947KPri38.08486237reo2307447.44K/K'(μ/μw)^(-0.14)1μw按照-7.5℃取pro0.77657889换热器的实际传热面积校正系数Φ0.9070063512300Re10000ho61053.6908依Qi=Si△tmhi1051.45766壳程压降计算公式来自P205《化工原理》压强校核管壁温度计算公式来自续表5-19《换热器原理及计F0.5管程允许压降(pa)管外壁热流密度q1(W/m/℃)267.3123906fo0.17708262壳程允许压降(pa)管外壁温度tw1(℃)-7.527367182Ao0.0675误差校核△tw(℃)-0.027367182误差很小不再重算uo(m/s)193.415638管程压降计算公式来自续表5-19《换热器原理及计△P1’3170.94175壁温下水的粘度μwpas0.006391△P2'4038.11341管程黏度修正系数Φ1△Po14418.1103管程摩擦系数ξi0.045《换热器原理及计算》图1-19管子沿程压降△Pi(pa)8563.926808回弯压降△Pr(pa)12253.7873进出口管处质量流量Wn2(kg/m2s)1500ρw23300进出口管处压降△Pn2(pa)1374.185668管程结垢校正系数Φd21.21.4管程压降△p226355.44259尺寸计算[δ]t壳程接管直径d11.052706034焊接接头系数管程接管d20.298857514δ66.17625热传导系数(W/m/K)粘度(Pa*s)密度(Kg/m3)饱和蒸气压(Pa)分子量操作压强pa流量m3/h0.4650.00639112281927.20.0209167450.000009691.88926.037917647047000初选结构换热器原理的计算计算公式来自续表5-19《换热器原理及计算》0.025管间距s(m)0.031250.02管束中心处一排数管ne13.5617114三角形排列71.0752675972管束外沿与壳体间距0.056壳体内径Ds(m)0.506250.59.730284632长径比l/Ds124~25横放1.6217141052弓形折流板弓高h(m)0.1144152折流板间距B(m)0.1666670.45折流板数nB12.33333130.000086《换热器原理及计算》附录13-20.00017197673.54815921.161289931.1~1.2571.6283112847.38133084Φ0.339足够大计算公式来自续表5-19《换热器原理及计算》35000表5-2均满足35000表5-23750.9