循环水自然降温计算.doc

循环水池散热计算（1）水面蒸发和传导损失的热量：Qx （ 0.0174vf 0.0229 ） (Pb Pq) A(760/B)式中 Qx 水池表面蒸发损失的热量（ kJ/h ）； 热量换算系数， 4.1868 kJ /kcal ； 与水池水温相等的饱和蒸汽的蒸发汽化潜热（ kcal/kg ）；vf 水池水面上的风速（ m/s ），一般按下列规定采用：室内水池 vf 0.20.5 m/s ；露天水池 vf 23 m/s ；Pb 与水池水温相等的饱和空气的水蒸汽分压力（ mmHg ）； 3.782 KPaPq水池的环境（23）空气的水蒸汽压力（ mmHg ）；A水池的水表面面积（ m2 ）；B当地的大气压力（ mmHg ）。（2）加上水池的水表面、池底、池壁、管道和设备等传导所损失的热量：而水池的水表面、池底、池壁、管道和设备等传导所损失的热量，占水池水表面蒸发损失热量的 20% 。（3）水池补水加热所需的热量：Qbqb（tr- tb）/t式中 Qb水池补充水加热所需的热量(kJ/h)；热量换算系数，4.1868(kJ /kcal)；qb水池每日的补充水量(L)；按水池水量的510%确定；水的密度（kg/L）；tr水池水的温度（）。tb水池补充水水温（）；t加热时间（h）。（4）水池表面蒸发量的计算：Ws （Pq.b -Pa ）FB/B、 式中W 水池散湿量（ kg/h ）；系数， 0.0055710-5 kg/N.s ；Pq.b 与水池水温相等的饱和空气的水蒸汽分压力（ Pa）；Pq水池的环境空气的水蒸汽压力（ Pa ）；F水池的水表面面积（ m2 ）；B 标准的大气压力（ Pa ）；B、 当地的大气压力（ Pa ）； 饱和水蒸气压力表 温度t/绝对压强p/kPa水蒸汽的密度/kgm-3焓H/kJkg-1汽化热r/kJkg-1液体水蒸汽00.610.000.002491.102491.1050.870.0120.942500.802479.86101.230.0141.872510.402468.53151.710.0162.802520.502457.70202.330.0283.742530.102446.30253.170.02104.672539.702435.00304.250.03125.602549.302423.70355.620.04146.542559.002412.10407.380.05167.472568.602401.10459.580.07188.412577.802389.405012.340.08209.342587.402378.105515.740.10230.272596.702366.406019.920.13251.212606.302355.106525.010.16272.142615.502343.107031.160.20293.082624.302331.207538.550.24314.012633.502319.508047.380.29334.942642.302307.808557.880.35355.882651.102295.209070.140.42376.812659.902283.109584.560.50397.752668.702270.50100101.330.60418.682677.002258.40105120.850.70440.032685.002245.40110143.310.83460.972693.402232.00115169.110.96482.322701.302219.00120198.641.12503.672708.902205.20125232.191.30525.022716.402191.80130270.251.49546.382723.902177.60135313.111.72567.732731.002163.30140361.471.96589.082737.702148.70145415.722.24610.852744.402134.00150476.242.54632.212750.702118.50160618.283.25675.752762.902037.10170792.594.11719.292773.302054.001801003.505.15763.252782.502019.301901255.606.38807.642790.101982.402001554.777.84852.012795.501943.502101917.729.57897.232799.301902.502202320.8811.60942.452801.001858.502302798.5913.98988.502800.101811.602403347.9116.761034.562796.801761.802503977.6720.011081.452790.101708.602604693.7523.821128.762780.901651.702705503.9928.271176.912768.301591.402806417.2433.471225.482752.001526.502907443.2939.601274.462732.301457.403008592.9446.931325.542708.001382.503109877.9655.591378.712680.001301.3032011300.3065.951436.072648.201212.1033012879.6078.531446.782610.501116.2034014615.8093.981562.932568.601005.7035016538.50113.201