空调冷负荷计算ploris

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1、空调工程课程设计空调冷负荷计算一、屋顶冷负荷表1:屋顶冷负荷由附录8差得屋顶冷负荷计算温度逐时值twl，即可以按照CL=KF(t'w1-tNx)和式t'w1＝（twl+td）kаkρ。算出屋顶逐时值冷负荷，计算结果如下:时间8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl38.137.036.135.635.636.037.038.440.141.943.745.446.7td0.1Ka0.97Kp1.0t'wl37.0535.9935.1134.6334.6335.0235.9

2、937.3538.9940.7442.4944.1445.40tNx26K0.48F24000*15000=360CL1909.441726.271574.211491.261491.261558.661726.271961.282244.672547.072849.473134.593352.3212空调工程课程设计二、东外墙冷负荷表2:东外墙冷负荷由附录7查得东外墙冷负荷计算温度逐时值twl，即可以按照CL=KF(t'w1-tNx)和式t'w1＝（twl+td）kаkρ。算出屋顶逐时值冷负荷，计算结果如下:时间8:009:0010:0011:0012:001

3、3:0014:0015:0016:0017:0018:0019:0020:00twl36.035.535.235.035.035.235.636.136.637.137.537.938.2td0.5Ka0.97Kp1.0t'wl35.4134.9234.6334.4434.4434.6335.0235.5035.9936.4736.8637.2537.54tNx26△t9.418.928.638.448.448.639.029.509.9910.4710.8611.2511.54K1.5F15000*6000-2000*2000*2=82CL1157.43109

4、7.161061.491038.121038.121061.491109.461168.501228.771287.811335.781383.751419.4212空调工程课程设计三、南外墙冷负荷表3:南外墙冷负荷由附录7查得南外墙冷负荷计算温度逐时值twl，即可以按照CL=KF(t'w1-tNx)和式t'w1＝（twl+td）kаkρ。算出屋顶逐时值冷负荷，计算结果如下:时间8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl34.634.233.933.533.232.932.

5、832.933.133.433.934.434.9td-0.8Ka0.97Kp1.0t'wl32.7932.4032.1131.7231.4331.1431.0431.1431.3331.6232.1132.5933.08tNx26△t6.796.406.115.725.835.145.045.145.335.626.116.597.08K1.5F24000*6000-2000*2000*6=120CL1222.201152.001099.801029.60977.40925.20907.20925.20959.401011.601099.801186.2012

6、74.4012空调工程课程设计四、东外窗瞬时传热冷负荷表4:东外窗瞬时传热冷负荷根据ai＝8.7w/(㎡.k)，ao=3.5+5.6*v=22.54w/(㎡.k),由附录11查得Kw=3.101w/(㎡.k)。由附录12查得玻璃窗传热系数修正值，金属窗框双层窗，80%玻璃应乘以1.2的修正值。由附录13查得玻璃窗冷负荷计算温度的逐时值twl，根据公式CL=CwKwFw(tw1+td-tNx)，计算得下表:时间8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl26.927.929.0

7、29.930.831.531.932.232.232.031.630.829.9td1twl+td27.928.93030.931.832.532.933.233.23332.631.830.9tNx26△t1.92.944.95.86.56.97.27.276.65.84.9CwKw3.708Fw2000*2000*2=8CL46.7971.4198.50120.66142.82160.06170.02177.29177.29172.37162.52142.82120.66137.8272137.8272137.8272137.8272137.8272137.

8、8272137.8272