空調(diào)冷負(fù)荷計(jì)算plWord版

1、空調(diào)冷負(fù)荷計(jì)算一、屋頂冷負(fù)荷表1:屋頂冷負(fù)荷由附錄8差得屋頂冷負(fù)荷計(jì)算溫度逐時(shí)值twl，即可以按照CL=KF(t'w1-tNx)和式t'w1（twl+td）kk。算出屋頂逐時(shí)值冷負(fù)荷，計(jì)算結(jié)果如下:時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl38.1 37.0 36.1 35.6 35.6 36.0 37.0 38.4 40.1 41.9 43.7 45.4 46.7 td0.1Ka0.97Kp1.0 t'wl37.05 35.9935.1134.6334.6335.0235.9

2、937.3538.9940.7442.4944.1445.40tNx26 K0.48 F24000*15000=360CL1909.441726.271574.211491.261491.261558.661726.271961.282244.672547.072849.473134.593352.322 / 22二、東外墻冷負(fù)荷表2:東外墻冷負(fù)荷由附錄7查得東外墻冷負(fù)荷計(jì)算溫度逐時(shí)值twl，即可以按照CL=KF(t'w1-tNx)和式t'w1（twl+td）kk。算出屋頂逐時(shí)值冷負(fù)荷，計(jì)算結(jié)果如下:時(shí)間8:009:0010:0011:0012:0013:0014:0015:0

3、016:0017:0018:0019:0020:00twl36.0 35.5 35.2 35.0 35.0 35.2 35.6 36.1 36.6 37.1 37.5 37.9 38.2 td0.5Ka0.97Kp1.0 t'wl35.41 34.92 34.63 34.44 34.44 34.63 35.02 35.50 35.99 36.47 36.86 37.25 37.54 tNx26t9.41 8.92 8.63 8.44 8.44 8.63 9.02 9.50 9.9910.4710.86 11.2511.54K1.5F15000*6000-2000*2000*2=82CL

4、1157.431097.161061.491038.121038.121061.491109.461168.501228.771287.811335.781383.75 1419.42三、南外墻冷負(fù)荷表3:南外墻冷負(fù)荷由附錄7查得南外墻冷負(fù)荷計(jì)算溫度逐時(shí)值twl，即可以按照CL=KF(t'w1-tNx)和式t'w1（twl+td）kk。算出屋頂逐時(shí)值冷負(fù)荷，計(jì)算結(jié)果如下:時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl34.634.233.933.533.232.932.832.933.13

5、3.433.934.434.9td-0.8Ka0.97Kp1.0 t'wl32.79 32.40 32.11 31.72 31.43 31.14 31.04 31.14 31.33 31.62 32.11 32.59 33.08 tNx26t6.79 6.40 6.11 5.72 5.83 5.14 5.04 5.14 5.33 5.62 6.11 6.59 7.08 K1.5F24000*6000-2000*2000*6=120CL1222.20 1152.00 1099.80 1029.60 977.40 925.20 907.20 925.20 959.40 1011.60 10

6、99.80 1186.20 1274.40 四、東外窗瞬時(shí)傳熱冷負(fù)荷表4:東外窗瞬時(shí)傳熱冷負(fù)荷根據(jù)ai8.7w/(.k)，ao=3.5+5.6*v=22.54w/(.k),由附錄11查得Kw=3.101w/(.k)。由附錄12查得玻璃窗傳熱系數(shù)修正值，金屬窗框雙層窗，80%玻璃應(yīng)乘以1.2的修正值。由附錄13查得玻璃窗冷負(fù)荷計(jì)算溫度的逐時(shí)值twl，根據(jù)公式CL=CwKwFw(tw1+td-tNx)，計(jì)算得下表:時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl26.927.929.0 29.930.831.5

7、31.932.232.232.0 31.630.829.9td1twl+td27.928.93030.931.832.532.933.233.23332.631.830.9tNx26t1.92.944.95.86.56.97.27.276.65.84.9CwKw3.708Fw2000*2000*2=8CL46.7971.4198.50120.66142.82160.06170.02177.29177.29172.37162.52142.82120.66137.8272137.8272137.8272137.8272137.8272137.8272137.8272137.8272137.8272

8、五、南外窗瞬時(shí)傳熱冷負(fù)荷表5:南外窗瞬時(shí)傳熱冷負(fù)荷根據(jù)ai8.7w/(.k)，ao=3.5+5.6*v=22.54w/(.k)，由附錄11查得Kw=3.101w/(.k)。由附錄12查得玻璃窗傳熱系數(shù)修正值，金屬窗框雙層窗，80%玻璃應(yīng)乘以1.2的修正值。由附錄13查得玻璃窗冷負(fù)荷計(jì)算溫度的逐時(shí)值twl，根據(jù)公式CL=CwKwFw(tw1+td-tNx)，計(jì)算得下表:時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00twl26.927.92929.930.831.531.932.232.23231.630.829.

9、9td1twl+td27.928.93030.931.832.532.933.233.23332.631.830.9tNx26t1.92.944.95.86.56.97.27.276.65.84.9CwKw3.708Fw2000*2000*6=24CL140.37214.23295.50361.98428.46480.18510.06531.87531.87517.11487.56428.46361.98413.4816413.4816413.4816413.4816413.4816413.4816413.4816413.4816413.4816六、東窗日射得熱引起的冷負(fù)荷表6:東窗日射得熱引

10、起的冷負(fù)荷由附錄19查得雙層鋼窗有效面積系數(shù)Ca=0.75,故窗的有效面積Fw=8*0.75=6.由附錄17查得玻璃窗的遮陽(yáng)系數(shù)Cs=0.86；由附錄18查得玻璃窗內(nèi)的遮陽(yáng)設(shè)施的遮陽(yáng)系數(shù)Ci=0.5。于是綜合遮擋系數(shù)Ccs=CsCi=0.86*0.5=0.43，再由附錄16查得上海在緯度30°10'東向日射得熱因數(shù)最大值為539w/。由附錄21查得北區(qū)有內(nèi)遮陽(yáng)的玻璃窗冷負(fù)荷系數(shù)逐時(shí)值CLQ，用式:CL=CaCsCiFwDj,maxCLQ，計(jì)算逐時(shí)值進(jìn)入玻璃窗日射得熱引起的冷負(fù)荷。時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0

11、018:0019:0020:00CLQ0.820.790.590.380.240.240.230.210.180.150.110.080.07Dj,max539Cc,sCc,s=Cs*Ci=0.86*0.5=0.43Fw8*0.75=6CL1140.31 1098.59 820.47 528.44 333.75 333.75 319.84 292.03 250.31 208.59 152.97 111.25 97.34 七、南窗日射得熱引起的冷負(fù)荷表7:南窗日射得熱引起的冷負(fù)荷由附錄19查得雙層鋼窗有效面積系數(shù)Ca=0.75，故窗的有效面積Fw=8*0.75=6。由附錄17查得玻璃窗的遮陽(yáng)系數(shù)

12、Cs=0.86；由附錄18查得玻璃窗內(nèi)的遮陽(yáng)設(shè)施的遮陽(yáng)系數(shù)Ci=0.5。于是綜合遮擋系數(shù)Ccs=CsCi=0.86*0.5=0.43,再由附錄16查得上海在緯度30°10'南向日射得熱因數(shù)最大值為174w/,由附錄21查得北區(qū)有內(nèi)遮陽(yáng)的玻璃窗冷負(fù)荷系數(shù)逐時(shí)值CLQ，用式:CL=CaCsCiFwDj,maxCLQ，計(jì)算逐時(shí)值進(jìn)入玻璃窗日射得熱引起的冷負(fù)荷。時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00CLQ0.26 0.40 0.58 0.72 0.84 0.80 0.62 0.45 0.32

13、0.24 0.16 0.10 0.09 Dj,max174Cc,sCc,s=Cs*Ci=0.86*0.5=0.43Fw24*0.75=18CL350.16 538.70 781.12 969.67 1131.28 1077.41 834.99 606.04 430.96 323.22 215.48 134.68 121.21 八、照明設(shè)備冷負(fù)荷表8:照明設(shè)備冷負(fù)荷由于外置熒光燈，散流器裝設(shè)在空調(diào)房間內(nèi)，取n1=1.2;n2=0.8。根據(jù)室內(nèi)照明開(kāi)燈的時(shí)間為09:0018:00，開(kāi)燈時(shí)間為10個(gè)小時(shí)，由附錄26查得照明散熱冷負(fù)荷系數(shù)。按CL=1000n1n2NCLQ，計(jì)算結(jié)果列入表格:時(shí)間8:0

14、09:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00n11.2 n20.6N20W/m2*（24*15）m2=7.2KWCLQ0.630.90.910.930.930.940.950.950.950.960.960.37CL3265.924665.64717.444821.124821.124872.964924.84924.84924.84976.644976.641918.08九、設(shè)備負(fù)荷表9:設(shè)備形成的冷負(fù)荷辦公室設(shè)備散熱量：會(huì)議室有數(shù)臺(tái)電腦和2臺(tái)投影儀。每臺(tái)發(fā)熱功率為300w，利用系數(shù)為0.8，使用系數(shù)為0.8。時(shí)間8

15、:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00F360qf16qs5760十人體散熱形成的冷負(fù)荷表10:人體散熱形成的冷負(fù)荷會(huì)議室屬于靜坐,由表3-15可得,當(dāng)室溫為26時(shí)，成年男子每人散發(fā)的顯熱和潛熱量為qs=63W和ql=45W。由表3-14查得群集系數(shù)=0.96。根據(jù)會(huì)議室120人在會(huì)議室內(nèi)的總小時(shí)為12小時(shí)。由附錄27查得人體顯熱冷負(fù)荷系數(shù)逐時(shí)值,按CLs=nqsCLQ,計(jì)算人體顯熱散熱逐時(shí)冷負(fù)荷.按Qt=ntq1,計(jì)算人體潛熱散熱引起的冷負(fù)荷,然后將其計(jì)算結(jié)果列入表中:時(shí)間8:009:0010:0011:0

16、012:0013:0014:0015:0016:0017:0018:0019:0020:00CLQ00.550.640.70.750.790.810.840.860.880.890.910.920.920.920.920.920.920.920.920.920.920.92qs63n1200.96CLs03991.684644.865080.325443.25733.505878.666096.386241.546386.696459.266604.426676.996147.0726147.0726147.0726147.0726147.0726147.0726147.0726147.072

17、6147.0726147.072ql45CLl518451849175.689828.8610264.3210627.210917.5011062.6611280.3811425.5411570.6911643.2611788.4211860.99十一、內(nèi)維護(hù)結(jié)構(gòu)時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00Twp31.3tls2tls33.3tNx26K1.5F90CL985.5各分項(xiàng)逐時(shí)冷負(fù)荷匯總表表11:各分項(xiàng)逐時(shí)冷負(fù)荷匯總表由于室內(nèi)壓力略高于室外大氣壓力，因此不用考慮由室外空氣滲透引起的冷負(fù)荷?，F(xiàn)將上述

18、各分項(xiàng)逐時(shí)冷負(fù)荷計(jì)算結(jié)果列入表中，并逐時(shí)相加，以便求得會(huì)議室內(nèi)的冷負(fù)荷值。時(shí)間8:009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:00屋頂冷負(fù)荷1909.441726.271574.211491.261491.261558.661726.271961.282244.672547.072849.473134.593352.32東外墻冷負(fù)荷1157.431097.161061.491038.121038.121061.491109.461168.501228.771287.801335.781383.751419.421433.

19、57731433.57731433.57731433.57731433.57731433.57731433.57731433.57731433.5773南外墻冷負(fù)荷1222.21152.01099.81029.6977.4925.8907.2925.2959.41011.61099.81186.21274.4所有窗傳熱冷負(fù)荷187.16285.64394.0482.64571.28640.24680.08709.16709.16689.48650.08571.28482.64551.3088551.3088551.3088551.3088551.3088551.3088551.3088551.3088551.3088551.3088東窗日射冷負(fù)荷1140.311098.59820.47528.44333.75333.75319.84292.03250.31208.59152.97111.2597.34南窗日射冷負(fù)荷350.16538.70781.12969.671131.281077.41834.99606.04430.96323.22215.48134.68121.21內(nèi)維護(hù)結(jié)構(gòu)冷負(fù)荷985.5985.5985.5985.5985.5985.5985.5985.5985.5985.5985.5985.5985.5照明散熱冷負(fù)荷3265