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Frontiers in Energy

ISSN 2095-1701

ISSN 2095-1698(Online)

CN 11-6017/TK

邮发代号 80-972

2019 Impact Factor: 2.657

Frontiers in Energy  2016, Vol. 10 Issue (4): 459-465   https://doi.org/10.1007/s11708-016-0424-8
  本期目录
A method to predict cooling load of large commercial buildings based on weather forecast and internal occupancy
Junbao JIA,Jincheng XING,Jihong LING(),Ren PENG
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
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Abstract

Considering the fact that customers of large commercial buildings have the characteristics of the higher density and randomness, this paper presented an air-conditioning cooling load prediction method based on weather forecast and internal occupancy density. The multiple linear feedback regression model was applied to predict, with precision, the air conditioning cooling load. Case analysis showed that the largest mean relative error of hourly and the daily predicting cooling load maximum were 18.1% and 5.14%, respectively.

Key wordscommercial building    load prediction    multiple linear regression
收稿日期: 2015-08-23      出版日期: 2016-11-17
Corresponding Author(s): Jihong LING   
 引用本文:   
. [J]. Frontiers in Energy, 2016, 10(4): 459-465.
Junbao JIA,Jincheng XING,Jihong LING,Ren PENG. A method to predict cooling load of large commercial buildings based on weather forecast and internal occupancy. Front. Energy, 2016, 10(4): 459-465.
 链接本文:  
https://academic.hep.com.cn/fie/CN/10.1007/s11708-016-0424-8
https://academic.hep.com.cn/fie/CN/Y2016/V10/I4/459
Variable Classification Value
Commercial type
B1/B2
Furniture, building materials B1 = 1, B2 = 0
Department store B1 = 0, B2 = 1
Supermarket, clothing B1 = 0, B2 = 0
City
C1/C2
First-tier city C1 = 1, C2 = 0
Second-tier city C1 = 0, C2 = 1
Third-tier city C1 = 0, C2 = 0
Operating period
T1/T2
Working days T1 = 1, T2 = 0
The weekend T1 = 0, T2 = 1
Holiday T1 = 0, T2 = 0
Distance index Di The value is greater with the nearer of the distance from city center [1,10]
Commercial intensive index S * *
Tab.1  
Fig.1  
Building envelope Material Heat transfer coefficient/(W•m–2•K–1)
External wall 20 mm thick cement mortar
240 mm thick clay hollow block
20 mm thick cement mortar
1.88
Roof 10 mm thick quarry tile
25 mm thick cement mortar
1.5 mm thick polyurethane waterproof coating
20 mm cement mortar screed-coat
200 mm cement vermiculite stone thermal insulation layer
20 mm cement mortar screed-coat
120 mm thick reinforced concrete
0.58
External window Single layer thin ordinary plastic steel window 4.7
Tab.2  
Date Time Measured load/kW Dry-bulb temperature/°C Relative humidity/% Solar radiation/(W•m–2) Occupation density(person•m–2)
05.01 10:00 2313.479 24 21 65.453 0.0461
12:00 2571.599 27 17 182.530 0.0475
14:00 2516.832 28 15 176.513 0.0598
05.31 16:00 3359.369 27 15 44.945 0.0555
18:00 3133.088 24 24 15.874 0.0483
20:00 3068.565 22 41 0 0.0513
Tab.3  
Independent variables Unstandardized Coefficient Standard coefficient t Sig.
B Std. error
Constant 406.961 29.924 13.600 0.000
t 114.108 16.189 1.578 7.049 0.000
t1 -288.570 33.210 -4.355 -8.689 0.000
t2 228.217 32.153 3.707 7.098 0.000
t3 -92.345 14.878 -1.576 -6.207 0.000
RH 6.271 6.265 0.547 1.001 0.007
RH1 14.297 15.580 1.272 0.918 0.001
RH2 -42.409 15.767 -3.857 -2.690 0.318
RH3 21.812 6.441 2.023 3.387 0.359
R -0.547 0.254 -0.093 -2.154 0.032
R1 -0.473 0.268 -0.080 -1.767 0.078
R2 0.306 0.267 0.052 1.145 0.253
R3 0.205 0.246 0.035 0.832 0.406
D 2055.615 384.186 0.269 5.351 0.000
D1 -663.781 527.340 -0.090 -1.259 0.209
D2 -2642.853 558.581 -0.392 -4.731 0.000
D3 -1499.012 551.117 -0.245 -2.720 0.007
Tab.4  
Independent variables Unstandardized coefficient Standard coefficient t Sig.
B Std. error
Constant -3027.488 79.726 -37.974 0.000
t 137.899 2.579 1.066 53.474 0.000
RH 13.121 2.427 0.517 5.405 0.000
RH1 10.522 2.280 0.426 4.614 0.000
R -0.525 0.178 -0.078 -2.954 0.003
R1 -0.295 0.195 -0.042 -1.517 0.030
R2 -0.289 0.182 -0.042 -1.589 0.013
D 2065.993 232.102 0.130 8.901 0.000
Tab.5  
Fig.2  
Fig.3  
Fig.4  
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