Assessment of energy and economic performance of office building models: a case study

2016 International Conference on New Energy and Future Energy System

Song, X.Y.^1,2 ; Ye, C.T.^1 ; Li, H.S.^1,2 ; Wang, X.L.^1 ; Ma, W.B.^1

Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conservation, Chinese Academy of Sciences, Guangzhou

510640, China^1

University of Chinese Academy of Sciences, Beijing

100049, China^2

关键词: Cost-effective methods;    Economic performance;    Energy performance of buildings;    Investment management;    Proportion of energy;    Sensitivity factors;    Shading coefficient;    Total energy consumption;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012007/pdf
DOI  :  10.1088/1755-1315/40/1/012007

来源: IOP

【 摘 要 】

Energy consumption of building accounts for more than 37.3% of total energy consumption while the proportion of energy-saving buildings is just 5% in China. In this paper, in order to save potential energy, an office building in Southern China was selected as a test example for energy consumption characteristics. The base building model was developed by TRNSYS software and validated against the recorded data from the field work in six days out of August-September in 2013. Sensitivity analysis was conducted for energy performance of building envelope retrofitting; five envelope parameters were analyzed for assessing the thermal responses. Results indicated that the key sensitivity factors were obtained for the heat-transfer coefficient of exterior walls (U-wall), infiltration rate and shading coefficient (SC), of which the sum sensitivity factor was about 89.32%. In addition, the results were evaluated in terms of energy and economic analysis. The analysis of sensitivity validated against some important results of previous studies. On the other hand, the cost-effective method improved the efficiency of investment management in building energy.