Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32811
Title: A simplified energy performance assessment method for existing buildings based on energy bill disaggregation
Authors: Yan, C
Wang, S 
Xiao, F 
Keywords: Assessment method
Building energy performance
Cooling energy balance
Energy bill disaggregation
Issue Date: 2012
Publisher: Elsevier
Source: Energy and buildings, 2012, v. 55, p. 563-574 How to cite?
Journal: Energy and buildings 
Abstract: This paper presents a simplified energy performance assessment method for existing buildings in cooling season, which is based on energy bill disaggregation and energy performance analysis. This method requests very limited building energy data and can effectively assess the energy performance at building and system levels, and disaggregate the whole-building consumption into consumptions of three groups of end-uses. This method is based on two basic energy balance principles, i.e.; the electricity consumption balances at building level and the cooling energy balances between demand side and supply side of HVAC systems. An optimization algorithm is developed to establish best possible cooling energy balances by minimizing the balance residuals and therefore to disaggregate the energy consumption of different users. The performance of the proposed method was validated in two existing buildings in Hong Kong and Beijing. The results, including the disaggregated energy consumptions and the key energy performance indicators of HVAC system, agreed well with the "measured" data in mechanical cooling months.
URI: http://hdl.handle.net/10397/32811
ISSN: 0378-7788
EISSN: 1872-6178
DOI: 10.1016/j.enbuild.2012.09.043
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