Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17993
Title: An energy performance assessment for indoor environmental quality (IEQ) acceptance in air-conditioned offices
Authors: Wong, LT 
Mui, KW 
Keywords: Air-conditioned offices
Indoor environmental quality (IEQ)
Thermal energy consumption
Issue Date: 2009
Publisher: Pergamon Press
Source: Energy conversion and management, 2009, v. 50, no. 5, p. 1362-1367 How to cite?
Journal: Energy conversion and management 
Abstract: Maintaining an acceptable indoor environmental quality (IEQ) for air-conditioned office buildings consumes a considerable amount of thermal energy. This study correlates thermal energy consumption with the overall occupant acceptance of IEQ in some air-conditioned offices. An empirical expression of an IEQ index associated with thermal comfort, indoor air quality, aural and visual comfort is used to benchmark the offices. Employing input parameters obtained from the building stocks of Hong Kong, the office portfolios regarding the thermal energy consumption and the IEQ index are determined by Monte Carlo simulations. In particular, an energy-to-acceptance ratio and an energy-to-IEQ improvement ratio are proposed to measure the performance of energy consumption for the IEQ in the air-conditioned offices. The ratios give the thermal energy consumption corresponding to a desirable percentage of IEQ acceptances and to an IEQ upgrade, respectively. The results showed a non-linear increasing trend of annual thermal energy consumption for IEQ improvement at the offices of higher IEQ benchmarks. The thermal energy consumption for visual comfort and indoor air quality would also be significant in these offices. This study provides useful information that incorporates the IEQ in air-conditioned offices into the development of performance evaluation measures for thermal energy consumption.
URI: http://hdl.handle.net/10397/17993
ISSN: 0196-8904
EISSN: 1879-2227
DOI: 10.1016/j.enconman.2009.01.005
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