Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/43502
Title: A comprehensive sensitivity study of major passive design parameters for the public rental housing development in Hong Kong
Authors: Chen, X
Yang, H 
Zhang, W
Keywords: Energy saving
Mixed-mode ventilation
Passive design
Sensitivity analysis
Thermal comfort
Issue Date: 2015
Publisher: Pergamon Press
Source: Energy, 2015, v. 93 How to cite?
Journal: Energy 
Abstract: This paper presents a comprehensive SA (sensitivity analysis) of the typical PRH (public rental housing) development in Hong Kong based on a combined building energy, daylight and AFN (airflow network) simulation. A generic building model is constructed with a proposed MM (mixed-mode) ventilation control strategy to fulfill the thermal comfort requirement in the local green building guidance. The numerical modeling results are used to conduct both local and global sensitivity analyses to determine the relative importance of major passive design parameters, which comprehensively cover design aspects of the building layout, envelop thermophysics, building geometry and infiltration & air-tightness. The calculated global and local sensitivity indices on the cooling energy prove that the window solar heat gain coefficient, window to ground ratio, external obstruction and overhang projection fraction are the four most influential passive design factors. Similar results are also obtained when the lighting energy is specified as the output of the sensitivity analysis. The optimized building model derived from the sensitivity analysis is anticipated to achieve an energy saving of 41.6% compared to the baseline model as stipulated by the local building regulation. It is believed that sensitivity analysis is useful for identifying crucial design parameters to facilitate further optimization of the building performance in early architectural design stages.
URI: http://hdl.handle.net/10397/43502
ISSN: 0360-5442
EISSN: 1873-6785
DOI: 10.1016/j.energy.2015.10.061
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