B139

Use of Sustainable Building Environmental Model (SBEM) in Hong Kong Air-conditioned Buildings

Brief:

This study addresses a concept of the Sustainable Building Environmental Model (SBEM) developed to optimize energy consumption in air conditioning and ventilation (ACV) systems without any deterioration of indoor environmental quality (IEQ). The SBEM incorporates with two main components: an adaptive comfort temperature control module (ACT) and a carbon dioxide concentration demand control ventilation (DCV). These two modules are essential to maintain satisfaction of the Indoor Environmental Quality (IEQ) with optimum energy consumption, they provide a rational basis of effective control in air-conditioning system of buildings.

Mockup simulation package was developed to evaluate the dynamic performance of the energy and IEQ with the integration of the SBEM in an air-conditioned office. This simulation package was able to predict the annual cooling energy consumption in air-conditioned buildings, with satisfactory IEQ and optimal clothing value in office before any strategies being implementing in real systems. Tentative results suggested raising indoor temperature set-point may not be the most effective energy saving strategy in view of IEQ acceptance level, where selection of DCV system and adequate

Further information:

Mui KW, Wong LT, Xiao F, Cheung CT, Yu HC, 2015. Use of Sustainable Building Environmental Model (SBEM) in Hong Kong Air-conditioned Buildings, The 13th Asia Pacific Conference on the Built Environment, 19-20 November, Hong Kong, China. pp. 555-563