The improvement of building performance in one office building by using computer simulations

The purpose of this study is to assist the building owner of a 12-storey office building in deciding the type of retrofitting work to be done by comparing the various performances before and after the retrofitting using the TAS simulation software. Simulations of the building performances based on the original and proposed building systems (Mechanical, Envelope & Thermal) configurations are carried out. Three performances aspect (Thermal, Facade and Energy Consumption) will be examined. The simulations consist of modeling different boundary conditions, assumptions, and key design factors to illustrate the impacts on building performances. Two main considerations are simulated: a) change in window material from clear glass to low emissivity double glazed glass and; b) the change of air conditioning system from constant air volume to variable air volume system. The final system configurations selected shall improve the performances of the current building systems with low cost and high energy efficiency.