Analysis on the Influence of Building Envelope to Public Buildings Energy Consumption Based on DeST Simulation

In order to analyses the influence of building energy consumption with different thermal property building envelope, this paper took a public building where in Beijing as the research object with DeST-c software, and analyzed the influence of exterior walls, roof, exterior windows and the whole building envelop with different thermal property respectively. The simulation changed the single envelop thermal property while kept the whole building envelop thermal property constant, and pointed out that how energy saving redevelopment affected building energy after energy calculation. The results show that the transfer coefficients of the outside windows have largest effect on indoor thermal load, the roof is secondary, and exterior walls are weakest. Thus, the thermal performance of the building envelope and energy efficiency have a great relationship. (C) 2015 Published by Elsevier Ltd.