Building use modes impact on simulation results and scheme evaluation

Building use modes are important for energy consumption simulation. But few research concerns building use modes, such as people behavior of opening/closing window, room temperature for airconditioner running, and air-conditioning space and time. In this paper, a more reasonable and practical use mode approaching the reality is proposed for building performance simulation. And this mode is compared with a ‘standard use mode’ common used in most simulation tools. Results show different building use modes will influence simulation results—energy and economic evaluation for one scheme.

Equivalent slabs approach to simulate the thermal performance of thermal bridges in building constructions

 In the paper, Equivalent Slabs approach is presented to compute thermal bridges in building constructions properly and quickly. The heat transfer of thermal bridges is decomposed into the heat transfer process influenced by outdoor temperature, indoor temperature and adjacent room temperature separately. 2+n (n is the number of adjacent rooms related to the thermal bridge) Equivalent Slabs are obtained to replace a thermal bridge to solve its 2+n heat transfer processes.