Study on solar radiation and energy efficiency of building glass system

Focusing on North China’s climate trait, this paper analyzes the thermal characteristics and reasonable type choices of building glass system. The energy efficiency for summer shading solar heat and for winter penetrating solar heat are both calculated for the choices and shading coefficient optimization analysis of the glass system. On the basis of consideration of architecture technology problems and the energy efficiency of air-condition equipments, the formula of solar heat synthetically efficiency coefficient (SEC) is established in this paper. It will help to save energy of buildings and solar energy utilization in the winter.