Optimization of building external louver shading devices based on energy control

Analyses the solar heat transfer into a room through building external louver shading devices. Taking building annual energy consumption as control index, suggests the concept of total annual solar energy gain to optimize the louver shading construction with the louver angle and louver number as variables. Compares annual energy saving effects between the optimization model and the existing model. The results show that the louver angle is a very important factor influencing the southern louver shading effects but not the eastern and western louver shading effects, and that the concept of total annual solar energy gain is good for annual energy saving assessment of building shading devices.