Study on Indoor Day-lighting Control with Shading Devices

摘要

Building a shading system is a good solution to energy conservation in hot summer.It has a big effect not only on indoor lighting environment control,but also on the control of indoor dazzling lighting.This paper takes a Shanghai villa as an object to study the characteristics of indoor lighting environment and energy use by using the software ECOTECT and DOE-2 after human activities and shading schedules are determined.Then,the light transmittance is taken as a control variable to study the effect of shading devices on indoor illumination distribution.Last,the effect of control strategy for shading devices on AC energy use is analyzed.Results show that the lighting transmittance and the ratio of window to wall area will have an effect on the selection of shading devices.