Study on Solar Shading Control for Atrium

摘要

A solar shading system for an atrium was proposed and its thermal perfomrance was verified by field meansrement and numerical simulation. For solar shading, the envelope of the atrium was designed to have double skins of glass with blinds in the cavity between the glass. Two types of ventilation in the cavity could be selected accordingto conditions such as solar radiation, air temperature, ect, Field measurement of the thermal environment was carried out in the atrium in summer and autumn. The result showed that the indoor thermal environemnt was considerably improved byeach solar shading control, and also suggested that in autumn, when the outdoor air temeprature became relatively low, natural ventilation was more effective than forced ventilation. the thermal performance of the double skins was also evaluated by means of numerical simulation. A simulation model which describes the thermal behavior ofeach component was develped and proved the possibility of predicting the thermal performnace ofthe double skins. By utilizing the simulation model, practival control methods of the shading system were developed and adlopted.