Attenuating Glazing Energy using Non-linear 3-D patterns

S.-J. Lin, H.-H. Li, Y.-C. Chou
National Kaohsiung University of Applied Sciences, TW

Keywords: solar radiation, modeling simulation, green glass

Summary:

Glazing solar energy is the main source to vary the thermal field inside of a building. In warm climates, the glazing radiant energy can rise rapidly due to the excessive incident irradiation and results in the drastic increase in temperature over the building envelope. Such indoor temperature is often high enough to against the requisition for the thermal comfort and yields the increase in air conditioning load and energy consumption as well. Reducing the glazing energy is a good solution to decrease the solar effect on the indoor temperature and further achieve energy savings. This work attempts incorporating non-linear patterns throughout the exterior surface of glass to attenuate the solar energy entering the glass component, and evaluates the thermal performance of patterned glass by comparing with that for the conventional flat glass. Modeling results indicate that the interior thermal load can be reduced as the solar radiant energy passes through the described patterned glass. Moreover, the pattern space appearing on the glass surface can potentially allow the maximum solar energy getting into the glass component and make more transmitted solar radiation entering indoors, thus it is advantageous to make the pattern space as small as possible.