An Investigation on Relationship between External Heat gain and Shading Device

An Investigation on Relationship between External Heat gain and Shading Device
Author(s):
Monica Sharma, Piyush Pant
Keywords:
Passive cooling, Direct solar Radiation, SHGC, Shading Device, slat angles.
Abstract
Building requires large amount of energy both for cooling and heating. In fact, it has been estimated that in hot climates due to solar gain contributes maximum amount of cooling load for residential as well as non-residential buildings. While solar gain through glazed facade contributes largely to these loads. Conventionally, we use shading device for reducing the direct heat gain through the windows. The shading devices usually prevent direct radiation coming from outside of the building and entering inside the building. Design and placement of shading devices becomes more useful when it is placed on right position as per the orientation of sun. A lot of studies have presented the effectiveness of slat angles and importance of deferent shapes. This Research also focuses on the effect of external shading devices on annual cooling load and also provides a simplified calculation approach with several conditions of increasing the size of shading device in terms of percentage of window height and width from 10% to 100% and calculate the effect of shading device at each condition based on manual calculation.
Article Details
Unique Paper ID: 156934 Publication Volume & Issue: Volume 9, Issue 5 Page(s): 542 - 548
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