Evaluation of the optimal solar shading devices for enhancing daylight performance of school building : a case study of semi-arid climate-Erbil City

Joint Authors

Miran, Fenk D.
Abd Allah, Hardi K.

Source

ZANCO Journal of Pure and Applied Sciences

Publisher

Salahaddin University-Erbil Department of Scientific Publications

Publication Date

2016-06-30

Country of Publication

Iraq

No. of Pages

19

Main Subjects

Architecture Engineering

English Abstract

A well-integrated shading device has a greater positive impact on school building than any other sustainable building strategies.

The present research aims to propose and evaluate several architectural shading devices that can be integrated into educational building designs in daylight-illuminated classrooms lit from a single side in semi-arid climates.

These elements have a potential in allowing the penetration of natural daylight with improve indoor thermal environment and eventually reduce the energy consumption through cooling and artificial lighting.

The final goal of the research is to obtain the optimal parameters (geometry and materials) of shading devices for the simulated orientation of classrooms in the case study.

A computerized simulation tool (IES) is used to carry out the investigation; taking a typical public school building in Erbil City as the empirical background of the semi-arid climate.

A series of simulations are performed to determine the average illuminance value and the uniformity of the illuminance distribution in the classroom under various lighting conditions and orientations without shadings fitted to the window.

Then the numerical results are found to be compared with the illumination properties of different shading devices that have been considered.

The results indicate a different optimal shading device in terms of enhancing daylight properties in the classroom.

By giving appropriate physical dimensions, various shading devices can achieve the average illuminance requirement of (300-500 lux) and improve the lighting uniformity ratio (0.40–0.42) for east orientation within appropriate material.

Correspondingly, by using optimal shading device, the required illuminance ratio of 0.5 can be obtained simply in the classroom, accordingly, reduce the lighting power cost compared with the base-case.

Data Type

Conference Papers

Record ID

BIM-787480

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