Effect on Thermal Performance by Different Types of Fixed Sun Shading Devices
Mohd Fadlullah Gimat1, Mohd Khairul Azhar Mat Sulaiman2

1M. F. Gimat, Department of Architecture and Planning, Development and Maintainence Office, Universiti Tun Hussein Onn Malaysia, Batu Pahat, Johor, Malaysia.
2M. K. A. M. Sulaiman*, Department of Architecture and Built Environment, Fakulty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.
Manuscript received on January 23, 2020. | Revised Manuscript received on February 05, 2020. | Manuscript published on February 30, 2020. | PP: 3713-3718 | Volume-9 Issue-3, February 2020. | Retrieval Number:  C6298029320/2020©BEIESP | DOI: 10.35940/ijeat.C6298.029320
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: An application of sun-shading device is one of the options to elevate the exterior façade appearance while keeping the thermal performance at the best for the indoor. This research aimed to evaluate the effectiveness of selected types of fixed passive sun-shading devices installed at three-story terrace shop houses in Malaysia. Most previous studies on this passive strategy have been conducted via software simulation, in which results were not validated by field measurement. Therefore, this research employed stationary experiment on actual building and meteorological condition using three types of fixed shading devices: egg crates (SDE), vertical (SDV), and horizontal (SDH). SDE showed significant improvement on indoor thermal environment by reducing indoor air temperature (Ta) of about 0.98 K on the average of a month and 2.11 K on the highest temperature on the average of a month. SDE also showed significant performance during the hottest sunny day, in which it reduced 1.23 K for the average of a day. Meanwhile, on the hottest peak time, SDE reduced 5.40 K compared to the control room. Similarly, for indoor mean radiant temperature (Tmrt), SDE showed notable performance during the high peak temperature on the average of a month (2.38 K) and during the hottest day (7.70 K) compared to control room, SDV, and SDH. On top of that, SDH also showed similar performance as SDE on the average of a month by a difference of 0.03 K. The experimental results also indicate that SDH showed the best performance at night by releasing heat faster than other types of sun-shading devices. This passive solution is one of the best options to improve indoor thermal performance and potentially contribute to energy savings on the building operation.
Keywords: Fixed sun-shading device, Egg crate shading device, Horizontal shading device, Vertical shading device, Indoor thermal performance