Preliminary Assessment of Optimized Accessorial Roof Shape for Performance of Wind Turbine Mounted on Eco-Roof System

Wang, Xiao Hang and Chong, Wen Tong and Wong, Kok Hoe and Wang, Chin Tsan and Saw, Lip Huat and Poh, Sin Chew and Lai, Sai Hin (2018) Preliminary Assessment of Optimized Accessorial Roof Shape for Performance of Wind Turbine Mounted on Eco-Roof System. International Journal of Precision Engineering and Manufacturing-Green Technology, 5 (3). pp. 375-385. ISSN 2288-6206, DOI

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Transition from conventional energy paradigm to sustainable energy system is a major challenge in 21st century. This article presents a preliminary shape analysis of an accessorial roof with wind turbine to maximize the utilization of wind energy. This investigation focuses on the optimized accessorial roof shape to assess the performance of wind turbines mounted on an eco-roof. The optimization included inclination angle analyses of different variations of accessorial roofs and wind turbine power coefficient through numerical simulation. A V-shape accessorial roof with inclination angle of 19.5° is identified as the most effective roof inclination angle for wind energy harvesting which is due to a 63% wind speed-up and a lower turbulence intensity. The V-shape accessorial roof is capable of augmenting power output of a wind turbine installed on the building to about 1.375 times higher than that of 0.3366 without V-shape accessorial roof structure. A short straight channel integrated with the accessorial roof can further enhance the efficiency of the wind energy harvesting. This accessorial roof offered the possibility of harvesting wind energy in low wind speed areas. This design is also integrated with a solar photovoltaic system, daylight saving system, and rain water harvesting system. Finally, the power generated from the wind turbines of eco-roof system was estimated.

Item Type: Article
Funders: University of Malaya for the research grants allocated (RU018G-2016), Malaysian Ministry of Higher Education, MOHE for the Fundamental Research Grant Scheme (MO003-2014), Guangxi Department of Education for the research grants allocated (KY2016LX422), Qin Zhou University for the research grants allocated (2014PY-SJ09)
Uncontrolled Keywords: Eco-roof system; Inclination angle; Power generation performance; Roof shape; Wind turbine
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 19 Aug 2019 02:54
Last Modified: 24 Oct 2019 03:11

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