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Preliminary Performance Tests and Simulation of a V-Shape Roof Guide Vane Mounted on an Eco-Roof System

Author

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  • Xiaohang Wang

    (Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia
    School of Electronic and Information Engineering, Qinzhou University, Qinzhou 535000, China)

  • Wentong Chong

    (Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia)

  • Kokhoe Wong

    (Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia)

  • Liphuat Saw

    (Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia)

  • Sinchew Poh

    (Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia)

  • Saihin Lai

    (Department of Civil Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia)

  • Chin-Tsan Wang

    (Department of Mechanical and Electro-Mechanical Engineering, National I-Lan University, I-Lan 260, Taiwan)

Abstract

The technical and economic features of a patented V-shape roof guide vane (VRGV) with a solar and wind power generation system mounted on an eco-roof system are presented in this paper. Moreover, this innovative VRGV was investigated on for the purpose of improving the performance of a vertical axis wind turbine (VAWT), which was installed on an eco-roof system to solve the low-efficiency power generation problem of the wind turbines under the condition of a low wind speed. This paper proposes a preliminary study for the performance of the VAWT with the VRGV on a building. This research used a mock-up building with a double slope roof, where a five straight-bladed VAWT was mounted and tested under two conditions, with and without the VRGV. From the comparative experiments, the self-starting performance and rotational speed of the VAWT mounted above a double slope roof with the VRGV have been significantly improved compared to the VAWT without the VRGV. Further, the power coefficient ( C p ) of the VAWT can be augmented to about 71.2% increment due to the VRGV design. In addition, numerical simulations by computational fluid dynamics (CFD) were proposed to verify the augmented effect of the C p of the VAWT under the influence of the VRGV in the experiment. Besides, economic estimation of the VRGV was conducted.

Suggested Citation

  • Xiaohang Wang & Wentong Chong & Kokhoe Wong & Liphuat Saw & Sinchew Poh & Saihin Lai & Chin-Tsan Wang, 2018. "Preliminary Performance Tests and Simulation of a V-Shape Roof Guide Vane Mounted on an Eco-Roof System," Energies, MDPI, vol. 11(10), pages 1-33, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2846-:d:177234
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    References listed on IDEAS

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    Cited by:

    1. Xiaohang Wang & Wentong Chong & Kokhoe Wong & Saihin Lai & Liphuat Saw & Xianbo Xiang & Chin-Tsan Wang, 2019. "Preliminary Techno–Environment–Economic Evaluation of an Innovative Hybrid Renewable Energy Harvester System for Residential Application," Energies, MDPI, vol. 12(8), pages 1-28, April.
    2. Wang, Hao & Yi, Minyi & Zhang, Zutao & Zhang, Hexiang & Liu, Jizong & Zhu, Zhongyin & Wang, Qijun & Yuan, Yanping, 2023. "A wind-solar energy harvester based on airflow enhancement mechanism for rail-side devices," Energy, Elsevier, vol. 283(C).

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