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

Wang, Hang; Chong, Wen Tong; Hoe, Wong Kok; Wang, Chin‐Tsan; Huat, Saw Lip; Chew, Poh Sin; Hin, Lai Sai

doi:10.1007/s40684-018-0040-7

Cited by 10 publications

(9 citation statements)

References 22 publications

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“…Through a series of CFD numerical simulations and lab verification experiments, a tilt angle of 19.5° [46] is determined as the optimum geometric parameter for the present VRGV to enhance wind speed and lead to a lower turbulence intensity between the two-layered roof structure, refer to Figures 9 and 10.…”

Section: Features Of the V-shape Roof Guide Vane (Vrgv)mentioning

confidence: 99%

“…The mean wind speed in Subang city, Malaysia is shown in Table 9. According to a series of CFD simulations and experiments, a wind speed augmented factor (f = 1.63) due to the VRGV was determined [46]. The augmented wind speed due to the VRGV design at the location of the eco-roof system (Subang city, Malaysia) is shown in Table 10.…”

Section: Cost-effectiveness Of Wind Power Generation Systemmentioning

confidence: 99%

“…Annual power generation of the wind turbines embedded in the double slope roof and VRGV, G wind * (kWh per year) [46] 697.46…”

Section: Item Valuementioning

confidence: 99%

“…Wind velocity contour distribution for the VRGV with pitch angle 19.5 • . Reprint with permission[46]; 2018, Springer.…”

mentioning

confidence: 99%

“…Wind speed distribution along the central vertical line between the two-layers of the roof structure at different tilt angles of the VRGV[46].…”

mentioning

confidence: 99%

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

et al. 2018

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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 (Cp) 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 Cp of the VAWT under the influence of the VRGV in the experiment. Besides, economic estimation of the VRGV was conducted.

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Section: Features Of the V-shape Roof Guide Vane (Vrgv)mentioning

confidence: 99%

Section: Cost-effectiveness Of Wind Power Generation Systemmentioning

confidence: 99%

“…Annual power generation of the wind turbines embedded in the double slope roof and VRGV, G wind * (kWh per year) [46] 697.46…”

Section: Item Valuementioning

confidence: 99%

“…Wind velocity contour distribution for the VRGV with pitch angle 19.5 • . Reprint with permission[46]; 2018, Springer.…”

mentioning

confidence: 99%

“…Wind speed distribution along the central vertical line between the two-layers of the roof structure at different tilt angles of the VRGV[46].…”

mentioning

confidence: 99%

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

et al. 2018

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Design and fabrication of fluid flow characteristic controllable trawl door using a trailing edge flap

Lee

Yoon²,

Park³

et al. 2019

J Mech Sci Technol

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Growth of an Ag3Sn Intermetallic Compound Layer Within Photovoltaic Module Ribbon Solder Joints

Jeon

Kang

Shin

2019

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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In this study, the characteristics of growing an intermetallic compound(IMC) layer at solder joint in photovoltaic (PV) ribbon solder joint were investigated through the thermal ageing test. Also, the growth rate of IMC in the ribbon solder joint, which depend on the temperature and time, was predicted through the ageing test. That the ageing test were performed under three different conditions: 90 °C, 120 °C and 150 °C. Also, we prepare the two type solder composition(60Sn40Pb, 62Sn2Ag36Pb) to analyze Ag addition effect in solder to forming IMC layer. Following testing, the IMC layer formed Ag 3 Sn in Ag sintered layer by Sn diffusion phenomena at high temperature. The thickness of Ag 3 Sn in solder joint was measured by cross-section images during the thermal ageing test. The Ag 3 Sn IMC layer was filled in sintered Ag layer in 70 h under the harshest conditions of 150 °C and 750 h at 120 °C. The Ag 3 Sn thicknesses were calculated to activation energies forming IMC layer in solder joints. The results, the Ag 3 Sn growth rates under the various temperatures were predicted for long-term reliability of PV modules.

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

Cited by 10 publications

References 22 publications

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

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

Design and fabrication of fluid flow characteristic controllable trawl door using a trailing edge flap

Growth of an Ag3Sn Intermetallic Compound Layer Within Photovoltaic Module Ribbon Solder Joints

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