The effect of the number of blades on the characteristics of compressed air wind turbines using R1235 airfoil blade profile

Name: Wirachai Roynarin

Address: Rajamangala University of Technology Thanyaburi (RMUTT). Engineering Faculty

Email : wirachai_r@rmutt.ac.th

Name: Wongsakorn Wisatesajja

Organization : Rajamangala University of Technology Thanyaburi (RMUTT). Engineering Faculty

Name: Aguila, Gerald

Organization : Batangas State University. Mechanical Engineering Department

keyword: R1235 airfoil

ThaSH: Wind turbines

ThaSH: Wind turbines -- Aerodynamics

ThaSH: Aerofoils

Abstract: Renewable energy is an eco-friendly, economical, and unlimited source of energy. There are several applications that have been applied in human activities using wind energy to replace fossil fuel consumption. Since most Asian countries have low wind speed areas, the design of turbine blades must be applied to generate power at lower wind speed and in unsteady conditions. Wind speed is associated with selecting the tip speed ratio (TSR), which is an important parameter in the initial design phase of wind turbines. Generally, the TSR depends on the airfoil blade profile type used, the number of blades, and other parameters. This paper aimed to study the influence of the number of blades on the performance of the compressed air application. Two-blade and three-blade wind turbines with an R1235 airfoil blade profile equipped were tested in a wind tunnel at the Research and Service Energy Center (RSEC), Rajamangala University of Technology Thanyaburi (RMUTT). The results showed that the two-blade wind turbine could perform at a higher rotational speed of 1543 rpm and maximum TSR of 10.11 at a wind speed of 6 m/s, while the three-blade wind turbine performed at a rotational speed of 1231 rpm with a maximum TSR of 9.08 at a wind speed of 5 m/s. However, the three-blade wind turbine is more appropriate to be applied for wind turbine compressed air application due to the lower cut-in speed of 3 m/s and the ability to reach maximum TSR at a lower wind speed than the two-blade wind turbine. Also, it is more suitable for operation in low-wind speed areas.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2020

Modified: 2025-06-11

Issued: 2025-06-11

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BibliograpyCitation : In Ubon Ratchathani University Faculty of Engineering. The 11th TSME International Conference on Mechanical Engineering 2020 (TSME-ICoME11) (pp.190-199) Ubon Ratchathani : Ubon Ratchathani University

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