Effect of the Blade Curvature Angle to Power Generation on the Drag Type Horizontal Axis Water Turbine

Muh Alwan Rosyidi; Arif Hidayat Purwono; Dominicus Danardono Dwi Prija Tjahjana; Eko Prasetya Budiana; Syamsul Hadi

Authors

Muh Alwan Rosyidi Department of Mechanical Engineering, Universitas Sebelas Maret Jl. Ir. Sutami 36 A, Surakarta, Central Java, Indonesia
Arif Hidayat Purwono Department of Mechanical Engineering, Akademi Teknologi Warga Surakarta Jl. Raya Solo-Baki Km.2, Sukoharjo, Central Java, Indonesia
Dominicus Danardono Dwi Prija Tjahjana Department of Mechanical Engineering, Universitas Sebelas Maret Jl. Ir. Sutami 36 A, Surakarta, Central Java, Indonesia
Eko Prasetya Budiana Department of Mechanical Engineering, Universitas Sebelas Maret Jl. Ir. Sutami 36 A, Surakarta, Central Java, Indonesia
Syamsul Hadi Department of Mechanical Engineering, Universitas Sebelas Maret Jl. Ir. Sutami 36 A, Surakarta, Central Java, Indonesia

Keywords:

Water turbine, drag type, blade angle, development

Abstract

The water flow in sewage pipes found in high-rise buildings has the potential of creating a pico-scale power generator. However, low head and debit rate condition should be taken as a consideration in turbine design choice. The design of turbine blade is an important factor in improving the turbine’s performance. In this research, drag-type turbine designs with various blade curvature angles of 100, 110, 120, 130, and 140 degrees were studied to understand the performances. The specimens were manufactured by the 3D printer. The turbines were installed with the head of 2 m on a pipe with the diameter of 82 mm. The performance of the turbines was analyzed based on power output, power coefficient, and tip speed ratio. The result shows that drag-type horizontal axis water turbine with the blade curvature angle of 140 degrees performed best by generating 7.4 Watt of power. The power coefficient generated was 0.07 at the Tip Speed Ratio of 0.76.