Feasibility Study of Small-Diameter Pico-Hydro Breastshot Waterwheel by Computational Method

Authors

  • Dewi Puspita Sari Study Program of Mechanical Engineering Education, Faculty of Teacher Training and Education, Universitas Sriwijaya, South Sumatera, Indonesia
  • Dendy Adanta Department of Mechanical Engineering, Faculty of Engineering, Universitas Sriwijaya, Indralaya 30662, South Sumatera, Indonesia
  • Imam Syofii Study Program of Mechanical Engineering Education, Faculty of Teacher Training and Education, Universitas Sriwijaya, South Sumatera, Indonesia
  • Wadirin Wadirin Study Program of Mechanical Engineering Education, Faculty of Teacher Training and Education, Universitas Sriwijaya, South Sumatera, Indonesia
  • Aji Putro Prakoso Department of Mechanical Engineering, Universitas Jenderal Achmad Yani (UNJANI), Cimahi – Bandung, Indonesia
  • Dadan Hermawan Department of Mechanical Engineering, Universitas Jenderal Achmad Yani (UNJANI), Cimahi – Bandung, Indonesia
  • Ahmed Al-Manea Samawa Technical Institute, Al-Furat Al-Awsat Technical University, Iraq
  • Ramiz Ibraheem Saeed Department of Mechanical Engineering, Faculty of Engineering, University of Mosul, Mosul, Iraq
  • Ahmad Fudholi Solar Energy Research Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
  • Subagyo Subagyo Research Center for Energy Conversion and Conservation, National Research and Innovation Agency (BRIN), Serpong, 15314, Indonesia

DOI:

https://doi.org/10.37934/cfdl.15.11.169180

Keywords:

Pico-hydro, Waterwheel, Breastshot, Computational Method

Abstract

Breastshot water wheels have very good simplicity, efficiency, and low head working range which is suitable for use in tropical rainforest villages in Indonesia. One of the weaknesses of the breastshot water wheel is that it has a very slow rotational speed which makes it need a high transmission ratio to be coupled with the generator. This study investigates the performance of a breastshot water wheel at smaller diameters and modifying the bucket inlet angle (36°, 49°, 71°, and 90°) by the computational fluid dynamics (CFD) method. In this case, the breastshot waterwheel's diameter ratio is equal to the head. Based on CFD results, the new configuration (this study) allowed us to increase the rotational speed to 30 to 35 rpm, higher than typical rotational speeds of breastshot water wheels of less than 10 rpm. Then, the bucket inlet angle and wheel rotation affect the performance of the breastshot waterwheel and are expressed using empirical law. Based on the empirical law approach, the 49° bucket is recommended because it has a stable efficiency above 60% and a wide operating range; the large discharge fluctuations do not change the turbine performance significantly.

Author Biographies

Dewi Puspita Sari, Study Program of Mechanical Engineering Education, Faculty of Teacher Training and Education, Universitas Sriwijaya, South Sumatera, Indonesia

dewipuspita@fkip.unsri.ac.id

Dendy Adanta, Department of Mechanical Engineering, Faculty of Engineering, Universitas Sriwijaya, Indralaya 30662, South Sumatera, Indonesia

dendyadanta@ymail.com

Imam Syofii, Study Program of Mechanical Engineering Education, Faculty of Teacher Training and Education, Universitas Sriwijaya, South Sumatera, Indonesia

imamsyofii@unsri.ac.id

Wadirin Wadirin, Study Program of Mechanical Engineering Education, Faculty of Teacher Training and Education, Universitas Sriwijaya, South Sumatera, Indonesia

wadirin@fkip.unsri.ac.id

Aji Putro Prakoso, Department of Mechanical Engineering, Universitas Jenderal Achmad Yani (UNJANI), Cimahi – Bandung, Indonesia

ajipp13@gmail.com

Dadan Hermawan, Department of Mechanical Engineering, Universitas Jenderal Achmad Yani (UNJANI), Cimahi – Bandung, Indonesia

dadanhermawan@gmail.com

Ahmed Al-Manea, Samawa Technical Institute, Al-Furat Al-Awsat Technical University, Iraq

dr.ahmed.almanea@atu.edu.iq

Ramiz Ibraheem Saeed, Department of Mechanical Engineering, Faculty of Engineering, University of Mosul, Mosul, Iraq

ramizibraheem76@uomosul.edu.iq

Ahmad Fudholi, Solar Energy Research Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

a.fudholi@gmail.com

Subagyo Subagyo, Research Center for Energy Conversion and Conservation, National Research and Innovation Agency (BRIN), Serpong, 15314, Indonesia

suba002@brin.go.id

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Published

2023-09-30

How to Cite

Sari, D. P., Adanta, D., Syofii, I., Wadirin, W., Prakoso, A. P., Hermawan, D. ., Al-Manea, A. ., Saeed, R. I. ., Fudholi, A., & Subagyo, S. (2023). Feasibility Study of Small-Diameter Pico-Hydro Breastshot Waterwheel by Computational Method. CFD Letters, 15(11), 169–180. https://doi.org/10.37934/cfdl.15.11.169180

Issue

Vol. 15 No. 11: November (2023)

Section

Articles

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