DocumentCode :
2655197
Title :
Enhancing sustainability of a mini hydro station through a self-cleaning debris diverter
Author :
Chik, Muhammad Nazry ; Hasini, Hasril
Author_Institution :
TNB Res. Sdn. Bhd., Kawasan Institusi Penyelidikan Bangi, Kajang, Malaysia
fYear :
2011
fDate :
1-3 June 2011
Firstpage :
12
Lastpage :
16
Abstract :
Mini hydro can be among the most sustainable energy resource, appropriate for Malaysian condition. In its actual sense, `availability´ is one of the sustainability indicators, but choked intakes have been the main common issue that keep lowering the availability figure. This works aims to improve sustainability ranking of a mini hydro station by improving its availability through an improvement in its intake cleaning procedure. It takes Sg. Renyok Mini Hydro Station, located at Jeli, Kelantan, as a case study. Here, flow and geometry of the river are simulated using CFD, in order to establish a baseline on the flow profile. Characteristics and behaviour of floating debris at this station were studied giving 28 kg per day as the total amount of floating debris accumulated. 1.64% per hour, as the clogging rate was also established. A peculiar louvered steel diverter is designed, that when installed at a pre-determined angle of 73°, a self-cleaning effect can be realized. A physical model test of this structure has also been performed with a good success in proving the concept, obtaining an efficiency of 85% on diverting the floating debris. A meticulous cost-benefit analysis was performed, giving a favourable result: 1.72 cost-benefit ratio and 2.8 years simple payback period. The results presented herein can improve the station´s availability, while at the same time providing an alternative solution from the commonly available measures.
Keywords :
computational fluid dynamics; cost-benefit analysis; flow simulation; hydroelectric power stations; inductors; power generation economics; sustainable development; CFD simulation; Jeli; Kelantan; Malaysian condition; Sg. Renyok minihydrostation; choked intakes; clogging rate; cost-benefit analysis; intake cleaning procedure; louvered steel diverter; physical model test; self-cleaning debris diverter; station availability; sustainability ranking; sustainable energy resource; time 2.8 year; Availability; Cleaning; Computational fluid dynamics; Cost benefit analysis; Reservoirs; Rivers; Steel; computational fluid dynamic; green technology; mini hydro; self-cleaning; sustainability;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sustainable Energy & Environment (ISESEE), 2011 3rd International Symposium & Exhibition in
Conference_Location :
Melaka
Print_ISBN :
978-1-4577-0340-9
Type :
conf
DOI :
10.1109/ISESEE.2011.5977100
Filename :
5977100
Link To Document :
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