Experimental Study of the Cross Flow Turbine

Sutikno, Djoko; Soenoko, Rudy; Soeparman, Sudjito; Wahyudi, Slamet

doi:10.4028/www.scientific.net/amm.836.304

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…Such microhydro power schemes would be valuable to be constructed in remote areas that lack of national grade-electricity. Many studiesconcerned with cross flow turbine characteristics have been carried out by researchers such as :Azis and Desai [1], Djoko Sutikno [2,3], Fiuzat and Akerkar [4], Hothersall,R [5], Kosrowpanah,S;et.al [6], Nakase et.all [7], Olgun [8], Ott and Chappell [9] and Varga [10].…”

Section: Introductionmentioning

confidence: 99%

The Performance Characteristics of The Low Head Cross Flow Turbine Using Nozzle Roof Curvature Radius Centered on Shaft Axis

Sutikno

Soenoko

Soeparman³

et al. 2019

IJIE

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The experimental study was intended to investigate the performance characteristics of three cross flow turbine models using nozzle roof curvature radius centered on shaft axis designed on the same flow rate, runner diameter and rotational speed with each model having different runner width as well as its nozzle entry arc. The nozzle and runner width were designed as the fuction of the nozzle entry arc, the shorter pair of runner-nozzle, the larger nozzle entry arc and vise versa. The nozzle entry arcs used in this experimental study were 75 o , 90 o and 120 o. In addition, the three models had equal cross sectional area of nozzle entry. The three turbine nozzles were designed to have roof curvature radius centered on shaft axis. The nozzle roof curvature were expected to be able to deliver water in better direction as well as its flow condition as the water entered the tubine runner. The experimental test rig consisted of three turbine models, pump, piping systems, magnetic flow meter, and tachometer. The Flow rates, that entered the turbine, supplied by the pump, were measured by the magnetic flow meter. The power generated on the turbine shaft was determined by measuring the torsion forces detected by using a spring balance and turbine speeds were detected by a hand held tachometer. The turbine performance characteristics were shown by the relation of efficiency versus flow rate, head, and specific speed; as well as the relation of efficiency versus velocity ratio and speed ratio. The velocity ratio was the ratio of runner pheripheral velocity to water jet velocity that entered the runner; the speed ratio was the ratio of runner speed to water jet speed entering the runner. The results of the study indicated that best efficiency points increased as the nozzle entry arc decreased or on the other hand best effisiency points decreased as the nozzle entry arc increased. The results showed that the cross flow turbine using 75 and 90 degree entry arcs indicated efficiency and power which was higher than that of turbine with 120 degree nozzle entry arc.

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Section: Introductionmentioning

confidence: 99%