Jet quality characteristics according to nozzle shape of energy-recovery Pelton turbines in pressure-retarded osmosis

被引：15

作者：

Jo, In Chan ^{[1
,2
]}

Park, Joo Hoon ^{[1
,2
]}

Kim, Jeong-Won ^{[1
]}

Shin, Youhwan ^{[2
]}

Chung, Jin Taek ^{[3
]}

机构：

[1] Korea Univ, Grad Sch, Innovat Hall 332,Anam Ro 145, Seoul 136713, South Korea

[2] Korea Inst Sci & Technol, Ctr Urban Energy Res, Hwarangno 14 Gil 5, Seoul 136791, South Korea

[3] Korea Univ, Dept Mech Engn, Innovat Hall 310,Anam Ro 145, Seoul 136713, South Korea

来源：

DESALINATION AND WATER TREATMENT | 2016年 / 57卷 / 01期

关键词：

Energy recovery Pelton turbine; Jet quality; Nozzle throat angle; Nozzle coefficient; Pressure-retarded osmosis; CONCENTRATED BRINES; OSMOTIC POWER;

D O I：

10.1080/19443994.2016.1152641

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Pelton turbines are used for energy recovery in pressure-retarded osmosis (PRO) systems. The quality of jet sprays is a significant factor affecting the performance of these turbines. This study examined jet quality characteristics according to the nozzle geometry of Pelton turbines. Jet quality tests were conducted to analyze the degree of similarity between the actual jet flow and the ideal jet flow. Power loss, discharge coefficients, and performance characteristics of Pelton turbines were examined with respect to the nozzle shape through performance tests of the nozzles and turbines. Furthermore, jet flows were numerically analyzed. The test results and analyses confirm that for a given input power, the recirculation region increases and the jet quality decreases with increasing nozzle throat angle. On the basis of the results, the optimum range of nozzle throat angle for Pelton turbines in PRO systems is suggested.

引用

页码：24626 / 24635

页数：10

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