Jo, In Chan Park, Joo Hoon Kim, Jeong-Won Shin, Youhwan Chung, Jin Taek 2024-01-20T03:02:53Z 2024-01-20T03:02:53Z 2021-09-04 2016-11 1944-3994 https://pubs.kist.re.kr/handle/201004/123517 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. English DESALINATION PUBL CONCENTRATED BRINES OSMOTIC POWER Jet quality characteristics according to nozzle shape of energy-recovery Pelton turbines in pressure-retarded osmosis Article 10.1080/19443994.2016.1152641 1 DESALINATION AND WATER TREATMENT, v.57, no.1, pp.24626 - 24635 DESALINATION AND WATER TREATMENT 57 1 24626 24635 scie scopus 000385564400052 2-s2.0-84961211590 Engineering, Chemical Water Resources Engineering Water Resources Article CONCENTRATED BRINES OSMOTIC POWER Energy recovery Pelton turbine Jet quality Nozzle throat angle Nozzle coefficient Pressure-retarded osmosis