Author(s): Young Soo Kim, Joo Hoon Park, Youhwan Shin, Jin Taek Chung
Linked Author(s): Young Soo Kim
Keywords: Pelton turbine, energy recovery turbine, Pressure Retarded Osmosis (PRO), impulse turbine, casing
Abstract: The purpose of this study is to investigate performance characteristic changes of the Pelton turbine according to the modification of casing design. The Pelton turbine is widely used as the energy recovery device at the generating system of Pressure Retarded Osmosis (PRO). The casing design of the Pelton turbine affects the performance of the Pelton turbine by changing the splash water distribution that occurs after the water leaves the bucket. Therefore, this study investigates the performance characteristics of the turbine with different casing designs of the Pelton turbine. In this experimentation, laboratory scale equipment of Pelton turbine is manufactured for the performance test. In order to change the shape of the casing, the circular structures are produced with different widths. Through the experimental performance test, the efficiency of the Pelton turbine according to the speed ratio is calculated at the same operating condition (278 LPM, 30 bar) for each shape. As a result, it has been confirmed that the 40 mm width of casing design shows the least windage losses at design conditions. Afterwards, this study can be utilized in the various casing design of the energy recovery turbine
Year: 2017