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http://dx.doi.org/10.9726/kspse.2016.20.6.087

Performance Analysis of Ejector-Pump Thermal Energy Conversion System Using Various Working Fluids  

Yoon, Jung-In (Pukyong National University, Refrigeration and Air-conditioning Engineering Department)
Seol, Sung-Hoon (Department of Refrigeration and Air-conditioning, Pukyong National University)
Son, Chang-Hyo (Pukyong National University, Refrigeration and Air-conditioning Engineering Department)
Choi, Kwang-Hwan (Pukyong National University, Refrigeration and Air-conditioning Engineering Department)
Kim, Young-Bok (Pukyong National University, Mechanical System Engineering Depratment)
Lee, Ho-Saeng (Korea Research Institute of Ships&Ocean Engineering, Seawater Utilization Plant Research Center)
Kim, Hyeon-Ju (Korea Research Institute of Ships&Ocean Engineering, Seawater Utilization Plant Research Center)
Moon, Jung-Hyun (Korea Research Institute of Ships&Ocean Engineering, Seawater Utilization Plant Research Center)
Publication Information
Journal of Power System Engineering / v.20, no.6, 2016 , pp. 87-92 More about this Journal
Abstract
This research dealt with performance characteristics of OTEC system applying an ejector and additional pump. Each system using five kinds of working fluids was analyzed, and primary parameters with respect to entrainment ratio were examined: Turbine gross power, evaporation capacity, pump work, efficiency and volume flow ratio. The primary results were as following. The efficiency of ejector-pump OTEC system was dependent on entrainment of the ejector. The degree of efficiency change was different from applied working fluid, and amount of pump work was turned out to be primary factor affected system efficiency. Meanwhile, optimized entrainment ratio was different from applied working fluid since their different vapor density. System efficiency at optimized entrainmet ratio of each working fluid was around 5%, showing minor difference each other.
Keywords
Ocean Thermal Energy Conversion(OTEC); Ejector; Entrainment ratio; Volume flow ratio;
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