Detailed Information

Cited 13 time in webofscience Cited 16 time in scopus
Metadata Downloads

Analysis of the high-efficiency EP-OTEC cycle using R152a

Authors
Yoon, Jung-InSeol, Sung-HoonSon, Chang-HyoJung, Suk-HoKim, Young-BokLee, Ho-SaengKim, Hyeon-JuMoon, Jung-Hyun
Issue Date
5월-2017
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
OTEC (Ocean Thermal Energy Conversion) cycle; EP-OTEC cycle; Liquid-vapor ejector; Motive pump
Citation
RENEWABLE ENERGY, v.105, pp 366 - 373
Pages
8
Journal Title
RENEWABLE ENERGY
Volume
105
Start Page
366
End Page
373
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/576
DOI
10.1016/j.renene.2016.12.019
ISSN
0960-1481
Abstract
Ocean thermal energy conversion (OTEC) cycles utilize renewable, eco-friendly heat sources. However, their low system efficiency diminishes their advantages and impedes commercialization opportunities. In this study, a liquid vapor ejector and a motive pump are used to enhance the efficiency of the OTEC system through a modified version called the ejector pump OTEC (EP-OTEC) cycle. By applying a liquid vapor ejector, lower turbine outlet pressure may result than in the basic OTEC cycle. Additionally, the motive pump increases the motive pressure, thereby strongly affecting the performance of the liquid vapor ejector. The heat source temperature, mass fraction of the motive flow, and motive pressure are varied to analyze the performance characteristics of the EP-OTEC cycle. Firstly, the higher heat source temperature yields greater turbine power for a given mass flow rate in an evaporator. Moreover, results show that the net power of the EP-OTEC cycle is clearly larger than that of the basic OTEC cycle, proving its superiority. The optimized EP-OTEC cycle using R152a yields a system efficiency of 4.0%, which is 38% higher than that of the basic OTEC cycle. (C) 2016 Elsevier Ltd. All rights reserved.
Files in This Item
Appears in
Collections
친환경해양개발연구본부 > 해수에너지연구센터 > Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Lee, Ho saeng photo

Lee, Ho saeng
친환경해양개발연구본부 (해수에너지연구센터)
Read more

Altmetrics

Total Views & Downloads

BROWSE