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작동유체에 따른 유기랭킨사이클(ORC)의 열역학적 성능에 관한 연구Study of Working Fluids on Thermodynamic Performance of Organic Rankine Cycle (ORC)

Other Titles
Study of Working Fluids on Thermodynamic Performance of Organic Rankine Cycle (ORC)
Authors
김경훈
Issue Date
2011
Publisher
한국수소및신에너지학회
Keywords
Organic rankine cycle; Low-temperature energy source; Patel-Teja equation of state; Thermodynamic performance; 유기랭킨사이클; 저온 열원; Patel-Teja 상태방정식; 열역학적 성능
Citation
한국수소및신에너지학회논문집, v.22, no.2, pp 223 - 231
Pages
9
Journal Title
한국수소및신에너지학회논문집
Volume
22
Number
2
Start Page
223
End Page
231
URI
https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/23099
ISSN
1738-7264
Abstract
The thermal efficiency of energy-to-power conversion becomes uneconomically low when the temperature of heat source drops below 370℃. ORC (Organic Rankine Cycle) has attracted much attention in last few years due to its potential in reducing consumption of fossil fuels and relaxing environmental problems, and its favorable characteristics to exploit low-temperature heat sources. In this work thermodynamic performance of ORC using nine working fluids is comparatively assessed. Special attention is paid to the effect of system parameters such as turbine inlet temperature and pressure on the characteristics of the system such as volumetric flow rate and quality at turbine exit, latent heat, net work as well as thermal efficiency. Results show that in selection of working fluid it is required to consider various criteria of performance characteristics as well as the thermal efficiency. Results also show that the system efficiencies become same irrespective of kind of working fluid when the temperature of heat source decreases to low range.
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