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http://dx.doi.org/10.7316/khnes.2011.22.5.699

Performance Characteristics of Combined Heat and Power Generation with Series Circuit Using Organic Rankine Cycle  

Kim, Kyoung-Hoon (Department of Mechanical Engineering, Kumoh National Institute of Technology)
Jung, Young-Guan (Department of Mechanical Engineering, Kumoh National Institute of Technology)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.22, no.5, 2011 , pp. 699-705 More about this Journal
Abstract
A combined heat and power cogeneration system driven by low-temperature sources is investigated by the first and second laws of thermodynamics. The system consists of Organic Rankine Cycle (ORC) and an additional process heater as a series circuit. Seven working fluids of R152a, propane, isobutane, butane, R11, R123, isopentane and n-pentane are considered in this work. Maximum mass flow rate of a working fluid relative to that of the source fluid is considered to extract maximum power from the source. Results indicate that the second-law efficiency can be significantly increased due to the combined heat and power generation. Furthermore, higher source temperature and lower turbine inlet pressure lead to lower second-law efficiency of ORC system but higher that of combined system. Results also show that the optimum working fluid varies with the source temperature.
Keywords
Organic rankine cycle(ORC); CHP; Series circuit; Second law of thermodynamics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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