THERMAL SCIENCE

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Ertuğrul Cihan

,

Barış Kavasoğullari

ENERGY AND EXERGY ANALYSIS OF A COMBINED REFRIGERATION AND WASTE HEAT DRIVEN ORGANIC RANKINE CYCLE SYSTEM

ABSTRACT
Energy and exergy analysis of a combined refrigeration and waste heat driven organic Rankine cycle system were studied theoretically in this paper. In order to complete refrigeration process, the obtained kinetic energy was supplied to the compressor of the refrigeration cycle. Turbine, in power cycle, was driven by organic working fluid that exits boiler with high temperature and pressure. Theoretical performances of proposed system were evaluated employing five different organic fluids which are R123, R600, R245fa, R141b, and R600a. Moreover, the change of thermal and exergy efficiencies were examined by changing the boiling, condensing, and evaporating temperatures. As a result of energy and exergy analysis of the proposed system, most appropriate organic working fluid was determined as R141b.
KEYWORDS
energy, exergy, organic Rankine cycle, waste heat, refrigeration cycle
PAPER SUBMITTED: 2015-03-24
PAPER REVISED: 2015-12-31
PAPER ACCEPTED: 2016-01-12
PUBLISHED ONLINE: 2016-01-30
DOI REFERENCE: https://doi.org/10.2298/TSCI150324002C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Issue 6, PAGES [2621 - 2631]
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Energy and exergy analysis of a combined refrigeration and waste heat driven organic Rankine cycle system

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