LAPSE:2023.29089
Published Article
LAPSE:2023.29089
Thermodynamic Study of a Combined Power and Refrigeration System for Low-Grade Heat Energy Source
Saboora Khatoon, Nasser Mohammed A. Almefreji, Man-Hoe Kim
April 13, 2023
This study focuses on the thermal performance analysis of an organic Rankine cycle powered vapor compression refrigeration cycle for a set of working fluids for each cycle, also known as a dual fluid system. Both cycles are coupled using a common shaft to maintain a constant transmission ratio of one. Eight working fluids have been studied for the vapor compression refrigeration cycle, and a total of sixty-four combinations of working fluids have been analyzed for the dual fluid combined cycle system. The analysis has been performed to achieve a temperature of −16 °C for a set of condenser temperatures 34 °C, 36 °C, 38 °C, and 40 °C. For the desired temperature in the refrigeration cycle, the required work input, mass flow rate, and heat input for the organic Rankine cycle were determined systematically. Based on the manifestation of performance criteria, three working fluids (R123, R134a, and R245fa) were chosen for the refrigeration cycle and two (Propane and R245fa) were picked for the organic Rankine cycle. Further, a combination of R123 in the refrigeration cycle with propane in the Rankine cycle was scrutinized for their highest efficiency value of 16.48% with the corresponding highest coefficient of performance value of 2.85 at 40 °C.
Keywords
Energy Efficiency, organic Rankine cycle, refrigeration cycle, waste heat
Suggested Citation
Khatoon S, Almefreji NMA, Kim MH. Thermodynamic Study of a Combined Power and Refrigeration System for Low-Grade Heat Energy Source. (2023). LAPSE:2023.29089
Author Affiliations
Khatoon S: School of Mechanical Engineering & IEDT, Kyungpook National University, Daegu 41566, Korea [ORCID]
Almefreji NMA: School of Mechanical Engineering & IEDT, Kyungpook National University, Daegu 41566, Korea
Kim MH: School of Mechanical Engineering & IEDT, Kyungpook National University, Daegu 41566, Korea [ORCID]
Journal Name
Energies
Volume
14
Issue
2
Article Number
en14020410
Year
2021
Publication Date
2021-01-13
Published Version
ISSN
1996-1073
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PII: en14020410, Publication Type: Journal Article
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LAPSE:2023.29089
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doi:10.3390/en14020410
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