Thermodynamic Study of a Combined Power and Refrigeration System for Low-Grade Heat Energy Source

Saboora Khatoon, Nasser Mohammed A. Almefreji and Man-Hoe Kim
Additional contact information
Saboora Khatoon: School of Mechanical Engineering & IEDT, Kyungpook National University, Daegu 41566, Korea
Nasser Mohammed A. Almefreji: School of Mechanical Engineering & IEDT, Kyungpook National University, Daegu 41566, Korea
Man-Hoe Kim: School of Mechanical Engineering & IEDT, Kyungpook National University, Daegu 41566, Korea

Energies, 2021, vol. 14, issue 2, 1-13

Abstract: 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: organic Rankine cycle; energy efficiency; refrigeration cycle; waste heat (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://www.mdpi.com/1996-1073/14/2/410/pdf (application/pdf)
https://www.mdpi.com/1996-1073/14/2/410/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:14:y:2021:i:2:p:410-:d:479517

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().