A Kalina cycle is coupled to an ejector refrigeration cycle to generate power and refrigeration outputs, simultaneously. Ejector refrigeration cycle is driven by the heat which is extracted from a high-temperature/pressure stream of Kalina cycle working fluid since the energy content of this fluid stream is not directly utilized in power production in the Kalina cycle. Supplied heat to the proposed combined cycle is produced by combustion of biomethane which is obtained from anaerobic digestion of biomass, namely, food waste. System reactions to altering operation conditions (entrainment ratio, condenser pressure, evaporator pressure, and superheating degree) in terms of refrigeration production, power production, energy efficiency, exergy efficiency, and exergy of produced power and refrigeration are analyzed. The results are reported for R290, R134a, and R152a working fluids of the ejector refrigeration cycle and an extensive discussion of the results are provided. It is shown that the entrainment ratio strongly affects the thermal and exergy efficiency results. The highest thermal and exergy efficiency results are performed when R290 and R134a are used, whereas the lowest thermal and exergy efficiencies are obtained when R152a and R290 are used as the refrigerant, respectively.
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January 2020
Research-Article
Effect of Operational Parameters on a Novel Combined Cycle of Ejector Refrigeration Cycle and Kalina Cycle
Candeniz Seckin
Candeniz Seckin
Department of Mechanical Engineering,
Faculty of Engineering,
Goztepe Campus,
Istanbul 34722,
e-mails: candeniz.seckin@marmara.edu.tr; denizseckin1@gmail.com
Faculty of Engineering,
Marmara University
,Goztepe Campus,
Istanbul 34722,
Turkey
e-mails: candeniz.seckin@marmara.edu.tr; denizseckin1@gmail.com
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Candeniz Seckin
Department of Mechanical Engineering,
Faculty of Engineering,
Goztepe Campus,
Istanbul 34722,
e-mails: candeniz.seckin@marmara.edu.tr; denizseckin1@gmail.com
Faculty of Engineering,
Marmara University
,Goztepe Campus,
Istanbul 34722,
Turkey
e-mails: candeniz.seckin@marmara.edu.tr; denizseckin1@gmail.com
Contributed by the Advanced Energy Systems Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received April 1, 2019; final manuscript received July 4, 2019; published online July 23, 2019. Assoc. Editor: Samer F. Ahmed.
J. Energy Resour. Technol. Jan 2020, 142(1): 012001 (11 pages)
Published Online: July 23, 2019
Article history
Received:
April 1, 2019
Revision Received:
July 4, 2019
Accepted:
July 8, 2019
Citation
Seckin, C. (July 23, 2019). "Effect of Operational Parameters on a Novel Combined Cycle of Ejector Refrigeration Cycle and Kalina Cycle." ASME. J. Energy Resour. Technol. January 2020; 142(1): 012001. https://doi.org/10.1115/1.4044220
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