Experimental evaluation of CO2/R-152a mixtures in arefrigeration plant with and without IHX
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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INVESTIGACIONMetadata
Title
Experimental evaluation of CO2/R-152a mixtures in arefrigeration plant with and without IHXAuthor (s)
Date
2024-03-01Publisher
Elsevier LtdISSN
0140-7007Bibliographic citation
E. Sicco, M. Martínez-Ángeles, G. Toffoletti, L. Nebot-Andrés, D. Sánchez, R. Cabello, G. Cortella, R. Llopis, Experimental evaluation of CO2/R-152a mixtures in a refrigeration plant with and without IHX, International Journal of Refrigeration, Volume 159, 2024, Pages 371-384, ISSN 0140-7007, https://doi.org/10.1016/j.ijrefrig.2023.12.033.Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0140700723004887Version
info:eu-repo/semantics/acceptedVersionSubject
Abstract
In recent years, CO2-based mixtures have been considered as a way to improve the performance of refrigerating plants using pure CO2 as refrigerant. Combining CO2 with a fluid with higher critical temperature generates ... [+]
In recent years, CO2-based mixtures have been considered as a way to improve the performance of refrigerating plants using pure CO2 as refrigerant. Combining CO2 with a fluid with higher critical temperature generates a blend which allows to run a refrigeration plant in subcritical conditions at higher heat rejection temperature when compared to pure carbon dioxide, and consequently reach higher COP. This work evaluates from an experimental point of view two CO2/R-152a mixtures, ([90/10 %] and [95/5 %]), used as refrigerants in a single-stage refrigeration plant with and without internal heat exchanger, and compares the results to those obtained using pure CO2. The work analyses the main energy parameters of the plant for secondary fluid inlet temperature of 2.5 °C at the evaporator, and in the range from 20 °C to 40 °C with 5 °C step at the condenser/gas-cooler. The use of such mixtures, compared to the use of pure CO2, allowed to obtain a higher COP in the base cycle for heat rejection temperature above 25 °C, reaching the largest increment at the highest temperature while, when working with IHX cycle, no improvements in the COP were measured. [-]
Is part of
International Journal of Refrigeration, Volume 159, 2024.Funder Name
European Commission | Ministero dell’Istruzione, dell’Università e della Ricerca | Universitat Jaume I | Ministerio de Ciencia e Innovación
Project code
2017KAAECT, INVEST/2022/294, MGS/2022/15 | UJI-B2021–10 | PID2021–126926OB-C21
Rights
© 2023
info:eu-repo/semantics/embargoedAccess
info:eu-repo/semantics/embargoedAccess
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- EMC_Articles [823]