Experimental evaluation of CO2/R-152a mixtures in arefrigeration plant with and without IHX
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INVESTIGACIONMetadatos
Título
Experimental evaluation of CO2/R-152a mixtures in arefrigeration plant with and without IHXAutoría
Fecha de publicación
2024-03-01Editor
Elsevier LtdISSN
0140-7007Cita bibliográfica
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.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://www.sciencedirect.com/science/article/pii/S0140700723004887Versión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
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. [-]
Publicado en
International Journal of Refrigeration, Volume 159, 2024.Entidad financiadora
European Commission | Ministero dell’Istruzione, dell’Università e della Ricerca | Universitat Jaume I | Ministerio de Ciencia e Innovación
Código del proyecto o subvención
2017KAAECT, INVEST/2022/294, MGS/2022/15 | UJI-B2021–10 | PID2021–126926OB-C21
Derechos de acceso
© 2023
info:eu-repo/semantics/embargoedAccess
info:eu-repo/semantics/embargoedAccess
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