Experimental evaluation of a transcritical CO2 refrigeration facility working with an internal heat exchanger and a thermoelectric subcooler: Performance assessment and comparative
Évaluation expérimentale d’une installation frigorifique au CO2 transcritique fonctionnant avec un échangeur interne de chaleur et un sous-refroidisseur thermoélectrique : évaluation des performances et comparaison
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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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Title
Experimental evaluation of a transcritical CO2 refrigeration facility working with an internal heat exchanger and a thermoelectric subcooler: Performance assessment and comparative;Évaluation expérimentale d’une installation frigorifique au CO2 transcritique fonctionnant avec un échangeur interne de chaleur et un sous-refroidisseur thermoélectrique : évaluation des performances et comparaisonAuthor (s)
Date
2022-08-01Publisher
ElsevierISSN
01407007Bibliographic citation
Casi, Á., Aranguren, P., Araiz, M., Sanchez, D., Cabello, R., & Astrain, D. (2022). Experimental evaluation of a transcritical CO2 refrigeration facility working with an internal heat exchanger and a thermoelectric subcooler: Performance assessment and comparative. International Journal of Refrigeration, 141, 66-75.Type
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info:eu-repo/semantics/publishedVersionSubject
Abstract
The use of carbon dioxide in transcritical state has become one of the most used solutions to comply with the F-Gas directive and reduce greenhouse gases emissions from refrigeration systems at high ambient temperatures. ... [+]
The use of carbon dioxide in transcritical state has become one of the most used solutions to comply with the F-Gas directive and reduce greenhouse gases emissions from refrigeration systems at high ambient temperatures. For low-medium power units, the commonly used solutions to improve the efficiency such as the ejector, multiple compressor arrangements, mechanical subcooler, etc., add complexity and increase the cost of the refrigeration facility, which is not ideal for small units. In this low-medium power range, two technologies stand out to increase the performance of a carbon dioxide transcritical cycle: the internal heat exchanger and the thermoelectric subcooler. This study brings a complete research in which both solutions have been tested in the same experimental transcritical carbon dioxide refrigeration facility under the same working conditions. It focuses on the real performance of both systems and discusses the strengths and weaknesses of using an internal heat exchanger or a thermoelectric subcooler. The results show that the thermoelectric subcooler outperforms the internal heat exchanger in both the coefficient of performance and the cooling capacity while also being a more controllable and flexible solution. [-]
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International Journal of Refrigeration, Volume 141, September 2022, Pages 66-75Funder Name
Ministerio de Ciencia e Innovación of Spain (MICINN) | European Regional Development Fund (FEDER) | Universidad Pública de Navarra
Project code
RTI2018-093501-B-C21 | RTI2018-093501-B-C22
Rights
© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND
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info:eu-repo/semantics/openAccess
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