2024-03-29T05:11:16Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1747602024-02-14T10:25:38Zcom_10234_7035com_10234_9col_10234_8617
Repositori UJI
author
Sánchez García-Vacas, Daniel
author
Cabello López, Ramón
author
Llopis, Rodrigo
author
Catalán-Gil, Jesús
author
Nebot-Andres, Laura
funder
The authors would like to acknowledge the financial support of Universitat Jaume I of Castellón, Spain through the research project P11B2015-66, and the Spanish Ministry of Economy and Competitiveness through the research project ENE2014-53760-R.
2018-05-21T10:39:03Z
2018-05-21T10:39:03Z
2018-07-05
SÁNCHEZ, D., et al. Energy assessment of an R134a refrigeration plant upgraded to an indirect system using R152a and R1234ze (E) as refrigerants. Applied Thermal Engineering, 2018, vol. 139, p. 121-134
1359-43111873-5606
http://hdl.handle.net/10234/174760
https://doi.org/10.1016/j.applthermaleng.2018.04.114
In this work the experimental results obtained from a direct expansion refrigerating plant converted into an indirect plant, are presented and discussed in terms of energy consumption for a commercial refrigerating unit plugged to a medium temperature cabinet. Refrigerants used in the analysis are R134a for direct system, and R134a, R152a and R1234ze(E) for indirect system. The evaluation has been performed at laboratory conditions using three different heat rejection levels: 43.6, 32.8 and 23.3 °C keeping constant the environmental conditions in the cabinet (25 °C; 55%). From the experimental tests performed during 24 h, it has been demonstrated that the adoption of an indirect configuration results in an increment of the total energy consumption of the refrigerating plant regardless the refrigerant adopted. The average increment registered was 21.8% for R134a, 18.7% for R152a and finally 27.2% for R1234ze(E). The adoption of an indirect system also reduces the refrigerant mass charge of the facility up to 62% depending on the refrigerant used.
eng
Copyright © Elsevier B.V.
commercial refrigeration
indirect system
R134a
R152a
R1234ze(E)
energy consumption
refrigerant charge reduction
Energy assessment of an R134a refrigeration plant upgraded to an indirect system using R152a and R1234ze(E) as refrigerants
info:eu-repo/semantics/article
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