Conversion of a direct to an indirect commercial (HFC134a/CO2) cascade refrigeration system: Energy impact analysis
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http://dx.doi.org/10.1016/j.ijrefrig.2016.09.012 |
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Título
Conversion of a direct to an indirect commercial (HFC134a/CO2) cascade refrigeration system: Energy impact analysisAutoría
Fecha de publicación
2017Editor
ElsevierISSN
0140-7007Cita bibliográfica
Sánchez, D., Llopis, R., Cabello, R., Catalán-Gil, J., & Nebot-Andrés, L. (2017). Conversion of a direct to an indirect commercial (HFC134a/CO 2) cascade refrigeration system: Energy impact analysis. International Journal of Refrigeration, 73, 183-199Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.sciencedirect.com/science/article/pii/S0140700716302924Palabras clave / Materias
Resumen
Energy impact of conversion of a direct HFC134a/CO2 cascade refrigeration system to an indirect HFC134a-secondary fluid / CO2 cascade for commercial applications is experimentally analysed. Refrigeration systems, fully ... [+]
Energy impact of conversion of a direct HFC134a/CO2 cascade refrigeration system to an indirect HFC134a-secondary fluid / CO2 cascade for commercial applications is experimentally analysed. Refrigeration systems, fully described, have been tested in laboratory conditions, at three condensing temperatures (25, 35 and 45 °C), providing the cooling needs to a cabinet for fresh product (2 °C) and to another for frozen product (−20 °C), both placed inside a climatic chamber simulating the indoor conditions of a supermarket. Energy evaluation considered 24 hour tests of stable operation in each test condition. A decrease from 1.9 to 3.5 K of the evaporation temperature of the high temperature cycle has been measured when using an indirect system. It resulted in a variation of the energy consumption of the whole system between 7.6 to 14.0% when using propylene-glycol/water and between −0.3 to 11.1% when using Temper −20® as secondary fluid. [-]
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International Journal of Refrigeration, 2017, vol. 73Derechos de acceso
© 2016 Elsevier Ltd and IIR. All rights reserved.
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