Experimental evaluation of a R134a/CO2 cascade refrigeration plant
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Otros documentos de la autoría: Sanz Kock, Carlos; Llopis, Rodrigo; Sánchez García-Vacas, Daniel; Cabello López, Ramón; Torrella Alcaraz, Enrique
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
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Título
Experimental evaluation of a R134a/CO2 cascade refrigeration plantAutoría
Fecha de publicación
2014Editor
ElsevierTipo de documento
info:eu-repo/semantics/articlePalabras clave / Materias
Resumen
We present the experimental evaluation of a R134a/CO2 cascade refrigeration plant designed for low evaporation temperature in commercial refrigeration applications. The test bench incorporates two single- stage vapour ... [+]
We present the experimental evaluation of a R134a/CO2 cascade refrigeration plant designed for low evaporation temperature in commercial refrigeration applications. The test bench incorporates two single- stage vapour compression cycles driven by semi hermetic compressors coupled thermally through two brazed plate cascade heat exchangers working in parallel and controlled by electronic expansion valves. The experimental evaluation (45 steady-states) covers evaporating temperatures from -40 to -30oC and condensing from 30 to 50oC. In each steady-state, we conducted a sweep of the condensing temperature of the low temperature cycle with speed variation of the high temperature compressor. Here, the energy performance of the plant is analysed, focusing on the compressors’ performance, temperature difference in the cascade heat exchanger, cooling capacity, COP and compressors discharge temperatures. [-]
Publicado en
Applied Thermal Engineering, 2014, Vol. 73, n. 1Derechos de acceso
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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