Experimental evaluation of a R134a/CO2 cascade refrigeration plant
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Other documents of the author: Sanz Kock, Carlos; Llopis, Rodrigo; Sánchez García-Vacas, Daniel; Cabello López, Ramón; Torrella Alcaraz, Enrique
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comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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INVESTIGACIONMetadata
Title
Experimental evaluation of a R134a/CO2 cascade refrigeration plantAuthor (s)
Date
2014Publisher
ElsevierType
info:eu-repo/semantics/articleSubject
Abstract
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. [-]
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Applied Thermal Engineering, 2014, Vol. 73, n. 1Rights
http://rightsstatements.org/vocab/CNE/1.0/
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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- EMC_Articles [814]