Sanz Kock, C.; Llopis, R.; Sánchez, D.; Cabello, R.; Torrella Alcaraz, E. (2014). Experimental evaluation of a R134a/CO2 cascade refrigeration plant. Applied Thermal Engineering. 73(1):41-50. doi:10.1016/j.applthermaleng.2014.07.041
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/52403
Title:
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Experimental evaluation of a R134a/CO2 cascade refrigeration plant
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Author:
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Sanz Kock, Carlos
Llopis, Rodrigo
Sánchez, Daniel
Cabello, Ramón
Torrella Alcaraz, Enrique
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UPV Unit:
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Universitat Politècnica de València. Departamento de Termodinámica Aplicada - Departament de Termodinàmica Aplicada
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Issued date:
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Abstract:
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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 30 C and condensing from 30 to 50 C. 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, focussing on the compressors' performance,
temperature difference in the cascade heat exchanger, cooling capacity, COP and compressors discharge temperatures.
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Subjects:
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Cascade
,
Two-stage
,
Low GWP
,
R134a
,
Carbon dioxide
,
Energy efficiency
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Copyrigths:
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Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
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Source:
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Applied Thermal Engineering. (issn:
1359-4311
) (eissn:
1873-5606
)
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DOI:
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10.1016/j.applthermaleng.2014.07.041
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.applthermaleng.2014.07.041
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Project ID:
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Jaume I University of Spain, P1.B2013-10
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Thanks:
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The authors gratefully acknowledge Jaume I University of Spain, who financed the present study through the research project P1.B2013-10.
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Type:
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Artículo
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