Experimental evaluation of an Internal Heat Exchanger in a CO2 subcritical refrigeration cycle with gas-cooler
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comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
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INVESTIGACIONMetadata
Title
Experimental evaluation of an Internal Heat Exchanger in a CO2 subcritical refrigeration cycle with gas-coolerAuthor (s)
Date
2015-04-05xmlui.dri2xhtml.METS-1.0.item-edition
PostprintPublisher
ElsevierBibliographic citation
LLOPIS DOMÉNECH, Rodrigo; SANZ KOCK, Carlos; CABELLO LÓPEZ, Ramón; SÁNCHEZ GARCÍA-VACAS, Daniel; TORRELA ALCARAZ, Enrique. Experimental evaluation of an Internal Heat Exchanger in a CO2 subcritical refrigeration cycle with gas-cooler. Applied Thermal Engineering (2015), v. 80, n. 5, pp 31-41Type
info:eu-repo/semantics/articlePublisher version
http://www.sciencedirect.com/science/article/pii/S1359431115000459Subject
Abstract
We present the experimental evaluation of an internal heat exchanger or suction-line/liquid-line heat exchanger in a CO2 subcritical refrigeration plant with gas-cooler. The plant, driven by a 1.5kW CO2 semi hermetic ... [+]
We present the experimental evaluation of an internal heat exchanger or suction-line/liquid-line heat exchanger in a CO2 subcritical refrigeration plant with gas-cooler. The plant, driven by a 1.5kW CO2 semi hermetic compressor, uses brazed plate heat exchangers as condenser, evaporator and internal heat exchanger, an air finned tube gas-cooler and an electronic expansion valves. The evaluation (77 steady- states) covers evaporating temperatures from -40 to -25 oC and condensing temperatures from -15 to 0 oC, always at the nominal speed of the compressor. Here, the effect of the internal heat exchanger on the main energy parameters is analysed, i.e., cooling capacity, COP and heat rejection at gas-cooler and condenser. Also, the effect of the internal heat exchanger in a cascade cycle is analysed theoretically. It has been concluded that the internal heat exchanger does not improve the performance of the subcritical cycle, but it could improve the energy performance if it is used inside a cascade refrigeration system. [-]
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Applied Thermal Engineering (2015), v. 80, n. 5Rights
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info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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