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ENERGETIC AND EXERGETIC ANALYSES OF CARBON DIOXIDE TRANSCRITICAL REFRIGERATION SYSTEMS FOR HOT CLIMATES

ABSTRACT
In the last two decades many scientific papers and reports have been published in the field of the application of the carbon dioxide as a refrigerant for refrigeration systems and heat pumps. Special attention has been paid to the transcritical cycle. However, almost no papers discussed such cycles for hot climates, i.e., when the temperature of the environment is higher than 40ºС during a long period of time. This paper deals with the energetic and exergetic evaluation of a CO2 refrigeration system operating in a transcritical cycle under hot climatic conditions. The performance and exergy efficiency of the CO2 refrigeration system depend on the operation conditions. The effect of varying these conditions is also investigated as well as the limitations associated with these conditions.
KEYWORDS
PAPER SUBMITTED: 2012-10-07
PAPER REVISED: 2013-02-02
PAPER ACCEPTED: 2013-02-04
PUBLISHED ONLINE: 2013-04-13
DOI REFERENCE: https://doi.org/10.2298/TSCI121007026F
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE 3, PAGES [905 - 914]
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