Application of indirect circulation loops with carbon dioxide in refrigeration cycles
DOI:
https://doi.org/10.36119/15.2022.5.5Keywords:
circulation loop, carbon dioxide, indirect cooling systems, flow resistance, two-phase flowsAbstract
The paper provides with a review of indirect cooling systems with a circulation loop with carbon dioxide as a working fluid. A technical solution was also proposed, consisting in coupling a propane compressor cooling system unit with a two-phase CO2 loop. A general calculation approach was presented for the flow resistance occurring in the installation because of the prepared maps of two-phase flow patterns in the horizontal and vertical channels. The focus of the calculations was to determine the appropriate height of the liquid column to enable proper operation of the system. The paper is an introduction to the currently undertaken development works on innovative solutions of indirect refrigeration systems for commercial refrigeration.
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References
Javerschek O., Zastosowanie CO2 w supermarketach, Chłodnictwo i Klimatyzacja, 2009, Vol. 8, s. 30-37
Zhang T., Experimental Study on a Forced Circulation Loop Thermosiphon Solar Water Heating System, International Journal of Pho- toenergy, 2018, Vol. 4, s. 1-12
Yamaguchi H., Sawada N., Suzuki H., Ueda H., Zhang X.R., Preliminary study on a solar water heater using supercritical carbon dioxide as working fluid, Journal of Solar Energy Engineering, 2010, Vol.132
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Authors retain copyright and grant the journal the right of first publication, with the work simultaneously licensed under a Creative Commons Attribution 4.0 International License, which permits others to share the work with appropriate acknowledgment of the authorship and initial publication in this journal.
