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A novel technology to adapt transcritical R744 supermarket refrigeration systems to rising temperatures.
Number: 1131
Author(s) : GULLO P., KORSHIDI V., FUNDER-KRISTENSEN T., GURUCHETHAN A. M., MORID ZADEH M., FOLIACO B.
Summary
In this work a novel technology to adapt transcritical R744 supermarket refrigeration systems to warm and hot climates as well as to rising temperatures was proposed and exhaustively investigated. The novel solution consisted of a booster device (increasing the transcritical fluid R744 pressure) followed by an air-cooled gas cooler and located between the conventional air-cooled condenser/gas cooler and high-pressure expansion valve. The results obtained revealed energy savings by from 2.31 % to 2.91 % in Seville (Spain) and from 4.64 % to 5.73 % in New Delhi (India). To further increase the energy benefits from the proposed technology, the use of an expander replacing the high-pressure expansion valve was also considered. As a consequence, energy savings by 7.80 % in Seville and 14.44 % in New Delhi with an additional investment recovery time of about 3 years in both of the selected locations were assessed.
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Details
- Original title: A novel technology to adapt transcritical R744 supermarket refrigeration systems to rising temperatures.
- Record ID : 30034180
- Languages: English
- Subject: Technology
- Source: 1st IIR International Conference on Refrigeration Adapting to Rising Temperatures
- Publication date: 2025/08
- DOI: http://dx.doi.org/10.18462/iir.adaptation.2024.1131
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Indexing
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Themes:
CO2;
Supermarkets, display cabinets - Keywords: R744; Supermarket; COP; Air cooler; Expansion valve
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