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State-of-the-Art Integrated CO2 Refrigeration System for Supermarkets: a Comparative Analysis
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-2895-774X
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
2018 (English)In: International journal of refrigeration, ISSN 0140-7007, E-ISSN 1879-2081, Vol. 86, p. 239-257Article in journal (Refereed) Published
Abstract [en]

This paper investigates the integrated and state-of-the art features of CO2 trans-critical booster systems. The main objective is to identify the most promising solutions in terms of energy efficiency impacts.

 

First, the performance of modified features and integrated functions have been compared with the standard CO2 system and alternative heating and air conditioning solutions. Subsequently, the performance of the defined state-of-the-art CO2 system is compared to natural refrigerant-based cascade and HFC/HFO-based DX and indirect refrigeration solutions operating in cold and warm climates.

 

The results indicate that two-stage heat recovery, flooded evaporation, parallel compression and integration of air conditioning are the most promising features of the state-of-the-art integrated CO2 system. This compact and environmentally friendly system is the most energy efficient solution in cold climates, and is also an efficient solution in warm climates, with comparable efficiency to cascade and HFC/HFO DX systems, but with no existing or potential limitations.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 86, p. 239-257
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
URN: urn:nbn:se:kth:diva-217381DOI: 10.1016/j.ijrefrig.2017.11.006ISI: 000424803400024Scopus ID: 2-s2.0-85039740840OAI: oai:DiVA.org:kth-217381DiVA, id: diva2:1156178
Projects
Effsys Expand
Funder
Swedish Energy Agency, 40338-1
Note

QC 20180110

Available from: 2017-11-10 Created: 2017-11-10 Last updated: 2018-03-05Bibliographically approved

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