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An integrated CO2 refrigeration facility is designed for hot climate conditions to improve the basic knowledge of the CO2 refrigeration in India, especially in the supermarket sector. The operational modes can be adapted to simulate different applications as well as the gas cooler outlet temperature can be regulated to simulate various ambient conditions. For Southern India, a parallel compression configuration with ejectors for expansion work recovery is the most efficient mode (mode 4). It can deliver freezing, refrigeration and air conditioning loads, and has a heat reclaim option. The different operation configurations help to understand the behavior of CO2 refrigeration for a wide range of applications as well as reveal the respective influences between components. A first test phase running mode 4 for an ambient temperature of 46°C and various receiver pressures in a range of 44 bar - 50bar, proves the feasibility of R744 transcritical systems as a non-HFC based alternative to HCFC-22 in retail applications in countries with high ambient temperature. The CO2 refrigeration test facility is a preparation and demonstration site for a full-scale replacement of existing commercial refrigeration installations in India.
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Details
- Original title: Environment-friendly refrigeration packs for Indian supermarkets: experimental investigation of energy performance of a multiejector-driven R744 integrated compressor rack.
- Record ID : 30023502
- Languages: English
- Source: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
- Publication date: 2018/06/18
- DOI: http://dx.doi.org/10.18462/iir.gl.2018.1136
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Indexing
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Themes:
CO2;
Supermarkets, display cabinets - Keywords: R744; Supermarket; India; Expérimentation; Testing; Transcritical cycle; CO2; Hot climate
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Thermodynamic Analysis of CO2 Transcritical Boo...
- Author(s) : PUROHIT N., GUPTA D. K., DASGUPTA M. S.
- Date : 2017/10
- Languages : English
- Source: Air Conditioning and Refrigeration Journal - vol. 20 - n. 4
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Current limits of CO2 compressors wo...
- Author(s) : NEBOT-ANDRÉS L., SÁNCHEZ D., CABELLO R., CALLEJA-ANTA D., FOSSI C., LLOPIS R.
- Date : 2021/09
- Languages : English
- Source: 12th International Conference on Compressors and their Systems
- Formats : PDF
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Thermodynamic analysis of CO2 trans-critical bo...
- Author(s) : PUROHIT N., GUPTA D. K., DASGUPTA M. S.
- Date : 2016/04/07
- Languages : English
- Source: 4th IIR International Conference on Sustainability and the Cold Chain. Proceedings: Auckland, New Zealand, April 7-9, 2016.
- Formats : PDF
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Supermarket application. Effects of sub-cooling...
- Author(s) : MAZZOLA D., SHEEHAN J., BORTOLUZZI D., et al.
- Date : 2016/08/21
- Languages : English
- Source: 12th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2016). Proceedings. Édimbourg, United Kingdom, August 21st-24th 2016.
- Formats : PDF
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Possible configurations of multiejector driven ...
- Author(s) : BLUST S., HAFNER A., BANASIAK K., et al.
- Date : 2018/06/18
- Languages : English
- Source: 13th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2018). Proceedings. Valencia, Spain, June 18-20th 2018.
- Formats : PDF
View record