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R744-based integrated heat pump and chiller system for hotels in tropical climates.
Number: 1168
Author(s) : KOCHUNNI S. K., SHARMA K., HAFNER A.
Summary
Hotels in India typically rely on synthetic refrigerant-based chillers for space cooling and diesel-fired water heaters for hot water production—both energy-intensive solutions that contribute significantly to global warming. Transitioning to natural refrigerants like CO2 is a promising alternative, but this shift faces several challenges in India, including high ambient temperatures, limited technical expertise, resistance to adopting new technologies, and a shortage of skilled professionals. Demonstrating the real-world performance of such systems is essential to overcoming these barriers. This paper presents and discusses the first set of field data from a CO2 heat pump recently implemented in a hotel located in a tropical region of India. The system successfully met its design goals, producing hot water at 80 °C while simultaneously providing chilled glycol-water at 2 °C. The results indicate that CO2 based systems can effectively meet both heating and cooling demands in warmer climates, offering a sustainable alternative for the hospitality industry.
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Details
- Original title: R744-based integrated heat pump and chiller system for hotels in tropical climates.
- Record ID : 30034201
- 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.2024.1168
Links
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Indexing
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Themes:
CO2;
Comfort air conditioning;
Commercial heat pumps - Keywords: R744; Heat pump; Hotel; Tropical climate; India
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Integrated R744 heat pump/chiller for hotel: st...
- Author(s) : SINGH S., HAFNER A., ELARGA H., SHARMA K.
- Date : 2023/08/21
- Languages : English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Formats : PDF
View record
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CO2 heat pump/chiller system for a h...
- Author(s) : ELARGA H., HAFNER A.
- Date : 2022/06/13
- Languages : English
- Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
- Formats : PDF
View record
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Energy analysis of a combined heating and cooli...
- Author(s) : CARLI M. de, CAPPON F., PRENDIN L., et al.
- Date : 2011/04/05
- Languages : English
- Source: Sources/sinks Alternative to the Outside Air for Heat Pump and Air-conditioning Techniques (Alternative Sources - AS), Padua, Italy, April 5-7, 2011. / International Sorption Heat Pump Conference (ISHPC11), Padua, Italy, April 6-8, 2011.
- Formats : PDF
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Presentation of the first combined CO2 heat pum...
- Author(s) : SMITT S. M., HAFNER A., HOKSROD E.
- Date : 2019/04/11
- Languages : English
- Source: 8th Conference on Ammonia and CO2 Refrigeration Technology. Proceedings: Ohrid, North Macedonia, Avril 11-13, 2019.
- Formats : PDF
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Field data of a R744 unit satisfying thermal re...
- Author(s) : MINETTO S., FABRIS F., MARINETTI S., BISETTO L., GIROTTO S., ROSSETTI A.
- Date : 2024/08
- Languages : English
- Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
- Formats : PDF
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