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R744 heat pumps with ejectors for heating and/or cooling: Opportunities, challenges, and results.
Number: 1177
Author(s) : SILVA A., JAVERSCHEK O., SIMON F.
Summary
R744 heat pump technology, incorporating ejectors, is becoming a key driver for decarbonization across various sectors requiring heating and/or cooling like hotels, hospitals, schools, theatres, food processing plants, aquariums, offices, industrial facilities, district heating/cooling, etc. Traditionally, these sectors relied on separate fossil fuel-powered heating systems and independent refrigeration units for cooling. The integration of R744 heat pumps with ejectors, along with thermal storage, enhances efficiency and enables
demand response capabilities, reducing energy consumption during peak demand periods. The inherent efficiency benefits of R744 heat pumps with ejectors present significant opportunities for sustainability, contributing to the global shift towards green energy. This paper outlines potential opportunities and challenges associated with deploying R744 heat pumps with ejectors in commercial and industrial settings. This paper also evaluates the energy efficiency of an existing R744 heat pump system without ejectors in a Mexico City hotel, providing an empirical comparison of the coefficient of performance (COP) with the same system equipped with ejectors. Additionally, this study presents test results from an R744 heat pump with ejectors located at the Schaufler Academy in Germany.
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Details
- Original title: R744 heat pumps with ejectors for heating and/or cooling: Opportunities, challenges, and results.
- Record ID : 30032695
- Languages: English
- Subject: Technology
- Source: 16th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2024). Proceedings. University of Maryland, College Park, Maryland, USA, August 11-14 2024
- Publication date: 2024/08
- DOI: http://dx.doi.org/10.18462/iir.gl2024.1177
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Indexing
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Experimental study of steam-driven ejector heat...
- Author(s) : SPITZENBERGER J., MOHAMMED R. H., WANG P., MA H., ABU-HEIBA A., KOWALSKI S., NAWAZ K.
- Date : 2023/05
- Languages : English
- Source: 14th IEA Heat Pump Conference 2023, Chicago, Illinois.
- Formats : PDF
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CO2 installations with a multi ejector for supe...
- Author(s) : FREDSLUND K, KRIEZI E. E., MADSEN K. B., 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
View record
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Exploration of heat-driven ejector high-tempera...
- Author(s) : WANG P., KOWALSKI S., YANG C.-M., SUN J., GAO Z., NAWAZ K.
- Date : 2023/05
- Languages : English
- Source: 14th IEA Heat Pump Conference 2023, Chicago, Illinois.
- Formats : PDF
View record
-
Performance analysis of high-temperature heat p...
- Author(s) : WANG P., KOWALSKI S., YANG C.-M., SUN J., GAO Z., NAWAZ K.
- Date : 2023/05
- Languages : English
- Source: 14th IEA Heat Pump Conference 2023, Chicago, Illinois.
- Formats : PDF
View record
-
Thermodynamic modelling of two-phase R-744 ejec...
- Author(s) : KRIEZI E. E., KANBUR B. B., MARKUSSEN W. B.
- 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
View record