Share Recommended by the IIR / 
IIR document
Performance study of desiccant enhanced ejector-based transcritical CO2 heat pump technology for high-efficiency space cooling.
Number: 0156
Author(s) : KOUNDINYA S., SESHADRI S.
Summary
Dehumidifying air in building ventilation systems is an essential requirement to improve thermal comfort for the occupants. In humid conditions, the removal of moisture is very energy-intensive. It does not benefit much from current advancements such as inverter systems, as these are very effective mainly for sensible cooling. Desiccant cooling systems with natural gas-fired boilers for regeneration are inefficient and are moving away from CO2 reduction efforts. In this paper, the performance of the hybrid cooling system (HCS), HCS with trans-critical CO2, HCS with ejector-based CO2, and HCS with 90 ℃ heat pumps are computed and compared with the conventional vapour compression system (VCS) for a total cooling load (sensible and latent) of 9.25 KW. HCS with ejector-based CO2 heat pump system was found to be the best, and the system COP was 68.9% more, and the CO2 emissions were reduced by 41% compared to VCS.
Available documents
Format PDF
Pages: 9 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Performance study of desiccant enhanced ejector-based transcritical CO2 heat pump technology for high-efficiency space cooling.
- Record ID : 30029748
- Languages: English
- Subject: Technology
- Source: 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2022). Proceedings. Trondheim, Norway, June 13-15th 2022.
- Publication date: 2022/06/13
- DOI: http://dx.doi.org/10.18462/iir.gl2022.0156
- Document available for consultation in the library of the IIR headquarters only.
Links
See other articles from the proceedings (169)
See the conference proceedings
Indexing
-
Themes:
Humidification/dehumidification equipment;
Ejector systems, air cycle, Stirling cycle, other cycles);
Energy efficiency, energy savings;
CO2 - Keywords: Desiccant system; Dehumidification; Ejector system; COP; Energy efficiency; Performance; Air conditioning; CO2; R744; Heat pump; Modelling; Hybrid system; Energy saving; Transcritical cycle
-
Simultaneous implementation of rotary pressure ...
- Author(s) : SAEED M. Z., HAFNER A., THATTE A., GABRIELII C. H.
- 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
-
Financial aspects of ejector solutions in super...
- Author(s) : MADSEN K. B., KRIEZI E. E.
- 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
-
Evaluation of various subcooling techniques in ...
- Author(s) : VAISHAK S., SINGHA P., DASGUPTA M. S., BHATTACHARYYA B., SINGH S., HAFNER A.
- 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
-
Theoretical analysis of the optimal ejector ope...
- Author(s) : METSUE A., NESREDDINE H., PONCET S., BARTOSIEWICZ Y.
- 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
-
Investigation of CO2 refrigeration s...
- Author(s) : ANDERSEN H., SAEED M. Z., HAFNER A., GABRIELII C.
- Date : 2023/04/27
- Languages : English
- Source: 10th IIR Conference on Ammonia and CO2 Refrigeration Technologies.
- Formats : PDF
View record