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Performance and operation limits of a Remote Ultra-Low Temperature R744 transcritical chiller.
Number: 0429
Author(s) : BARROCA P., HAFNER A., KUCZYNSKI K., HANF P., VERLAAT B.
Summary
The ATLAS and CMS experiments connected for the first time their ultra-low temperature R744 chiller concept to a remote evaporator installed in the ATLAS services’ cavern. With around 300 m long connection between the chiller installed on surface and the evaporator installed 85 m underground, it is of main importance to assess the system’s oil management and transient responsiveness, before launching the production of the final refrigeration units.
The experimental data collected reports the overall steady and transient cooling performance and the limits of operation imposed by the layout and system’s design. The results highlight the favourable properties of R744 for distant remote cooling applications at ultra-low temperatures.
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Details
- Original title: Performance and operation limits of a Remote Ultra-Low Temperature R744 transcritical chiller.
- Record ID : 30031798
- Languages: English
- Subject: Technology
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Publication date: 2023/08/21
- DOI: http://dx.doi.org/10.18462/iir.icr.2023.0429
Links
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See the conference proceedings
Indexing
-
Themes:
CO2;
Chillers;
Other industrial applications - Keywords: R744; CO2; Performance; Transcritical cycle; Accelerator; Chiller; Low temperature; Design; Particle detector
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- Date : 2023/08/21
- Languages : English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Formats : PDF
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- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
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- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
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