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Evaporative cooling system with natural refrigerant at -50 ℃ and 100 m underground.
Number: 1149
Author(s) : BARROCA P., HAFNER A., PARDINAS A., VERLAAT B., ZWALINSKI L., HULEK W., PETAGNA P., HANF P., BATTISTIN M.
Summary
The cooling systems of the future tracking detectors of both ATLAS and CMS experiments at the Large Hadron Collider (LHC) at CERN will be entirely based on CO2 refrigeration technology. The system is a booster refrigeration system, composed of a two stage primary part with standard R744 equipment and a low temperature secondary loop i.e. pumped oil free CO2 is cooling the tracking detectors and condensed in the low stage evaporator. The primary refrigeration sub-system installed on surface provides cold R744 (close to triple point temperature of -53°C) to the CO2 pumped loops installed 100 m underground and rejects the heat exchanged. The process must be reliable and remain stable regardless the amount of heat exchanged, which is expected to vary throughout the lifetime of the detectors. This paper reviews alternative concepts in the design of evaporative cooling systems using natural refrigerants capable of overcoming the technical challenges.
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Evaporative cooling system with natural refrigerant at -50 ℃ and 100 m underground
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Details
- Original title: Evaporative cooling system with natural refrigerant at -50 ℃ and 100 m underground.
- Record ID : 30027945
- Languages: English
- Subject: Technology
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Publication date: 2020/12/07
- DOI: http://dx.doi.org/10.18462/iir.gl.2020.1149
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
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R744 cooling technology at ultra-low temperature.
- Author(s) : BLUST S., BARROCA P., HANF P., PETAGNA P., VERLAAT B., 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
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Performance and operation limits of a Remote Ul...
- Author(s) : BARROCA P., HAFNER A., KUCZYNSKI K., HANF P., VERLAAT B.
- 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
-
Development of pumped CO2 systems fo...
- Author(s) : VERLAAT B., PETAGNA P., ZWALINSKI L., DAGUIN J., GIAKOUMI D., BHANOT V., COLLOT J., LATIL S., POSTEMA H., TROPEA P., DAVOINE L., FERNANDEZ GARCIA M., HULEK W., SCHMID D.
- Date : 2020/12/07
- Languages : English
- Source: 14th IIR-Gustav Lorentzen Conference on Natural Refrigerants (GL2020). Proceedings. Kyoto, Japon, December 7-9th 2020.
- Formats : PDF
View record
-
CO2 refrigeration for the detectors ...
- Author(s) : PARDINAS A., BLUST S., VERLAAT B., HAFNER A.
- Date : 2020/11/11
- Languages : English
- Source: X Congreso Ibérico y VIII Congreso Iberoamericano de Ciencias y Técnicas del Frío, CYTEF 2020.
- Formats : PDF
View record
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R744 modular refrigeration technology at -50℃.
- Author(s) : BLUST S., BARROCA P. A. C., PETAGNA P., HANF P., 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
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