A one kPa centrifugal cold compressor for the 1.8 K helium refrigeration system of LHC

CERN placed an order for a cold compressor prototype (CCP) with IHI for the LHC project. The CCP is supported by the oil-free magnetic bearings, driven by an induction motor. The compressor has the characteristics of high efficiency and wide operation range, thanks to the optimum design for the impe...

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Detalles Bibliográficos
Autores principales: Saji, N, Asakura, H, Yoshinaga, S, Itoh, K, Nogaku, T, Bézaguet, Alain-Arthur, Casas-Cubillos, J, Lebrun, P, Tavian, L
Lenguaje:eng
Publicado: 1998
Materias:
Engineering
Acceso en línea:http://cds.cern.ch/record/428131
Descripción
Sumario:CERN placed an order for a cold compressor prototype (CCP) with IHI for the LHC project. The CCP is supported by the oil-free magnetic bearings, driven by an induction motor. The compressor has the characteristics of high efficiency and wide operation range, thanks to the optimum design for the impeller and diffuser. The result of the performance tests at CERN showed that static heat in-leaks could be controlled at approx. 7.3 W, and an adiabatic efficiency is 75at a nominal flow of 18 g's with suction temperature of 4.4 K and suction pressure of 1 kPa. (4 refs).

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