Skip to Main content Skip to Navigation
Theses

Développement d'un tube à gaz pulsé très haute fréquences

Abstract : Pulse Tubes are a kind of cryocoolers similar to Stirling refrigerators, apart from the cold mobile element, absent in the first, which lessens their exported vibrations and increases their reliability. Spatial applications seek these characteristics for the instruments embarked, along with small weight and size. These needs stimulate the research on pulse tube miniaturization; to achieve this reduction, one can decrease the swept volume per cycle, whilst increasing the frequency of operation. To understand the barriers to carry out very high frequency operation, simulations on the behavior of the regenerator and inertances were made, as well as an experimental study on the thermal losses of the expansion tube. Finally, several very high frequency pulse tube prototypes were built and benchmarked, one of which fulfills the requirements we had initially set : 0.25 W at 120 K, with 20 W of input power at 100 Hz.
Document type :
Theses
Complete list of metadatas

Cited literature [20 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00635389
Contributor : Abes Star :  Contact
Submitted on : Tuesday, October 25, 2011 - 11:17:27 AM
Last modification on : Thursday, June 11, 2020 - 5:04:06 PM
Long-term archiving on: : Thursday, January 26, 2012 - 2:43:20 PM

File

24547_CARVALHO_-_LOPES_2011_ar...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00635389, version 1

Collections

STAR | CEA | DRT | LETI | CEA-GRE

Citation

Diogo Carvalho Lopes. Développement d'un tube à gaz pulsé très haute fréquences. Autre. Université de Grenoble, 2011. Français. ⟨NNT : 2011GRENI044⟩. ⟨tel-00635389⟩

Share

Metrics

Record views

1020

Files downloads

1431