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| Content Provider | EDP Sciences |
|---|---|
| Author | A. Halouane M. David |
| Abstract | Le principal objectif de cet article est de présenter le fonctionnement des tubes à gaz pulsé (TGP) par une analogie électrique [1] où la tension et le courant représentent les paramètres hydrodynamiques pression P et débit massique m du système. Toute impédance peut être traitée comme un assemblage d'éléments électriques : résistance, capacitance ou inductance. À la source chaude du TGP, différents déphaseurs sont modélisés de la même manière et ainsi peuvent être comparés, comme l'orifice pulse tube refrigerator (OPTR) ou tube pulsé à simple orifice, le double inlet pulse tube refrigerator (DIPTR), le modified pulse tube refrigerator (MPTR) dont le déphaseur est un piston à la source chaude, le hybrid pulse tube refrigerator (HPTR) à ouverture séquentielles d'orifices, l'inertance in OPTR (IOPTR). En combinant cette analogie électrique avec l'étude thermique il est possible de prédire un bilan d'énergie à la source froide : puissance extraite, pertes du régénérateur, pertes du tube et influence des volumes morts. Différentes solutions peuvent être apportées au traitement de cette modélisation. Si les paramètres ne sont pas sinusoïdaux, le système peut être traité à un ordre supérieur à 1. Cette modélisation a été utilisée pour la conception du tube à gaz pulsé miniature qui travaille à des fréquences élevées 20-50 Hz et à des pressions supérieures à 20 MPa, construit en collaboration avec la société “Air Liquide”. Le compresseur (rotatif ou linéaire) de demi volume balayé ≈ 1 cm3 est du type utilisé sur les “Stirling”, il délivre une onde de pression quasi sinusoïdale. Sous 3 MPa de pression moyenne et une fréquence de 27,5 Hz, la température limite en mode double inlet est de 49 K avec une puissance disponible de 1 W à 84 K. |
| Ending Page | 35 |
| Starting Page | 31 |
| Page Count | 5 |
| File Format | HTM / HTML PDF |
| ISSN | 12860042 |
| Alternate Webpage(s) | https://www.epjap.org/articles/epjap/abs/1998/10/ap73205/ap73205.html |
| e-ISSN | 12860050 |
| Issue Number | 1 |
| Journal | The European Physical Journal Applied Physics |
| Volume Number | 4 |
| DOI | 10.1051/epjap:1998237 |
| Language | French |
| Publisher | EDP Sciences |
| Publisher Date | 1998-10-01 |
| Access Restriction | Subscribed |
| Rights Holder | © EDP Sciences, 1998 |
| Subject Keyword | Thermodynamic processes (phenomenology, experimental techniques) Heat transfer in inhomogeneous media, in porous media, and through interfaces |
| Content Type | Text |
| Resource Type | Article |
| Subject | Instrumentation Condensed Matter Physics Electronic, Optical and Magnetic Materials |
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