Abstract
Vibration-free miniature Joule-Thomson (JT) coolers are of interest for cooling small optical detectors for future space missions. The European Space Agency is interested in on-chip detector cooling for the temperature range 70¶K¶-¶250¶K. This is the topic of a new project at the University of Twente. In this project, the focus is on the integration of Micro-Electro-Mechanical Systems (MEMS) based JT coolers with small detectors for space applications. Furthermore, distributed micro cooling will be investigated, which means that multiple cold tips will be driven by a single compressor. The progress of this project is discussed in this paper. The application of JT coolers in the temperature range 70¶K¶-¶250¶K is investigated. The working fluid in a JT cold stage is optimized on basis of the thermodynamical properties of the fluid. The results of this optimization are discussed. Furthermore, a static model of the counter flow heat exchanger is built, in order to simulate the performance of a micro JT cold stage. The results of the simulations are compared with experimental data.
| Original language | English |
|---|---|
| Title of host publication | Cryocoolers 15 |
| Editors | Saul D. Miller, Ronald G. Ross, Jr. |
| Place of Publication | Boulder, CO |
| Publisher | ICC Press |
| Pages | 405-413 |
| ISBN (Print) | 978-1-934021-01-9 |
| Publication status | Published - 2009 |
| Event | 15th International Cryocooler Conference, Cryocoolers-15 2008 - Long Beach, United States Duration: 9 Jun 2008 → 12 Jun 2008 Conference number: 15 |
Publication series
| Name | International Cryocooler Conference |
|---|---|
| Publisher | ICC Press |
| Volume | 15 |
| ISSN (Print) | 1549-1757 |
Conference
| Conference | 15th International Cryocooler Conference, Cryocoolers-15 2008 |
|---|---|
| Abbreviated title | Cryocoolers |
| Country/Territory | United States |
| City | Long Beach |
| Period | 9/06/08 → 12/06/08 |