Baseline design of a sorption-based Joule-Thomson cooler chain for the METIS instrument in the E-ELT

被引：13
|
作者：
Wu, Y. [1 ,2 ]
Zalewski, D. R. [3 ]
Vermeer, C. H. [4 ]
Holland, H. J. [2 ]
Benthem, B. [5 ]
ter Brake, H. J. M. [2 ]
机构：
[1] Zhejiang Univ, Inst Proc Equipment, Zheda Rd 38, Hangzhou, Zhejiang, Peoples R China
[2] Univ Twente, Fac Sci & Technol, Drienerlolaan 5, NL-7522 NB Enschede, Netherlands
[3] Kryoz Technol BV, Inst Weg 25, NL-7521 PH Enschede, Netherlands
[4] SuperACT, Marterstr 66, NL-7559 AJ Hengelo, Netherlands
[5] Airbus Def & Space Netherlands BV, POB 32070, NL-2303 DB Leiden, Netherlands
来源：
CRYOGENICS | 2017年 / 84卷
关键词：
Vibration free; Sorption compressor; Joule-Thomson cooler; E-ELT; METIS; Heat switch; WORKING FLUID; OPTIMIZATION;
D O I：
10.1016/j.cryogenics.2017.04.003
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
METIS, the Mid-Infrared E-ELT Imager and Spectrograph, is one of the proposed instruments in E-ELT (European Extremely Large Telescope). Its infrared detectors require multiple operating temperatures below 77 K. Therefore, active coolers have to be deployed to provide sub-liquid-nitrogen (sub-LN2) temperature cooling. However, the sensitive imaging optical detecting system also demands very low levels of vibration. Thus, the University of Twente proposed a vibration-free cooling technique based on physical sorption. In this paper, we describe the baseline design of such a sorption-based Joule-Thomson cooler chain for the METIS instrument, that is able to deliver cooling powers of 0.4 W at 8 K, 1.1 W at 25 K and 1.4 W at 40 K from a 70-K heat sinking. This design is based on working fluid selection, cascading cooler stages and operating parameter optimization. Also, the performance of the resulting cooler design is analyzed. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：37 / 52
页数：16
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