• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Cryogenic Optical Systems and Instruments X; Aug 6, 2003; San Diego, California, USA >Large Area Cryocooling for Far Infrared Telescopes
【24h】

Large Area Cryocooling for Far Infrared Telescopes

机译：远红外望远镜的大面积低温冷却

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Requirements for cryocooling of large-area heat sources begin to appear in studies of future space missions. Examples are the cooling of (i) the entire structure/mirror of large Far Infrared space telescopes to 4-40K and (ii) cryogenic thermal bus to maintain High Temperature Superconductor electronics to below 75K. The cryocooling system must provide robust/reliable operation and not cause significant vibration to the optical components. But perhaps the most challenging aspect of the system design is the removal of waste heat over a very large area. A cryogenic Loop Heat Pipe (C-LHP)/ cryocooler cooling system was developed with the ultimate goal of meeting the aforementioned requirements. In the proposed cooling concept, the C-LHP collected waste heat from a large-area heat source and then transported it to the cryocooler coldfinger for rejection. A proof-of-concept C-LHP test loop was constructed and performance tested in a vacuum chamber to demonstrate the feasibility of the proposed C-LHP to distribute the cryocooler cooling power over a large area. The test loop was designed to operate with any cryogenic working fluid such as Oxygen/Nitrogen (60-120K), Neon (28-40K), Hydrogen (18-30K), and Helium (2.5-4.5K). Preliminary test results indicated that the test loop had a cooling capacity of 4.2W in the 30-40K temperature range with Neon as the working fluid.
机译：大面积热源冷冻冷却的要求开始出现在对未来太空任务的研究中。例如：将（i）大型远红外太空望远镜的整个结构/镜冷却至4-40K，以及（ii）低温热总线，以将高温超导体电子设备保持在75K以下。低温冷却系统必须提供坚固/可靠的操作，并且不会对光学组件造成明显的振动。但是，系统设计中最具挑战性的方面可能是在很大的区域内消除废热。开发了低温回路热管（C-LHP）/低温冷却器冷却系统，其最终目标是满足上述要求。在提出的冷却概念中，C-LHP从一个大面积的热源收集废热，然后将其传输到低温冷却器的冷指中进行剔除。构建了概念验证的C-LHP测试回路，并在真空室内进行了性能测试，以证明所建议的C-LHP在大面积上分配低温冷却器冷却功率的可行性。该测试回路设计为可与任何低温工作流体配合使用，例如氧气/氮气（60-120K），氖气（28-40K），氢气（18-30K）和氦气（2.5-4.5K）。初步测试结果表明，在以Neon为工作流体的情况下，该测试回路在30-40K温度范围内的冷却能力为4.2W。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号