【摘要】 采用微型全动压气体轴承透平机械和金属紧凑式换热器的空间逆布雷顿循环制冷机 ,可获得 10 K～ 70 K温度级 1～ 5 W的冷量 ,是空间应用领域内热力循环性能系数最好的制冷机之一。而且具有无振动、长寿命的优点。通过对逆布雷顿循环制冷机系统和部件的改进 ,还可实现 4 .2 K～ 10 K温度下 m W级的冷量。文中主要分析了单级逆布雷顿循环制冷机的系统及主要部件 ,并对实现更低温度级的双级逆布雷顿循环制冷机作了简单介绍更多还原

【Abstract】 Mechanical cryocooler based on the Turbo Reverse-Brayton Cycle (TRBC) has been developed for space applications until recently. Low Temperature Reverse Brayton Cryocooler (LTRBC) employs miniature high-speed turbo-machinery with self-acting gas bearings and compact metal heat exchangers as the main components to provide high cycle efficiency and reliability. Single stage LTRBC can provide a cooling load of 1～5W at the temperature between 10K～70K. Negligible vibration and long life (>5 years) are the favorite features of LTRBC. Through the improvements of the key elements, LTRBC can achieve the cooling load of 10 -3 ～10 -1 W at the temperature between 4.2K～10K. The important characteristics of the key components and the development of LTRBC technology are discussed in this paper.更多还原