制冷学报2011，Vol.32Issue(3)：53-55,59,4.DOI:10.3969/j.issn.0253-4339.2011.03.053
低温显微镜新冷源系统的实验研究
Experimental Study on a New Low-temperature System for Cryomicroscope
摘要
Abstract
A new scheme, which takes nitrogen as a cold source and utilizes a micro-throttle refrigerator to cool the nitrogen, is presented for satisfying the temperature-drop demands of cryomicroscope. An elementary diagram of cryo-microscope's novel cold source system is given. To determine the parameters of throttle tubes (internal diameter and length), the optimum throttling pressure, temperature drop, the refrigerating capacity and nitrogen consumption, three experiments was conducted. The results show that the internal diameter and length of the throttle tubes made by stainless steel should be 0.3mm and 10mm respectively. Meanwhile, the optimum pressure before throttling is 7Mpa. The temperature drop, the refrigerating capacity and the nitrogen consumption of this system all satisfy the requirement of the system.关键词
热工学/低温显微镜/节流制冷器/冷源系统Key words
Pyrology/Cryo-microscope/Micro-throttle refrigeratorjLow-temperature system分类
机械制造引用本文复制引用
李巧巧,陈儿同,左志强,杨晓芸,张华,徐文强..低温显微镜新冷源系统的实验研究[J].制冷学报,2011,32(3):53-55,59,4.基金项目
本文受上海市重点学科建设(S30503)项目资助. （S30503）
