计量学报2009，Vol.30Issue(6)：489-492,4.DOI:10.3969/j.issn.1000-1158.2009.06.01
高精度钠热管固定点炉及其等温特性
High Precise Sodium Heat-Pipe Fixed Point Furnaces and Their Isothermal Characteristics
摘要
Abstract
Two sodium heat-pipe fixed point furnaces (SHPF-1, SHPF-2) developed at the National Institute of Metrology (NIM) are described, and their vertical temperature uniformities are measured. When the temperatures of the these two furnaces are controlled about 2 ℃ and 3 ℃ respectively, below the freezing point of the aluminum, the largest temperature differences did not exceed 15 mK and 11 mK in a distance about 150mm along the reentrant well of the aluminum point cell, respectively. These temperature uniformities are compared with those of foreign similar sodium heat pipe furnaces. Additionally, factors influencing isothermal characteristics of fixed point furnaces are analyzed.关键词
计量学/钠热管炉/等温特性/铝凝固点/温度均匀性Key words
Metrology/ Sodium heat-pipe furnace/ Isothermal characteristics/ Aluminum freezing point/ Temperature Uniformity分类
通用工业技术引用本文复制引用
闫小克,吕卓凡,马重芳,李杰,段宇宁..高精度钠热管固定点炉及其等温特性[J].计量学报,2009,30(6):489-492,4.基金项目
国家科技部科技平台项目(2005DKA10705) （2005DKA10705）
