摘要
基于恒温边界一维非稳态传热模型,根据GUM(测量不确定度表示与指南)中A类、B类、合成标准不确定度及扩展不确定度4种不确定度,对松散煤的热扩散率测试系统进行不确定度分析。结果表明:影响参数结果的不确定因素主要有温度、时间、重复测量、试样厚度。降低测试结果的不确定度,应考虑降低这些参数的不确定度。
Based on constant temperature boundary one dimensional unsteady heat transfer mode, according to the GUM department （measurement uncertainty representation and guide） in class A and class B, synthesis standard uncertainty and expanded uncertainty four kinds of uncertainty, loose coal＇s thermal diffusivity uncertainty was analyzed. The results showed that the uncertain factors affecting parameters results mainly include temperature, time, repeated measurement, the thickness of the specimen. To reduce the uncertainty of test results, should consider reducing the uncertainty of these parameters.
出处
《煤炭技术》
CAS
北大核心
2016年第1期210-212,共3页
Coal Technology
基金
安徽省自然科学基金项目(1408085ME107)
安徽省高校优秀青年基金重点项目(2011SQRL041ZD)
