【摘要】 <正> 一、前言 在蒸汽管道上应用高效保温材料隔热,热物性数据不仅是评价和筛选保温材料的主要技术依据,也是对蒸汽管道保温技术进行优化设计的关键参数。但是,国内蒸汽管道所用的各种保温材料还缺乏比热和导温系数的完整数据;导热系数数据由于缺乏标样或者很少用不同仪器对同一试样进行互校,因而各单位测试结果有时不能很好吻合。为此,本文对管道上常用的新型的保温材料,进行了热物性的测试研究,给出了完整的热物性数据及其方程,并从理论上分析了导热系数曲线变化的规律。更多还原

【Abstract】 The thermal conductivity, specific heat and thermal diffusivity of four new thermal insulation materials for vapour tube were examined systematically by differental measurement apparatus, and consequently the thermophysical properties equations were provided. According to microscope theories of heat conduction, theoretical analysis of heat conduction behavior of the thermal insulation materials was studied.更多还原