中温固体比热容测量基准的研究进展

Research Progress of Primary Heat Capacity Standard for Medium Temperature

中温固体比热容测量基准装置是保证比热容、相变温度、相变焓等量值溯源的核心。装置主要采用绝热量热方法,实现量值结果溯源至SI单位。介绍了比热容装置的研究意义与测量原理,分析了其在该领域的研究状况,在此基础上提出了我国中温固体比热容测量基准装置的新方案和总体设计。

The primary heat capacity standard for medium temperature is employed for the traceability of the specific heat capacity, phase transition temperature and enthalpy. The device mainly adopts the adiabatic calorimetric method, which makes the calorific value traceable to SI units. Firstly, the research significance and the principle of primary heat capacity standard is introduced, and then the progress on the research in the field is demonstrated. Finally new design and scheme of primary heat capacity standard based on this work are put forward.