A new approach for measurement of the low-temperature specific heat capacity

被引：7

作者：

Jiao, Y. ^{[1
,2
]}

Liu, C. F. ^{[1
,2
]}

Cui, X. P. ^{[1
,2
]}

Zhang, J. ^{[1
,2
]}

Huang, L. J. ^{[2
]}

Geng, L. ^{[2
]}

机构：

[1] Harbin Inst Technol, Ctr Anal Measurement & Comp, Harbin 150001, Peoples R China

[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

来源：

MEASUREMENT | 2022年 / 203卷

基金：

中国国家自然科学基金;

关键词：

Simultaneous thermal analyzer; Low-temperature furnace; Low-temperature specific heat capacity; Low-temperature differential scanning calorimetry;

D O I：

10.1016/j.measurement.2022.111892

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The manuscript presented the application of simultaneous thermal analyzer (STA449F3) at low-temperature Differential Scanning Calorimetry (DSC) and specific heat capacity tests. Moreover, some problems were found during the specific heat capacity measurement. The STA449F3 instrument can provide accurate charac-teristic temperature and enthalpy values calculation. However, the specific heat capacity deviation increased gradually when temperature increased above room-temperature. The liquid nitrogen cooling way led to nonlinear change of temperature with time during increasing, decreasing and holding temperature process, and larger deviation of low-temperature specific heat capacity. Three ways were adopted to measure the specific heat capacity from below zero to above room-temperature. The error between the studied and reference values was greatly reduced via creating a non-liquid nitrogen cooling environment.

引用

页数：6

共 21 条

[1] Paraffin-graphene oxide hybrid nano emulsions for thermal management systems [J].