1. Key Laboratory of Thermo-Fluid Science and Engineering of MOE, Xi'an Jiaotong University,Xi’an, Shaanxi, 710049, China;
2. Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Qinghai 810008, China
Abstract：In order to study the apparent molar heat capacity of the dilute solution, a Picker-type flow calorimeter for specific heat capacity measurement based on the differential method is developed. It has a symmetrical dual-cell structure, with one tube serves as working cell and the other serves as reference cell. Using water as the reference fluid, the ratio of specific heat capacity of the sample and reference fluid is obtained by adjusting the balance of the temperature measurement bridge before and after the injection. The system is designed to operate at temperatures 278K to 343K and atmospheric pressure. The verification experiment is carried out using aqueous sodium chloride (NaCl) and the average relative deviation between the experimental data and the literature values is within 1%, which showed that the system is of good reliability and high accuracy.
归凌燕,孟现阳,李东东,吴江涛. 基于流动法的Picker型比热容测量系统研究[J]. 计量学报, 2023, 44(4): 495-502.
GUI Ling-yan,MENG Xian-yang,LI Dong-dong,WU Jiang-tao. Development of Picker-type Calorimeter for Specific Heat Capacity Measurement Based on Flow Method. Acta Metrologica Sinica, 2023, 44(4): 495-502.
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2023, Vol. 44 
