Experimental study on isobaric specific heat capacity of subcritical and supercritical fluids using flow calorimetry

被引：0
作者：
Han R. [1 ]
Yang Z. [1 ]
Yang S. [1 ]
Zhang B. [1 ]
机构：
[1] Key Laboratory of Complex Energy Conversion and Utilization, Liaoning Province, School of Energy and Power Engineering, Dalian University of Technology, Dalian
来源：
Measurement: Sensors | 2020年 / 10-12卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Carbon dioxide; Flow calorimeter; Isobaric specific heat capacity; Measurement; Supercritical;
D O I：
10.1016/j.measen.2020.100016
中图分类号：
学科分类号：
摘要：
Accurate measurement of isobaric specific heat capacity of supercritical fluids is essential for many scientific researches and engineering applications. Based on the flow calorimetry method, an online experiment system for measuring isobaric specific heat capacity for subcritical and supercritical fluids was established. The relative expanded uncertainty of isobaric specific heat capacity was estimated to 2.44%–2.70% (coverage factor k ​= ​2). Based on the verification of the reliability of the measurement system by using pure water, cyclohexane and pentane, the isobaric specific heat capacity of carbon dioxide (CO2) in the temperatures range of (25.0–60.0) °C and pressures range of (6.7–12.0) MPa was measured. The experiment platform can provide accurate data measurement support for further scientific investigations and engineering designs. © 2020 The Author(s)
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