The Development of the Flow Liquid Heat Capacity Experiment System
ZHENG Yu-xin1,2,WEI Zhao-hui1,LI Jie1
1. School of Energy and Architecture, Xi’an Aeronautical University, Xi’an, Shaanxi 710077, China
2. School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710045, China
Abstract：The flow liquid heat capacity experiment system was developed to measure heat capacity in the high temperature and high pressure range. The experiment system contained flow calorimeter, the electric heating system, the inside and outside two adiabatic shields. The temperature range of the apparatus was from 293 K to 453 K, and the pressure range was 0.1~20 MPa. Firstly, the pure water was adopted to calibrate coefficient of heat leakage, then, the toluene and cyclohexane were used to test the accuracy and reliability of the system at different temperatures and pressures. Through the uncertainty analysis, the expanded uncertainty of the experimental apparatus was less than 1.41%( k=2).
［1］Bier K, Ernst G, Kunze J, et al. Thermodynamic properties of propylene from calorimetric measurements［J］. Journal of Chemical Thermodynamics,1974,6 (11):1039-1052.
［2］Bier K, Ernst G, Maurer G. Flow apparatus for measuring heat-capacity and joule-thomson coefficient of gases［J］. Journal of Chemical Thermodynamics,1974,6 (11):1027-1037.
［3］Ernst G, Hochberg U E. Flow-calorimetric results for the specific-heat capacity cp of CO2, of C2H6, and of (0.5 CO2+0.5 C2H6) at high-pressures［J］. Journal of Chemical Thermodynamics,1989,21 (4): 407-414.
［4］Soitoh A, Sato H, Watanabe K . A new apparatus for measurement of the isobaric heat capacity of liquid refrigerants［J］. International Journal of T hermophysics,1989,10(3):649-659.
［5］Mulia K, Yesavage V F. Isobaric heat capacity measurements for the n-pentane-acetone and the methanol-acetone mixtures at elevated temperatures and pressures［J］. Fluid Phase Equilibria,1999, s158-160(5):1001-1010.
［6］Miyazaki T, Hejmadi A V, Powers J E. New high-pressure recycle-flow calorimeter and results of determinations with ethane［J］. Journal of Chemical Thermodynamics,1980,12(2):105-124.
［7］Francis P G. A flow calorimeter for the measurement of the heat-capacities and joule-thomson coefficients of condensable vapors［J］. Journal of Chemical Thermodynamics,1990,22(6):545-556.
［8］Miyazawa T, Kondo S, Suzuki T, et al. Specific heat capacity at constant pressure of ethanol by flow calorimetry［J］. Journal of Chemical and Engineering Data,2012,57(6):1700-1707.
［9］时家增,何志迈.流动卡计测量加压气体比热实验台研制［C］//第二届全国热物性学术讨论会.成都,1987.
［10］丁翼鸣, 俞庆森, 林瑞森,等.气体流动热量计和苯、苯-环己烷气体热容的测量［J］.物理化学学报,1993,9 (4):542-547.
［11］邵爽,俞庆森.乙酸—4—甲基—2—戊酮体系汽体热容的测定与研究［J］.浙江大学学报:工学版,1995,(4): 523-527.
［12］赵小明,陆世豪,刘志刚.准稳态法测量液体比热容的实验研究［J］.工程热物理学报,2004,25（s1）:24-27.
［13］何茂刚, 钟秋, 薛榕,等.变容积量热器法测量液体比热容实验研究［J］.热科学与技术,2008,7(1):70-74.
［14］李佳,王灿,王海峰,等.中温固体比热容测量基准的研究进展［J］.计量学报,2016,4（37）:385-389.
［15］Goodwin R D. Toluene thermophysical properties from 178 to 800 K at pressures to 1000 bar［J］. Journal of Physical and Chemical Reference Data,1989,18 (4):1565-1636.
［16］Zhou Y, Liu J, Penoncello S G, et al.An equation of state for the thermodynamic properties of cyclohexane［J］. Journal of Physical and Chemical Reference Data,2014,43(4):123-138.
［17］王烨,杨立. 高温管道内流体流量及温度识别研究［J］.计量学报,2017,38(4):477-480.
［18］徐春媛,夏蔡娟,郝小鹏,等.准绝热法微型镓固定点相变特性研究［J］.计量学报,2017,38(1):19-22.
2018, Vol. 39 
