不同浓度配比硼酸溶液比定压热容的实验测量  

Experimental measurement of isobaric heat capacity of boric acid solution

作　　者：宋星佑 苏超[2] 刘向阳[2] 何茂刚[2] 

机构地区：[1]中广核工程有限公司,广东深圳518000 [2]西安交通大学热流科学与工程教育部重点实验室,陕西西安710049

出　　处：《热科学与技术》2015年第3期250-254,共5页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目(51376141)

摘　　要：采用高精度的流动型量热法测量了温度在303-396K、压力在0．1～0．5MPa时，质量摩尔浓度分别为0．648、3．700（无杂质）和3．700（含杂质）mol／kg三种配比硼酸溶液的比定压热容。实验系统的温度、压力、比定压热容的测量不确定度分别小于0．05K、18kPa、0．28％。为了验证实验系统的测量精度和可靠性，测量了温度为296～396K、压力为0．1～6．0MPa内纯水的比定压热容，与NIST值相比的相对偏差绝对平均值为0．41％。Isobaric heat capacities of boric acid solution at the impurities） and 3. 700 mol/kg （containing impurities） were calorimeter at temperatures of 303-396 K and pressures of concentrations of 0. 648, 3. 700 （no measured using high accuracy flow 0.1-0.5 MPa. The uncertainties of temperature, pressure, and isobaric haet capacity were less than ±0.05 K, ±18 kPa and ± 0.28 %,respectively. In order to evaluate the reliability of the experimental system, pure water at temperatures of 296-396 K and pressures from atmosphere to and the measured average relative deviation from the NIST literature values isobaric 6.0 MP is withi heat capacities of a were measured, n 0. 41%.

关 键 词：比定压热容 量热法 硼酸溶液 

分 类 号：TK121[动力工程及工程热物理—工程热物理]