摘要
针对新研发的斯特林式燃烧焓测量仪,设计了一个适用于本科教学、测量有机物燃烧焓的标准化实验方法。首先测量有机物的燃烧速率和物质燃烧时测量仪的输出功率,然后建立数学模型,确立燃烧焓与输出功率间的数学关系,再利用一种标准物质(无水乙醇)标定仪器的热功转换效率,最后将待测物的燃烧速率和输出功率代入数学模型计算其燃烧焓。
In view of the newly developed Stirling type combustion enthalpy measuring instrument,a standardized experimental method for measuring the combustion enthalpy of organic matters is designed,which is suitable for undergraduate teaching.Firstly,the combustion rate of organic matter and the output power of the measuring instrument are measured.Then,a mathematical model is constructed to establish the mathematical relationship between the combustion enthalpy and the output power.Then,a reference material(anhydrous ethanol)is used to calibrate the thermal power conversion efficiency of the instrument.Finally,the combustion rate and the output power of the measured matter are brought into the mathematical model to calculate its combustion enthalpy.
作者
王林
李晓舟
李炜
黄婉婷
李天保
赵海双
WANG Lin;LI Xiaozhou;LI Wei;HUANG Wanting;LI Tianbao;ZHAO Haishuang(Sino-US Joint Research Center for Food Safety,College of Chemistry and Pharmacy,Northwest Agriculture and Forestry University,Yangling,712100,China)
出处
《实验技术与管理》
CAS
北大核心
2020年第1期48-51,共4页
Experimental Technology and Management
基金
国家自然科学基金项目(21808188)
陕西省自然科学基金项目(2016JM2014,2017JQ5043)
西北农林科技大学教学改革研究项目(JY1702036).
关键词
斯特林热机
燃烧焓
物理化学实验
Stirling thermal machine
combustion enthalpy
physical chemistry experiment