液体燃烧热的测定

文章从燃烧热测定的方法原理,实验操作,数据处理和应用的角度,探讨了液体样品燃烧热测定方法.取一定量的标准试样,置于氧弹中,向氧弹中充入过量的氧气,再将氧弹置于一定量的水中,让试样在氧弹中燃烧,释放的热量被水吸收,准确测定水的升温值,在一定温度下,吸收热量的水以及水中各个器件所构成的量热体系的热容量是一个常数,然后将样品与已知热值且不易挥化的液体混合后一并装入封闭的聚乙烯燃烧杯中,利用得到的仪器热容量,按相同的实验操作方法,利用自编的数据处理系统计算出液体样品的燃烧热.此法准确、简便、实用,用于日常检测工作.

Determination of Liquid Combustion Heat

The paper introduced the determining method of liquid combustion heat based on the principle, data treatment and application of the determining .combustion heat. After the benchmark substance were accurately quantified and the heat capable of the calorimetry was determined. The combustion eup with sample and combustion-supporting reagent were put into the oxygen bomb,these sample were complete combusted in oxygen bomb with high pressure pure oxygen. These record of time and the change of calorimeter temperature were analyzed with the self-designed data treatment system of oxygen bomb combustion. This method was proved to be accurate, simple and convenient to be used in routine analysis.