Measurement of properties of a lithium bromide aqueous solution for the determination of the concentration for a prototype absorption machine
Measurement of properties of a lithium bromide aqueous solution for the determination of the concentration for a prototype absorption machine
复制标题
测量溴化锂水溶液的性质以测定原型吸收机的浓度
DOI：
10.1016/j.applthermaleng.2016.10.162
复制
发表时间：
2017
影响因子：
6.4
通讯作者：
D. Salavera
中科院分区：
文献类型：
--
作者：
L. Labra;D. Juárez;J. Siqueiros;A. Coronas;D. Salavera
由于溴化锂（LiBr）水在原型吸收机中的广泛应用，因此选择溴化锂水作为电解质溶液进行研究。LiBr必须在接近溴化锂达到最高效率的温度和质量分数的条件下运行。为了在原型吸收机中建立浓度，测量了随温度和浓度变化的性质。所选择的性能是电导率、密度、折射率和声速。所得的测量值与先前工作中发现的一些值进行了比较。在溴化锂浓度为45 ~ 65%、温度为20 ~ 80℃的条件下，测定了溴化锂水溶液的性能。还提出了确定溴化锂性质的半经验相关性。考虑了测量水溶液性质的方法的可靠性、简单性和采样时间。
An electrolyte solution of Lithium Bromide (LiBr) water was chosen for study because of its wide use in prototype absorption machines. The LiBr must be operated close to the temperature and mass fraction at which lithium bromide achieves the highest efficiency.For the purpose of establishing the concentration in a prototype absorption machines, measurements were made of the properties that vary with temperature and concentration. The selected properties are electrical conductivity, density, refractive indexes and sound velocity. The resulting measured properties values were compared with some values found in previous works.The properties of aqueous lithium bromide solutions were measured at the concentration range of 45–65% of LiBr and temperatures range of 20–80 °C. Semi-empirical correlations that determine the properties of lithium bromide are also proposed.The methods for measuring the properties of aqueous solutions were considered taking into account their reliability, simplicity and sampling time.