Thermodynamic Properties of Aqueous Lithium Bromide Using a Multiproperty Free Energy Correlation
Thermodynamic Properties of Aqueous Lithium Bromide Using a Multiproperty Free Energy Correlation
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DOI：
10.1080/10789669.2005.10391144
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发表时间：
2005-07
期刊：
影响因子：
--
通讯作者：
Zhe Yuan;K. Herold
中科院分区：
文献类型：
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作者：
Zhe Yuan;K. Herold
基于吉布斯自由能基本函数，建立了溴化锂水溶液热力学性质的关联式。使用多属性曲线拟合蒸汽压、比热和体积数据来计算函数的系数。所用的比热数据是我们实验室获得的新实验值，并在配套文件中进行了描述。所用的蒸气压和体积数据来自文献。该关联式在从纯水到结晶线以及从5°C到250°C的整个液体浓度范围内具有良好的准确性。这种扩大的适用范围预计将在下一代高温吸收循环中有用。所使用的基本函数方法允许简单计算化学上一致的性质，包括蒸汽压、比热、比容、焓、熵、稀释热差和组分的化学势等。相关性的细节;实现相关性的软件有几种格式。
A new correlation of the thermodynamic properties of aqueous lithium bromide was constructed based on a Gibbs free energy fundamental function. The coefficients of the function were calculated using a multiproperty curve fit to vapor pressure, specific heat, and volumetric data. The specific heat data used are new experimental values obtained in our laboratory and described in a companion paper. The vapor pressure and volume data used came from the literature. The correlation gives good accuracy over the full range of liquid concentration from pure water up to the crystallization line and from 5°C to 250°C. This expanded range of applicability is expected to be useful in the next generation of high-temperature absorption cycles. The fundamental function approach used allows simple computation of thermodynamically consistent properties including vapor pressure, specific heat, specific volume, enthalpy, entropy, differential heat of dilution, and chemical potential of the components, among others. The details of the correlation are presented; software that implements the correlation is available in several formats.