Modelling of the thermodynamic properties of the water-ammonia mixture by three different approaches.
Modelling of the thermodynamic properties of the water-ammonia mixture by three different approaches.
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DOI：
10.1016/j.ijrefrig.2005.06.002
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发表时间：
2006-03
期刊：
影响因子：
--
通讯作者：
K. Mejbri;A. Bellagi
中科院分区：
文献类型：
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作者：
K. Mejbri;A. Bellagi
本文讨论了水-氨混合制冷剂热力性质的模拟。三种不同的方法制定和比较。第一种是基于混合物的自由焓模型的经验方法，该模型被认为是其纯组分的性质和对应于偏离理想溶液概念的过量项的结果。其次，考虑了基于PATEL和TEJA立方型状态方程的半经验方法。最后，一个理论方法制定为PC-SAFT（扰动链统计缔合流体理论）状态方程的治疗。这三种方法的比较证明了PC-SAFT在预测和外推水-氨系统的热力学性质到非常高的温度和压力的优越性。
This paper deals with the modelling of the thermodynamic properties of the water–ammonia refrigerant mixture. Three different approaches are formulated and compared. The first is an empirical approach based on a free enthalpy model of the mixture considered as the resultant of the properties of its pure components and of an excess term corresponding to the deviation to the ideal solution concept. Secondly, a semi-empirical approach based on the PATEL and TEJA cubic equation of state is considered. Finally, a theoretical approach formulated as PC-SAFT (perturbed chain statistical associating fluid theory) equation of state is treated. A comparison of these three methods proves the superiority of PC-SAFT in predicting and extrapolating the thermodynamic properties of the water–ammonia system up to very high temperatures and pressures.