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Vapor–Liquid Equilibria for R1234ze(E) and Three Imidazolium-Based Ionic Liquids as Working Pairs in Absorption–Refrigeration Cycle
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2018-06-15 , DOI: 10.1021/acs.jced.8b00314
Yanjun Sun 1, 2 , Yao Zhang 3 , Gaolei Di 1 , Xiaopo Wang 3 , John M. Prausnitz 2 , Liwen Jin 1
Affiliation  

The thermodynamic properties of a working-fluid pair, composed of a refrigerant and an absorbent, greatly influence the performance of an absorption–refrigeration cycle. Particularly important is the solubility of the vaporized refrigerant in the absorbent. Using an isochoric saturation method, solubilities were measured for trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) in 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]), 1-hexyl-3-methylimidazolium hexafluorophosphate ([Hmim][PF6]), and 1-methyl-3-octylimidazolium hexafluorophosphate ([Omim][PF6]) from 283.15 to 343.15 K. Solubilities rise with a decrease in temperature and an increase in pressure. The highest solubility is in [Omim][PF6], followed by [Hmim][PF6], and [Bmim][PF6]. The new data were correlated by the nonrandom two-liquid model and by the Krichevsky–Ilinskays equation; both provide good agreement with the experimental data. Estimates were given for total enthalpy, entropy, and Gibbs energy of dissolution.

中文翻译:

吸收-制冷循环中R1234ze(E)和三种咪唑基离子液体作为工作对的汽液平衡

由制冷剂和吸收剂组成的工作流体对的热力学性质极大地影响了吸收-制冷循环的性能。特别重要的是汽化制冷剂在吸收剂中的溶解度。使用等速饱和方法,测量反式-1,3,3,3-四氟丙烯(R1234ze(E))在六氟磷酸1-丁基-3-甲基咪唑鎓([Bmim] [PF 6 ]),1-己基-苯基中的溶解度。3-甲基咪唑六氟磷酸盐([Hmim] [PF 6 ])和1-甲基-3-辛基咪唑六氟磷酸盐([Omim] [PF 6 ])从283.15至343.15K。溶解度随着温度的降低和压力的升高而增加。 。最高的溶解度是在[Omim] [PF 6 ]中,其次是[Hmim] [PF6 ]和[Bmim] [PF 6 ]。新数据通过非随机二液模型和Krichevsky-Ilinskays方程进行关联。两者均与实验数据吻合良好。给出了总焓,熵和吉布斯溶解能的估计值。
更新日期:2018-06-16
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