In:
Asia-Pacific Journal of Chemical Engineering, Wiley, Vol. 14, No. 1 ( 2019-01)
Abstract:
The purpose of this paper is to study the working fluids in absorption cycle containing methanol (CH 3 OH) as the refrigerant and the imidazolium ionic liquid (IL) as the absorbent. The UNIFAC model was implemented to correlate the published experimental vapor liquid equilibrium data of CH 3 OH–IL working fluids and 14 new group interaction parameters between CH 3 OH and ILs were obtained. Method reliability and applicability were evaluated by calculating the vapor pressures of five CH 3 OH–IL working fluids. The ILs contained 1‐methyl‐3‐methylimidazolium dimethylphosphate ([Dmim][DMP] ), 1‐ethyl‐3‐methylimidazolium ethyl sulfate ([Emim][ES] ), 1‐ethyl‐3‐methylimidazolium diethylphosphate ([Emim][DEP] ), 1‐butyl‐3‐methylimidazolium dibutylphosphate ([Bmim][DBP] ), and 1‐ethyl‐3‐ethylimidazolium diethylphosphate ([Eeim][DEP] ). The average absolute relative deviations for the vapor pressures between the calculated results and the experimental data were 0.91%, 1.67%, 0.66%, 0.75%, and 2.1%, respectively. Then, the CH 3 OH–IL systems without experimental data were predicted. Comparisons of the vapor pressure and excess Gibbs function of the studied CH 3 OH–IL systems, CH 3 OH‐[Hmim][DEP] (1‐hexyl‐3‐methylimidazolium diethylphosphate) system, as an alternative working fluid, was found to have potential to improve the absorption cycle performance upon more research work.
Type of Medium:
Online Resource
ISSN:
1932-2135
,
1932-2143
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2276947-X
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