Screening of Ionic Liquid/H2O Working Pairs for Application in Low Temperature Driven Sorption Heat Pump Systems

Journal article


Publication Details

Author(s): Popp S, Bösmann A, Woelfel R, Wasserscheid P
Journal: ACS Sustainable Chemistry and Engineering
Publisher: American Chemical Society
Publication year: 2015
Volume: 3
Pages range: 750-757
ISSN: 2168-0485


Abstract


Due to the known corrosion and crystallization issues of LiBr/H2O, the state-of-the-art working pair in sorption heat pump (SHP) systems, research into alternative working pairs is of high practical relevance. We have studied a wide range of ionic liquids (ILs) for this application in order to find potential new systems with enhanced performance. The screening was conducted with a focus on vapor pressure measurements of, in total, 74 examined working pairs. As common vapor liquid-equilibrium measurements are very precise but rather time-consuming, we developed a new setup allowing a fast relative determination of humidities with very small sample volumes for screening purposes. By this method we identified seventeen IL/H2O working pairs fulfilling the technical relevant criterion of a water vapor pressure p(H2O) <= 10 mbar at T = 308 K with an IL content of less than 80 wt % (wm < 0.8). Further evaluation of these candidates with respect to their thermal stability and viscosity allowed us to identify [MMIM][HCOO]/H2O, [MIVIIM][OAc]/H2O, [M.MININC2H5COO]/H2O, [Me4N][HCOO]/H2O, [Me4N][OAc]/ H2O and [Me4N] [C2H5COO]/H2O as the most promising IL/H2O systems for a possible application in SHP systems.



FAU Authors / FAU Editors

Bösmann, Andreas Dr.
Lehrstuhl für Chemische Reaktionstechnik
Popp, Sabine
Lehrstuhl für Chemische Reaktionstechnik
Wasserscheid, Peter Prof. Dr.
Lehrstuhl für Chemische Reaktionstechnik
Woelfel, Rene
Lehrstuhl für Chemische Reaktionstechnik


How to cite

APA:
Popp, S., Bösmann, A., Woelfel, R., & Wasserscheid, P. (2015). Screening of Ionic Liquid/H2O Working Pairs for Application in Low Temperature Driven Sorption Heat Pump Systems. ACS Sustainable Chemistry and Engineering, 3, 750-757. https://dx.doi.org/10.1021/acssuschemeng.5b00062

MLA:
Popp, Sabine, et al. "Screening of Ionic Liquid/H2O Working Pairs for Application in Low Temperature Driven Sorption Heat Pump Systems." ACS Sustainable Chemistry and Engineering 3 (2015): 750-757.

BibTeX: 

Last updated on 2018-10-08 at 03:24