Ionic liquid based absorption chillers for usage of low grade waste heat in industry

Title data

Preißinger, Markus ; Pöllinger, Simon ; Brüggemann, Dieter:
Ionic liquid based absorption chillers for usage of low grade waste heat in industry.
In: International Journal of Energy Research. Vol. 37 (2013) Issue 11 . - pp. 1382-1388.
ISSN 1099-114X
DOI: https://doi.org/10.1002/er.2997

Official URL:

Abstract in another language

The standard working pairs for absorption chillers, ammonia/water and water/lithium bromide show problematic behaviours like crystallisation and corrosiveness. Because of their convenient solving properties and their low vapour pressure, ionic liquids are a new promising class of sorbents for absorption cooling purposes. In this study, the working pairs water/1,3-dimethylimidazolium dimethylphosphate ([MMIM][DMP]) and water/1-ethyl-3-methylimidazolium dimethylphosphate ([EMIM][DMP]) are implemented in AspenPlus. The performance of a single effect cycle with these pairs is simulated and compared to results of a cycle with water/LiBr. For [EMIM][DMP] a coefficient of performance (COP) comparable to that of LiBr or even higher (up to 0.85) is found. [MMIM][DMP] shows a smaller maximum COP but a largely wider operating temperature range than LiBr. Results are compared with those of other groups, discrepancies discussed and improvements suggested.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	ionic liquids; absorption chiller; waste heat; lithium bromide; ammonia/water: [MMIM][DMP]; [EMIM][DMP]
Institutions of the University:	Faculties Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes Faculties > Faculty of Engineering Science > Chair Engineering Thermodynamics and Transport Processes > Chair Engineering Thermodynamics and Transport Processes - Univ.-Prof. Dr.-Ing. Dieter Brüggemann Profile Fields Profile Fields > Emerging Fields Profile Fields > Emerging Fields > Energy Research and Energy Technology Research Institutions > Research Units > ZET - Zentrum für Energietechnik Research Institutions Research Institutions > Research Units
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	27 Nov 2015 08:16
Last Modified:	14 Sep 2022 13:14
URI:	https://eref.uni-bayreuth.de/id/eprint/23028