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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 (August 2013) Issue 11 . - pp. 1382-1388.
ISSN 1099-114X
DOI: https://doi.org/10.1002/er.2997

Official URL: Volltext

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: 28 Feb 2019 10:43
URI: https://eref.uni-bayreuth.de/id/eprint/23028