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Experimental investigation of an absorption heat pump with organic working pairs

  • As part of a systematic approach towards the search for alternative absorption heat pump (AHP) working pairs that could potentially provide comparable performance to conventional ones, a previous work performed a detailed theoretical cycle analysis and simulation that revealed concrete correlations between key working fluid thermophysical properties and AHP performance indicators. Following this work, targeted combinations of two organic refrigerants, 2,2,2-trifluoroethanol (TFE) and 2,2,3,3,3-pentafluoropropanol (5FP) and two organic absorbents, 1,3-dimethyl-2-imidazolidinone (DMI) and 2-pyrrolidone (PYR) were tested in a prototype 5 kW AHP, based on a highly compact plate heat exchanger design, which has been previously introduced. The purpose of this effort was to test the findings of the previous work with experimental measurements. The working pair combinations were also subjected to vapor liquid equilibrium (VLE) and viscosity measurements, in order to determine reliable activity coefficient and improve the accuracy of the simulations. The experimental performance data agree well with the COP simulations and show to be consistent with the conclusions derived from the previous theoretical work.

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Metadaten
Author:Paris ChatzitakisORCiD, Javid SafarovORCiD, F. Opferkuch, Belal DawoudORCiDGND
DOI:https://doi.org/10.1016/j.applthermaleng.2019.114311
Parent Title (English):Applied Thermal Engineering
Publisher:Elsevier
Document Type:Article
Language:English
Year of first Publication:2019
Release Date:2022/01/31
Tag:Absorption heat pump; Coefficient of performance; FLUID; MIXTURES; Organic working pairs; Specific solution circulation
Volume:163
Issue:December
Article Number:114311
Institutes:Fakultät Maschinenbau
Begutachtungsstatus:peer-reviewed
research focus:Energie und Mobilität
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG
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