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Venzik, Valerius ; Roskosch, Dennis ; Atakan, Burak:
Propene/isobutane mixtures in heat pumps : An experimental investigation.
In: International Journal of Refrigeration.
Bd. 76
(2017)
.
- S. 84-96.
ISSN 1879-2081
DOI: https://doi.org/10.1016/j.ijrefrig.2017.01.027
Abstract
Zeotropic mixtures in heat pumps, based on thermodynamic analysis, should lead to higher coefficients of performance (COP) due to the temperature glide which decreases exergy losses in the heat exchangers. However, fluid mixtures influence every component of a plant and the total system performance. In addition to the various theoretical studies in this field, a laboratory scale vapour compression heat pump test rig was designed and set up. In the present experimental investigations, the operating performance for the pure fluids isobutane and propene, and their mixtures are systematically investigated. COPs and exergetic efficiencies as a function of evaporation temperature, compressor speed and composition of the mixture are presented and compared with a theoretical approach. Contrary to theoretical expectations, the experimental results show only a slight increase of the COP for the mixture, compared to the better pure fluid, because heat exchanger pressure drops reduce the temperature glide.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Vapour compression system; Heat pumps; Refrigeration mixture; Hydrocarbon; Temperature glide |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Technische Thermodynamik und Transportprozesse |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 05 Okt 2026 06:11 |
| Letzte Änderung: | 05 Okt 2026 06:11 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/99580 |