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High temperature heat pumps – Theoretical study on low GWP HFO and HCFO refrigerants.
Number: pap. n. 259
Author(s) : ARPAGAUS C., PRINZING M., KUSTER R., et al.
Summary
High temperature heat pumps with heat sink temperatures of 100 to 160 °C have great application potential in the food, paper, and chemical industries for heat recovery and process heat generation in drying, sterilization, and evaporation processes. The present study compares the theoretical performance of the low GWP refrigerants R1336mzz(Z), R1224yd(Z), R1234ze(Z), and R1233zd(E) in common one- and two-stage heat pump cycles (internal heat exchanger, economizer, flash tank, cascade) at different temperature levels. The thermodynamic simulations reveal that, depending on the refrigerant and cycle, a trade-off between system complexity (e.g. control, number of components), efficiency, and volumetric heating capacity (VHC) has to be found. Optimal COPs are reached depending on the refrigerant and its heat outlet temperature. R1336mzz(Z) is suggested as the closest drop-in replacement for R365mfc, while R1224yd(Z), R1234ze(Z), and R1233zd(E) are closer to R245fa in terms of COP and VHC. A two-stage cascade with IHX and R1336mzz(Z) in both stages achieved the highest efficiency for high temperature lifts.
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Format PDF
Pages: 8
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: High temperature heat pumps – Theoretical study on low GWP HFO and HCFO refrigerants.
- Record ID : 30026438
- Languages: English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Publication date: 2019/08/24
- DOI: http://dx.doi.org/10.18462/iir.icr.2019.0259
- Notes:
PowerPoint presentation included to this paper.
Links
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See the conference proceedings
Indexing
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Themes:
HCFCs;
HFCs;
Industrial heat pumps;
Blends;
HFO et HCFO - Keywords: Industrial application; Low GWP; R1336mzz(Z); R1224yd(Z); Thermodynamic property; Heat pump; Modelling; HFO; HCFO; High temperature
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