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Techno-economic optimization of high-temperature heat pumps using pure fluids and binary mixtures

Elias Vieren (UGent) , Toon Demeester (UGent) , Wim Beyne (UGent) , Martin pihl andersen, Brian Elmegaard, Michel De Paepe (UGent) and Steven Lecompte (UGent)
(2023) Proceedings of the 14th IEA Heat Pump Conference.
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Abstract
Electrically driven high-temperature heat pumps (HTHPs) are becoming a promising and cost-effective technology to replace fossil-fuel driven boilers through residual heat recovery and revalorization. HTHPs are however often designed and optimized in terms of thermodynamic performance, neglecting financial aspects such as the levelized cost of heat (LCOH). In this study, the heat pump design and operating conditions are optimized by minimizing the LCOH. This is done for a wide set of working fluids and boundary conditions. Both subcritical, transcritical and supercritical cycles, as well as (zeotropic) binary mixtures, are considered. Depending on the boundary conditions, both pure fluids as well as (zeotropic) binary mixtures, mostly operating in the subcritical region, are financially attractive. The potential benefits of zeotropic mixtures are twofold: (1) more favorable operating conditions and (2) higher COPs. Transcritical cycles only showed to be attractive for large temperature glides at the heat sink side. The results also shows that the financial and thermodynamic optima differ in many cases. One reason for this is that working fluids with a high COP often induce high compressor inlet volume flow rates, resulting in high compressor costs.
Keywords
heat pump, zeotropic mixture, high-temperature heat pump, simulation, financial, binary mixture

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MLA
Vieren, Elias, et al. “Techno-Economic Optimization of High-Temperature Heat Pumps Using Pure Fluids and Binary Mixtures.” Proceedings of the 14th IEA Heat Pump Conference, Technology Collaboration Programme on Heat Pumping Technologies by IEA (HPT TCP), 2023.
APA
Vieren, E., Demeester, T., Beyne, W., pihl andersen, M., Elmegaard, B., De Paepe, M., & Lecompte, S. (2023). Techno-economic optimization of high-temperature heat pumps using pure fluids and binary mixtures. Proceedings of the 14th IEA Heat Pump Conference. Presented at the 14th IEA Heat Pump Conference, Chicago, Illinois.
Chicago author-date
Vieren, Elias, Toon Demeester, Wim Beyne, Martin pihl andersen, Brian Elmegaard, Michel De Paepe, and Steven Lecompte. 2023. “Techno-Economic Optimization of High-Temperature Heat Pumps Using Pure Fluids and Binary Mixtures.” In Proceedings of the 14th IEA Heat Pump Conference. Chicago, Illinois: Technology Collaboration Programme on Heat Pumping Technologies by IEA (HPT TCP).
Chicago author-date (all authors)
Vieren, Elias, Toon Demeester, Wim Beyne, Martin pihl andersen, Brian Elmegaard, Michel De Paepe, and Steven Lecompte. 2023. “Techno-Economic Optimization of High-Temperature Heat Pumps Using Pure Fluids and Binary Mixtures.” In Proceedings of the 14th IEA Heat Pump Conference. Chicago, Illinois: Technology Collaboration Programme on Heat Pumping Technologies by IEA (HPT TCP).
Vancouver
1.
Vieren E, Demeester T, Beyne W, pihl andersen M, Elmegaard B, De Paepe M, et al. Techno-economic optimization of high-temperature heat pumps using pure fluids and binary mixtures. In: Proceedings of the 14th IEA Heat Pump Conference. Chicago, Illinois: Technology Collaboration Programme on Heat Pumping Technologies by IEA (HPT TCP); 2023.
IEEE
[1]
E. Vieren et al., “Techno-economic optimization of high-temperature heat pumps using pure fluids and binary mixtures,” in Proceedings of the 14th IEA Heat Pump Conference, Chicago, Illinois, 2023.
@inproceedings{01H2AYG1PBM8PQTYQ6GZDE02VZ,
  abstract     = {{Electrically driven high-temperature heat pumps (HTHPs) are becoming a promising and cost-effective technology to replace fossil-fuel driven boilers through residual heat recovery and revalorization. HTHPs are however often designed and optimized in terms of thermodynamic performance, neglecting financial aspects such as the levelized cost of heat (LCOH). In this study, the heat pump design and operating conditions are optimized by minimizing the LCOH. This is done for a wide set of working fluids and boundary conditions. Both subcritical, transcritical and supercritical cycles, as well as (zeotropic) binary mixtures, are considered. Depending on the boundary conditions, both pure fluids as well as (zeotropic) binary mixtures, mostly operating in the subcritical region, are financially attractive. The potential benefits of zeotropic mixtures are twofold: (1) more favorable operating conditions and (2) higher COPs. Transcritical cycles only showed to be attractive for large temperature glides at the heat sink side. The results also shows that the financial and thermodynamic optima differ in many cases. One reason for this is that working fluids with a high COP often induce high compressor inlet volume flow rates, resulting in high compressor costs.}},
  articleno    = {{95}},
  author       = {{Vieren, Elias and Demeester, Toon and Beyne, Wim and pihl andersen, Martin and Elmegaard, Brian and De Paepe, Michel and Lecompte, Steven}},
  booktitle    = {{Proceedings of the 14th IEA Heat Pump Conference}},
  keywords     = {{heat pump,zeotropic mixture,high-temperature heat pump,simulation,financial,binary mixture}},
  language     = {{eng}},
  location     = {{Chicago, Illinois}},
  pages        = {{11}},
  publisher    = {{Technology Collaboration Programme on Heat Pumping Technologies by IEA (HPT TCP)}},
  title        = {{Techno-economic optimization of high-temperature heat pumps using pure fluids and binary mixtures}},
  year         = {{2023}},
}