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Theoretical Study of a Multilevel Heat Pump for Multi-Source Heating
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-7686-8880
Univ Jaume 1, Dept Mech Engn & Construct, Castellon de La Plana 12071, Spain..
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-6651-427x
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0003-4381-906x
2021 (English)In: 6Th Iir Conference On Thermophysical Properties And Transfer Processes Of Refrigerants (Tptpr2021), INT INST REFRIGERATION , 2021, p. 243-250Conference paper, Published paper (Refereed)
Abstract [en]

Industry and other sectors are currently looking for solutions to decarbonize their processes, including heating, which is mainly based on fossil fuel boilers. Heat pumps can provide heating with higher performance based on their high coefficient of performance (COP). This work considers a multilevel heat pump (MTHP) for multi-source heating, based on a three-stage cascade in which excess heat in the condenser is used for external flows, that can be connected in series or parallel. Several available low GWP refrigerants have been considered, and a multi-parameter selection analysis has been carried out. For low, medium, and high-temperature stages, R1243zf, R-1224yd(Z), and R-1233zd(E) are the best refrigerants, respectively, selected. This system is able to operate between 0 and 160 degrees C, with three heating levels at 60, 110, 160 degrees C (31.75, 21.59, and 29.92 kW, respectively) at a COP of 2.181. The total cooling capacity of the system is 45.08 kW and the total heating capacity is 83.26 kW. The MTHP concept can provide a significant carbon footprint reduction compared to natural gas boilers used in European countries.

Place, publisher, year, edition, pages
INT INST REFRIGERATION , 2021. p. 243-250
Series
Refrigeration Science and Technology, ISSN 0151-1637
Keywords [en]
Hydrofluooroolefin (HFO), three-stage cascade, decarbonization, COP, low GWP (global warming potential)
National Category
Engineering and Technology Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-319449DOI: 10.18462/iir.TPTPR.2021.2206ISI: 000855142700029OAI: oai:DiVA.org:kth-319449DiVA, id: diva2:1700678
Conference
6th IIR Conference on Thermophysical Properties and Transfer Processes of Refrigerants (TPTPR) / 13th IIR Conference on Phase Change Materials and Slurries for Refrigeration and Air Conditioning (PCM), SEP 01-03, 2021, ELECTR NETWORK
Note

QC 20221003

Part of proceedings: ISBN 978-2-36215-048-7

Available from: 2022-10-03 Created: 2022-10-03 Last updated: 2023-09-11Bibliographically approved

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Badran, Bassam E.Ghanbarpour, MortezaKhodabandeh, Rahmatollah

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