Experimental and numerical investigation of a novel high-temperature heat pump for sensible and latent heat delivery

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dc.contributor.authorRamirez, Miguel
dc.contributor.authorTrebilcock-Kelly, Felipe
dc.contributor.authorCorrales-Ciganda, José L.
dc.contributor.authorPayá, Jorge
dc.contributor.authorHassan, Abdelrahman H.
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionSISTEMAS TÉRMICOS EFICIENTES
dc.date.issued2024-06-15
dc.descriptionPublisher Copyright: © 2024 The Authors
dc.description.abstractThis paper investigates, both experimentally and numerically, the performance of a high-temperature heat pump (HTHP) prototype for steam production and thermal energy storage applications using R-1233zd(E) as a refrigerant. The main novelties of this prototype are the incorporation of an external subcooler to separate the sensible and latent heat production. Other novel points are the testing of a new variable-speed piston compressor that endures a discharge temperature of up to 160 °C, and the development of an advanced numerical model based on the components’ specifications. In this temperature range there are very few detailed studies up-to-date. The proposed HTHP was tested experimentally in 50 different working points selected based on the compressor's limits and on the general requirements for industrial applications requiring heat at high temperatures, up to 150 °C. The results show that the proposed HTHP can deliver a total heat of 38.6 kW at 148.5 °C, within a temperature lift of 66.8 K, with an electric power consumption of 10.7 kW, and with a heating coefficient of performance (COP) of 3.6. Moreover, using the external subcooler resulted in a substantial increase in the COP, which can reach 33 % compared with similar HTHPs without a subcooler. After successfully validating the HTHP model with the experimental results, extended performance maps were developed based on more than 500 possible operating conditions covering the most common steam generation and energy storage applications. Finally, four performance correlations were obtained, with an accuracy of ±10 %, hereby providing a black-box model to ease the integration of such HTHPs into dynamic simulations of industrial processes.en
dc.description.statusPeer reviewed
dc.identifier.citationRamirez , M , Trebilcock-Kelly , F , Corrales-Ciganda , J L , Payá , J & Hassan , A H 2024 , ' Experimental and numerical investigation of a novel high-temperature heat pump for sensible and latent heat delivery ' , Applied Thermal Engineering , vol. 247 , 122961 . https://doi.org/10.1016/j.applthermaleng.2024.122961
dc.identifier.doi10.1016/j.applthermaleng.2024.122961
dc.identifier.issn1359-4311
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85189758406&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofApplied Thermal Engineering
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsHeat recovery
dc.subject.keywordsHigh-temperature heat pump
dc.subject.keywordsNumerical modeling
dc.subject.keywordsPiston-compressor
dc.subject.keywordsR-1233zd(E)
dc.subject.keywordsSubcooler
dc.subject.keywordsEnergy Engineering and Power Technology
dc.subject.keywordsMechanical Engineering
dc.subject.keywordsFluid Flow and Transfer Processes
dc.subject.keywordsIndustrial and Manufacturing Engineering
dc.titleExperimental and numerical investigation of a novel high-temperature heat pump for sensible and latent heat deliveryen
dc.typejournal article
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