Heat-power decoupling and energy saving of the CHP unit with heat pump based waste heat recovery system

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorWang, Haichaoen_US
dc.contributor.authorHua, Pengminen_US
dc.contributor.authorWu, Xiaozhouen_US
dc.contributor.authorZhang, Ruoyuen_US
dc.contributor.authorGranlund, Katjaen_US
dc.contributor.authorLi, Jien_US
dc.contributor.authorZhu, Yingjieen_US
dc.contributor.authorLahdelma, Ristoen_US
dc.contributor.authorTeppo, Esaen_US
dc.contributor.authorYu, Lien_US
dc.contributor.departmentDepartment of Mathematics and Systems Analysisen
dc.contributor.departmentDepartment of Mechanical Engineeringen
dc.contributor.groupauthorOperations Research and Systems Analysisen
dc.contributor.groupauthorEnergy efficiency and systemsen
dc.contributor.organizationDalian University of Technologyen_US
dc.contributor.organizationHenan Provincial Investment Companyen_US
dc.contributor.organizationPlanora Oyen_US
dc.contributor.organizationChina Academy of Building Researchen_US
dc.date.accessioned2022-04-28T08:09:46Z
dc.date.available2022-04-28T08:09:46Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2024-04-01en_US
dc.date.issued2022-07-01en_US
dc.descriptionFunding Information: This work was supported by the China national key research and development program ? China-Finland intergovernmental cooperation in science and technology innovation (Funding No. 2021YFE0116200) and academy research fellow funding from Academy of Finland (Funding No. 336268 and 334205). Funding Information: This work was supported by the China national key research and development program – China -Finland intergovernmental cooperation in science and technology innovation (Funding No. 2021YFE0116200 ) and academy research fellow funding from Academy of Finland (Funding No. 336268 and 334205 ). Publisher Copyright: © 2022 Elsevier Ltd
dc.description.abstractCombined heat and power (CHP) plants are operating under more fluctuating working conditions due to the increasingly inconsistent demands for heat and power and integration of renewable energy. This paper proposes to use an electric heat pump (EHP) to decouple heat and power and save energy by recovering waste heat from the cooling water. The thermodynamic model of the CHP unit under dynamic working conditions is established, and the dynamic EHP model based on an efficiency factor is proposed. The heat-power decoupling and energy-saving potential with different heat and power outputs and the heat pump DH ratio (χHP) are analyzed for a CHP unit as a case study. Absorption heat pump (AHP) and EHP-based waste heat recovery systems are also compared. The results indicate that the heat-power decoupling potential is bigger when χHP and the heat demand are increasing. The energy-saving effect is clearer by increasing the coefficient of performance (COP), χHP, or both. AHP and EHP can help the system obtain a certain level of heat-power decoupling and energy-saving effects, but these effects of the AHP-based system are smaller than that of EHP, especially under the working conditions of high heat demand and low power demand.en
dc.description.versionPeer revieweden
dc.format.extent16
dc.format.extent1-16
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationWang, H, Hua, P, Wu, X, Zhang, R, Granlund, K, Li, J, Zhu, Y, Lahdelma, R, Teppo, E & Yu, L 2022, ' Heat-power decoupling and energy saving of the CHP unit with heat pump based waste heat recovery system ', Energy, vol. 250, 123846, pp. 1-16 . https://doi.org/10.1016/j.energy.2022.123846en
dc.identifier.doi10.1016/j.energy.2022.123846en_US
dc.identifier.issn0360-5442
dc.identifier.issn1873-6785
dc.identifier.otherPURE UUID: 7be2f9e3-cd00-47ea-bd84-656ef940ee2cen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/7be2f9e3-cd00-47ea-bd84-656ef940ee2cen_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85127353812&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/82200980/SCI_Wang_Heat_power_decoupling_and_energy_saving_of_the_CHP_unit_with_heat_pump_based_waste_heat_recovery_system.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/114045
dc.identifier.urnURN:NBN:fi:aalto-202204282932
dc.language.isoenen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofseriesEnergyen
dc.relation.ispartofseriesVolume 250en
dc.rightsopenAccessen
dc.subject.keywordAbsorption heat pump (AHP)en_US
dc.subject.keywordCombined heat and power (CHP)en_US
dc.subject.keywordElectric heat pump (EHP)en_US
dc.subject.keywordEnergy savingen_US
dc.subject.keywordHeat-power decouplingen_US
dc.subject.keywordWaste heat recoveryen_US
dc.titleHeat-power decoupling and energy saving of the CHP unit with heat pump based waste heat recovery systemen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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