Heat storage efficiency and effective thermal output: Indicators of thermal response and output of radiant heating and cooling systems

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dc.contributor.authorKrajčík, Michalcs
dc.contributor.authorŠikula, Ondřejcs
dc.coverage.issue1cs
dc.coverage.volume229cs
dc.date.accessioned2023-01-27T15:52:52Z
dc.date.available2023-01-27T15:52:52Z
dc.date.issued2020-12-15cs
dc.description.abstractAn alternative indicator of thermal response of radiant heating and cooling systems called heat storage efficiency (HSE) has been tested. The heat storage efficiency was compared with established indicators represented by the time constant tau(63), response time tau(95), and thermal energy stored (TES). The comparison was performed for three wall cooling systems with various combinations of pipe location, configuration of material layers, and materials of the thermal core. Considering the whole response curve (HSE) instead of focusing on one specific point on the curve (tau(63), tau(95)) allowed comparing the thermal response of complex systems by a single value. It also permitted predicting thermal response consistently regardless of the system and core material. Thermal energy stored predicted the thermal response of certain systems, but it may not be suitable for comparing the thermal response of radiant systems with different thermal admittance. Besides, a novel indicator of thermal output called effective thermal output (ETO) has been proposed. The effective thermal output considers both the steady-state thermal performance represented by the nominal thermal output and dynamic thermal performance represented by the heat storage efficiency. For thermally active building systems (TABS), effective thermal output was up to 57% lower than the nominal thermal output. (C) 2020 Elsevier B.V. All rights reserved.en
dc.formattextcs
dc.format.extent1-14cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationENERGY AND BUILDINGS. 2020, vol. 229, issue 1, p. 1-14.en
dc.identifier.doi10.1016/j.enbuild.2020.110524cs
dc.identifier.issn0378-7788cs
dc.identifier.other166285cs
dc.identifier.urihttp://hdl.handle.net/11012/208784
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofENERGY AND BUILDINGScs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S037877882031937Xcs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/0378-7788/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectRadiant heating and coolingen
dc.subjectThermally active building systems (TABS)en
dc.subjectThermal responseen
dc.subjectResponse timeen
dc.subjectHeat storage efficiencyen
dc.subjectEffective thermal outputen
dc.subjectThermal energy storeden
dc.titleHeat storage efficiency and effective thermal output: Indicators of thermal response and output of radiant heating and cooling systemsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionacceptedVersionen
sync.item.dbidVAV-166285en
sync.item.dbtypeVAVen
sync.item.insts2023.01.27 16:52:51en
sync.item.modts2023.01.27 16:14:27en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav geotechnikycs
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