Optimal PI control parameters for accurate underfloor heating temperature control

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKull, Tuule Mallen_US
dc.contributor.authorThalfeldt, Martinen_US
dc.contributor.authorKurnitski, Jareken_US
dc.contributor.departmentDepartment of Civil Engineeringen
dc.contributor.groupauthorStructures – Structural Engineering, Mechanics and Computationen
dc.contributor.organizationTallinn University of Technologyen_US
dc.date.accessioned2019-09-03T13:45:35Z
dc.date.available2019-09-03T13:45:35Z
dc.date.issued2019-08-13en_US
dc.description.abstractIn low energy buildings, the effect of internal and solar gains on heat balance of rooms is large. As a result, the heating systems, designed assuming steady-state conditions with no heat gains, are over-dimensioned for most of the heating period. This poses a challenge for room-based control systems, especially for thermostatic valves, but also for PI controllers. Using over-dimensioned room units might result in room temperature fluctuations. For finding solutions to this problem by using simulations, correct modelling of the control system together with the room is crucial. Therefore, the aim of this research was to determine the challenges that occur while matching measured and simulated temperature profiles and test the effect of PI control parameters on the calibrated model control accuracy. The experiments were carried out for the underfloor heating system of a test building. The building was simulated in IDA-ICE software and calibration via minimising root mean square error of energy consumption in GenOpt was carried out. The PI parameters were fit by optimisation with objective to simulate the measured temperatures accurately. The effect of the optimized PI parameters was determined by comparison to IDA-ICE default parameters and parameters from Cohen-Coon method.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationKull, T M, Thalfeldt, M & Kurnitski, J 2019, Optimal PI control parameters for accurate underfloor heating temperature control . in Clima 2019 ., 01081, E3S Web of Conferences, vol. 111, EDP Sciences, REHVA World Congress, Bucharest, Romania, 26/05/2019 . https://doi.org/10.1051/e3sconf/201911101081en
dc.identifier.doi10.1051/e3sconf/201911101081en_US
dc.identifier.issn2555-0403
dc.identifier.issn2267-0403
dc.identifier.otherPURE UUID: 645e62d0-6c7d-43b9-94ce-b437c11992baen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/645e62d0-6c7d-43b9-94ce-b437c11992baen_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85071851644&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/36242046/e3sconf_clima2019_01081.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/40059
dc.identifier.urnURN:NBN:fi:aalto-201909035101
dc.language.isoenen
dc.publisherEDP Sciences
dc.relation.ispartofREHVA World Congressen
dc.relation.ispartofseriesClima 2019en
dc.relation.ispartofseriesE3S Web of Conferencesen
dc.relation.ispartofseriesVolume 111en
dc.rightsopenAccessen
dc.titleOptimal PI control parameters for accurate underfloor heating temperature controlen
dc.typeA4 Artikkeli konferenssijulkaisussafi
dc.type.versionpublishedVersion

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