The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Thalfeldt, Martin
dc.contributor.author Simson, Raimo
dc.contributor.author Kurnitski, Jarek
dc.date.accessioned 2017-05-11T06:43:34Z
dc.date.available 2017-05-11T06:43:34Z
dc.date.issued 2016
dc.identifier.citation Thalfeldt , M , Simson , R & Kurnitski , J 2016 , The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating . in SB16 Tallinn and Helsinki Conference : Build Green and Renovate Deep, 5-7 October 2016, Tallinn and Helsinki . ENERGY PROCEDIA , vol. 96 , Elsevier , pp. 467-477 , Sustainable Built Environment Tallinn and Helsinki Conference , Tallinn , Estonia , 5-7 October . DOI: 10.1016/j.egypro.2016.09.178 en
dc.identifier.issn 1876-6102
dc.identifier.other PURE UUID: 09ea77c0-624d-4d8c-a7f2-5f4c721a1df4
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/the-effect-of-hydronic-balancing-on-room-temperature-and-heat-pump-efficiency-of-a-building-with-underfloor-heating(09ea77c0-624d-4d8c-a7f2-5f4c721a1df4).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85006340056&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/12900445/1_s2.0_S1876610216308177_main.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/25445
dc.description.abstract Underfloor heating is a common solution in single-family houses and a suitable solution for nearly zero-energy buildings as a low temperature heating system. According to general practice, the underfloor heating systems should be balanced to assure stable room temperatures and avoid under heating in rooms with higher heat losses. The purpose of the presented study was to analyze the effect of hydronic balancing on the room temperature fluctuations and heat pump performance. The tests were performed at full-scale nearly zero-energy building test facility with under floor heating and an air-to-water heat pump. We measured room and floor temperatures and monitored the heat pump electricity use and heat output. The heat balance of rooms was disturbed with internal gains introduced to several rooms in cycles. The results showed that room temperature fluctuations slightly increased of an unbalanced system, however during all tests, the average temperature fluctuations during night time were below 0.2 °C, so both systems performed well. We identified a negative effect of balancing on the heat pump performance as higher COP was measured in case of an unbalanced system. The results allow to conclude that in the case of studied system with one manifold and relatively small loop length differences the balancing had negligible effect on system performance. However, the topic should be studied further in more unfavorable conditions. en
dc.format.extent 11
dc.format.extent 467-477
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier
dc.relation.ispartof Sustainable Built Environment Tallinn and Helsinki Conference en
dc.relation.ispartofseries SB16 Tallinn and Helsinki Conference en
dc.relation.ispartofseries ENERGY PROCEDIA en
dc.relation.ispartofseries Volume 96 en
dc.rights openAccess en
dc.subject.other Energy(all) en
dc.subject.other 212 Civil and construction engineering en
dc.subject.other 216 Materials engineering en
dc.title The Effect of Hydronic Balancing on Room Temperature and Heat Pump Efficiency of a Building with Underfloor Heating en
dc.type A4 Artikkeli konferenssijulkaisussa fi
dc.description.version Peer reviewed en
dc.contributor.department Tallinn University of Technology
dc.contributor.department Department of Civil Engineering
dc.subject.keyword heat pumps
dc.subject.keyword hydronic balancing
dc.subject.keyword indoor climate
dc.subject.keyword underfloor heating
dc.subject.keyword Energy(all)
dc.subject.keyword 212 Civil and construction engineering
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-201705113829
dc.identifier.doi 10.1016/j.egypro.2016.09.178
dc.type.version publishedVersion


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