Simulation of Advance Thermal Processes in Buildings to Optimise Energy Performance and Costs

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorKurnitski, Jarek, Adj. Prof., Aalto University, Finland
dc.contributor.authorTaebnia, Mehdi
dc.contributor.departmentRakennustekniikan laitosfi
dc.contributor.departmentDepartment of Civil Engineeringen
dc.contributor.labIndoor Environmenten
dc.contributor.schoolInsinööritieteiden korkeakoulufi
dc.contributor.schoolSchool of Engineeringen
dc.contributor.supervisorSalonen, Heidi, Assoc. Prof., Aalto University, Department of Civil Engineering, Finland
dc.date.accessioned2021-12-04T10:00:12Z
dc.date.available2021-12-04T10:00:12Z
dc.date.defence2021-12-17
dc.date.issued2021
dc.descriptionDefence is held on 17.12.2021 12:00 – 15:30 Zoom https://aalto.zoom.us/j/68812184033
dc.description.abstractThis study concentrates on methodologies and practical solutions to improve energy performance in indoor ice rink arenas and increase buildings' energy flexibility to reduce their energy costs. The objectives of the study are as follows: 1) to investigate how the temperature gradient impacts the heat load towards the ice pad and evaluate the effects of various air handling unit (AHU) layouts on energy consumption, particularly at the cooling coil section; 2) to develop a simplified calculation methodology/tool based on a steady-state analysis in order to roughly calculate the energy demands/costs and primary energy in such arenas; 3) to develop a price-based control approach for reducing the energy costs of a residential building equipped with an electric heater, a geothermal heat pump, a solar thermal collector and a thermal storage unit; and 4) to develop a qualitative control method based on both varying electricity prices and the predicted outdoor weather data. The control algorithm evaluates a building's energy needs for the next several hours with the aid of a weather forecast. The building performance simulation program, IDA Indoor Climate and Energy (IDA-ICE), was mainly conducted to obtain the results of ice rink arenas, and field measurements were implemented to validate the simulation models. The obtained simulation results were used to validate the calculator and determine its accuracy. The results of the control methods were also obtained by conducting a Transient System Simulation (TRNSYS) and simultaneously implementing the control algorithm into the simulation environment. The controllers' strategy was to forward or delay thermal and electricity loads in response to electricity price variations. The results reveal that ice rink refrigeration energy demand can be considerably decreased if the indoor temperature gradient approaches 1°C/m. To achieve this gradient, properly located and zoned air distribution solutions are proposed. Cooling and dehumidification energy demands reduced remarkably in the studied ice rink by 59.5% just by changing the location of the cooling coil in AHU. The applicability of the developed calculator is verified with reasonable accuracy in computing yearly energy costs, refrigeration and space heating demands and with a moderately higher deviation in cooling/dehumidification demands where a steady-state analysis is prone to considerable inaccuracy. According to the results of the price-based control method, the yearly cost of electricity can decrease considerably: in the studied case, by up to 11.6% by effectively shifting the loads, particularly during cold seasons. The qualitative control method reduces energy costs by 12.2%, which are further decreased by increasing the thermal storage capacity. Generally, the load-shifting concept can be applied as a potential benefit in any building. It should be noted that the price signal and its fluctuations, which may vary significantly in different countries, have aconsiderable impact on the attained cost reduction rate.en
dc.format.extent124 + app. 86
dc.format.mimetypeapplication/pdfen
dc.identifier.isbn978-952-64-0637-4 (electronic)
dc.identifier.isbn978-952-64-0636-7 (printed)
dc.identifier.issn1799-4942 (electronic)
dc.identifier.issn1799-4934 (printed)
dc.identifier.issn1799-4934 (ISSN-L)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/111418
dc.identifier.urnURN:ISBN:978-952-64-0637-4
dc.language.isoenen
dc.opnBales, Chris, Prof., Dalarna University, Sweden
dc.opnGeorges, Laurent, Assoc. Prof., Norwegian University of Science and Technology, NTNU, Norway
dc.publisherAalto Universityen
dc.publisherAalto-yliopistofi
dc.relation.haspart[Publication 1]: Mehdi Taebnia, Sander Toomla, Lauri Leppä, and Jarek Kurnitski, “Air Distribution and Air Handling Unit Configuration Effects on Energy Performance in an Air-Heated Ice-Rink Arena,” Energies, 2019, 12(4), 693. Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201903112205. DOI: 10.3390/en12040693
dc.relation.haspart[Publication 2]: Mehdi Taebnia, Sander Toomla, Lauri Leppä, and Jarek Kurnitski, “Developing energy calculation methodology and calculation tool validations: Application in air-heated ice rink arenas,” Energy and Buildings, 2020, 226 110389. Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-202008214817. DOI: 10.1016/j.enbuild.2020.110389
dc.relation.haspart[Publication 3]: Mehdi Taebnia and Jouko Pakanen, “Qualitative cost-conscious control of combined energy sources in a residential building,” Journal of Renewable and Sustainable Energy, 2018, 10(2), 024102. Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-201811025583. DOI: 10.1063/1.5001923
dc.relation.haspart[Publication 4]: Mehdi Taebnia, Marko Heikkilä, Janne Mäkinen, Jenni Kiukkonen-Kivioja, Jouko Pakanen, Jarek Kurnitski, “A Qualitative Control Approach to Reduce Energy Costs of Hybrid Energy Systems: Utilizing Energy Price and Weather Data,” Energies, 2020, 13, 1401. Full text in Acris/Aaltodoc: http://urn.fi/URN:NBN:fi:aalto-202004032723. DOI: 10.3390/en13061401
dc.relation.ispartofseriesAalto University publication series DOCTORAL DISSERTATIONSen
dc.relation.ispartofseries180/2021
dc.revBales, Chris, Prof., Dalarna University, Sweden
dc.revGeorges, Laurent, Assoc. Prof., Norwegian University of Science and Technology, NTNU, Norway
dc.subject.keywordenergy flexibilityen
dc.subject.keywordbuilding energy performanceen
dc.subject.keywordenergy calculatoren
dc.subject.otherCivil engineeringen
dc.titleSimulation of Advance Thermal Processes in Buildings to Optimise Energy Performance and Costsen
dc.typeG5 Artikkeliväitöskirjafi
dc.type.dcmitypetexten
dc.type.ontasotDoctoral dissertation (article-based)en
dc.type.ontasotVäitöskirja (artikkeli)fi
local.aalto.acrisexportstatuschecked 2021-12-17_1557
local.aalto.archiveyes
local.aalto.formfolder2021_12_03_klo_15_21
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