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dc.contributor.authorMoran, Paul
dc.contributor.authorGoggins, Jamie
dc.contributor.authorHajdukiewicz, Magdalena
dc.identifier.citationMoran, Paul, Goggins, Jamie, & Hajdukiewicz, Magdalena. (2017). Super-insulate or use renewable technology? Life cycle cost, energy and global warming potential analysis of nearly zero energy buildings (NZEB) in a temperate oceanic climate. Energy and Buildings, 139, 590-607. doi:
dc.description.abstractThere are numerous strategies available to design and construct a low energy or nearly zero energy building (NZEB). However, the design strategy for a building depends on a high number of factors including location, climate, cost, available resources, etc. For instance, for countries like Ireland, which have a temperate oceanic climate, a key to achieving NZEB is a high thermal and air tightness performance of the building envelope, installing highly efficient space and water heating systems, and utilising renewable technologies for energy and heat generation. The challenge is to find the best combination of design strategies that would tackle the energy performance problems of a particular building. For example, is it better to design a super-insulated building with minimum heating requirements, or provide less insulation but install a large amount of renewable energy sources? This paper presents the outcomes of a number of case study buildings in Ireland, which focus on the life cycle cost and environmental analysis (using energy and global warming potential as indicators) of NZEBs using various heat sources, such as a gas boiler, biomass boiler, a domestic gas fired combined heat and power unit, heat pump and renewable technology. With the de-carbonisation and increased efficiency of the electricity grid, the low global warming potential (GWP) emissions of biomass fuels and the depletion of fossil fuels, future buildings should be (i) designed and constructed to be super-insulated with high air-tightness performance resulting in minimum heating requirements and (ii) operate with heating systems that have low impact on the natural environment, such as a biomass boiler or heat pump.en_IE
dc.description.sponsorshipThe authors would like to acknowledge the support of Science Foundation Ireland through the Career Development Award programme (Grant No. 13/CDA/2200) and the European Commission Horizon 2020 project Built2Spec (637221).en_IE
dc.relation.ispartofEnergy And Buildingsen
dc.subjectNearly zero energy buildingsen_IE
dc.subjectLife cycle energyen_IE
dc.subjectLife cycle greenhouse gas emissionsen_IE
dc.subjectLife cycle costen_IE
dc.subjectEmbodied energyen_IE
dc.subjectEmbodied global warming potentialen_IE
dc.subjectEnergy performanceen_IE
dc.subjectElectricity griden_IE
dc.subjectEnergy pricesen_IE
dc.subjectRenewable energyen_IE
dc.titleSuper-insulate or use renewable technology? Life cycle cost, energy and global warming potential analysis of nearly zero energy buildings (NZEB) in a temperate oceanic climateen_IE
dc.contributor.funderScience Foundation Irelanden_IE
dc.contributor.funderHorizon 2020en_IE
dc.local.contactMagdalena Hajdukiewicz, Civil Engineering Eng 1023, Engineering Building, College Of Eng & Informatics, Nui Galway. Email:
dcterms.projectinfo:eu-repo/grantAgreement/SFI/SFI Career Development Award/13/CDA/2200/IE/Achieving nearly zero energy buildings - A life cycle assessment approach to retrofitting existing buildings (acronym: nZEB-RETROFIT)/en_IE
dcterms.projectinfo:eu-repo/grantAgreement/EC/H2020::RIA/637221/EU/Built to Specifications: Self-Inspection, 3D Modelling, Management and Quality-Check Tools for the 21st Century Construction Worksite/Built2Specen_IE

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