Life Cycle Energy Performance: Exploring the limits of passive low energy buildings

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Show simple item record Hernandez, Patxi Kenny, Paul 2012-11-02T16:22:45Z 2012-11-02T16:22:45Z 2008 ASN Events en 2008-09-21
dc.identifier.isbn 9780646503721
dc.description World Sustainable Building Conference (SB08), 2008, Melbourne, Australia, 21-25 September 2008 en
dc.description.abstract There is an increasing trend in reducing energy demand of buildings by improving building envelope thermal characteristics. Proven construction examples as used with the German PassivHaus standard achieve substantial reductions on the heating demand compared to mainstream construction, generally by using high levels of insulation together with ensuring excellent air tightness and minimizing of thermal bridges. However, the limits to which levels of insulation in a building can be increased and still represent overall life cycle energy savings are not clear. Particularly for temperate climates, adopting very-high insulation standards can lead to a danger of over specifying construction elements: once we reach certain levels of insulation, any extra material used can have larger energy costs or “embodied energy” than the energy it saves in the life cycle of the building. This paper presents the heating energy use of sample houses in the Irish maritime climate, and analyses the life cycle energy use including the embodied energy of the materials used. A 50-year perspective is presented, and conclusions about the limits to which the heating energy consumption can be lowered by “passive” means on a particular climate are drawn. This paper demonstrates the life-cycle benefits of optimizing the building design ensuring a correct orientation and sizing of the openings, but respecting certain limits when using energy intensive insulation materials. en
dc.description.sponsorship Irish Research Council for Science, Engineering and Technology en
dc.language.iso en en
dc.publisher ASN Events en
dc.relation.ispartof Foliente, G. et al. (eds.). Proceedings of the 2008 World Sustainable Building Conference en
dc.subject Life-cycle en
dc.subject Energy performance en
dc.subject Embodied energy en
dc.subject Passive en
dc.subject Low energy en
dc.subject.lcsh Life cycle costing en
dc.subject.lcsh Sustainable buildings--Energy consumption en
dc.subject.lcsh Sustainable buildings--Design and construction en
dc.subject.lcsh Dwellings--Energy consumption--Ireland en
dc.title Life Cycle Energy Performance: Exploring the limits of passive low energy buildings en
dc.type Conference Publication en
dc.internal.availability Full text available en
dc.status Peer reviewed en
dc.neeo.contributor Hernandez|Patxi|aut|
dc.neeo.contributor Kenny|Paul|aut|

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