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Civil engineering, Construction engineering, Municipal and structural engineering, Thermodynamics, Materials engineering, Energy and fuels
Accurate understanding of the thermal behaviour of building components is essential for predicting heat-ing or cooling needs and facilitates the implementation of more successful energy saving strategies and retroﬁts. This paper focuses on a speciﬁc measure commonly introduced through the residential energy efﬁciency retroﬁt programmes in Ireland–insulation. Traditionally, assessments of the performance of building envelopes have been based on assumed thermal resistances of the materials involved, labora-tory tests and computer modelling. The aim of the present work is to investigate the in situ thermal behaviour of a case study building and its components under transient and quasi-steady environmental conditions, comparing data before and after the ﬁxing of cavity wall and ceiling insulation. The paper concludes by proposing that predicted values of heat loss using standardised assumed material prop-erties of the existing structure do not reﬂect the actual values achieved in situ for this test case. These values greatly overestimated the impact of the retroﬁtted insulation on heat loss through the ceiling and wall.
Byrne, A., Byrne, G., Davies, A. and Robinson, A. J. (2013) 'Transient and quasi-steady thermal behaviour of a building envelope due to retrofitted cavity wall and ceiling insulation', Energy and Buildings, 61(1), 356-365. doi;10.1016/j.enbuild.2013.02.044
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