- Title
- Assessment of thermal performance of two masonry walling designs for housing using a combined theoretical and experimental approach
- Creator
- Gregory, K. E.; Moghtaderi, B.; Page, A.; Sugo, H.
- Relation
- 2nd Canadian Conference on Effective Design of Structures. CCESD-II: 2nd Canadian Conference on Effective Design of Structures: Sustainability of Civil Engineering Structures (Hamilton, Canada 20-23 May, 2008) p. 641-650
- Relation
- http://cceds.mcmaster.ca/index.php/cceds/2008/paper/view/22
- Publisher
- Centre for Effective Design of Structures, McMaster University
- Resource Type
- conference paper
- Date
- 2008
- Description
- The thermal performance of a series of conventional and novel masonry wall designs and light weight constructions was analysed through a combined theoretical and experimental approach in terms of thermal mass utilisation. Two software packages have been used during the theoretical investigation. These include the commercially available energy rating tool known as AccuRate, developed by the Australian Commonwealth Scientific and Industrial Research Organisation (CSIRO), and The University of Newcastle Package. These packages allow for the environmental impact of a building to be measured and quantified. Conventional and novel uniform walling systems were examined to give an insight into the energy efficiency of existing and innovative walling systems. Experimental studies consisted of a bench scale model that has been designed to gain a comparison between different walling systems with a known heat input. In a series of preliminary studies, data from theoretical and bench scale studies was compared using two parameters known as thermal lag and decrement factor. Thermal mass causes a time delay in the heat flow known as the thermal lag. The decrement factor can be taken to represent the reduction in amplitude of the heat wave at the inside surface compared to the outside surface. Results from theoretical and experimental studies found that thermal behaviour was greatly influenced by thermal mass and particularly in constructions that contained their thermal mass within a protective envelope of insulation, in this case Reverse Brick Veneer and Cavity Brick constructions. Preliminary theoretical results indicated that if the effects of thermal lag are to be maximised, as the area of north-facing glazing increases, the amount of heat-storing material internally needs to increase, proportionally.
- Subject
- thermal mass; decrement factor; energy efficiency; building
- Identifier
- uon:6202
- Identifier
- http://hdl.handle.net/1959.13/802785
- Identifier
- ISBN:0973803532
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