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An engineering approach to modelling of dynamic insulation using ESP-r

Samuel, A.A.A. and Imbabi, M. and Peacock, A. and Strachan, P.A. and Strachan, Paul (2003) An engineering approach to modelling of dynamic insulation using ESP-r. In: Proceedings of the Worldwide CIBSE/ASHRAE Building Sustainability, Value and Profit Conference. Chartered Institute of Building Service Engineers (CIBSE).

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The use of Dynamic Insulation (DI) can enable recovery of conduction heat loss through a building envelope. This is an active process that allows air to move through the fabric against the temperature gradient. Additionally it promises better indoor air quality, primarily due to filtration properties of the construction material [11]. This paper is concerned with quantifying the energy savings and enhancement of human comfort if this technology is integrated into a building. To ascertain the impact of the technology on whole-building performance, it is necessary to undertake detailed dynamic modelling. A suitable building and plant simulation computer tool (ESP-r) was employed to do this. A technique for modelling the dynamic insulation was developed and validated against known analytical solutions. A full-size test house was then simulated, in the UK climate, with and without DI. Comparative results show that better thermal comfort and energy savings are possible with the use of DI. The results obtained have been translated into suggestions for best practice.