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Saint-Gobain Energy House Phase 1 and Phase 2 

Investigations into a phased whole house retrofit in an environmental chamber

The Saint-Gobain Energy House Project was a two phase collaborative research project undertaken by the LSI in collaboration with the University of Salford and Saint-Gobain Recherché. It was the first full-scale retrofit project ever undertaken in a controlled environment in which the change in thermal performance resulting from the fabric retrofit of a Victorian solid wall house was measured.

Phase 1 of the project involved a staged programme of fabric retrofit to the test house. This allowed the impact of retrofit measures applied to individual thermal elements, combinations of elements, and a whole house retrofit, to be assessed. Phase 2 investigated the impact of a whole house fabric retrofit on the retrofitted test house and an untreated adjoining house.

In both Phase 1 and 2, quantitative measurements of thermal performance were obtained from the test house; these included the whole house heat loss value (heat transfer coefficient), in situ U-values, and the air permeability value. Qualitative data, such at thermography and construction observations, were gathered to gain greater understanding of the retrofit process and identify potential improvements to retrofit systems. Thermal modelling of all junctions was undertaken to assess the change in thermal bridging characteristics resulting from retrofit. The project also involved work to assess thermal comfort of occupants and experimental work to validate a new dynamic whole house heat loss test (QUB test).

Research Outputs

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