BRE IP6/03 PDF

Supply air windows provided pre-heated ventilation air by partially reclaiming heat normally lost to the outside and by collecting solar gains. Low effective U-values can be achieved by optimising the configuration of the glazing. Coupled with a passive stack ventilation (PSV) system, supply air windows can reduce overall energy consumption and improve indoor air quality. This Information Paper describes the development of supply air windows and summarises recent research work by BRE and the Martin Centre. It also presents the results of a modelling study carried out for the design of a PSV system with supply air windows, which has been incorporated in two demonstration houses for a DTI Partners in Innovation project: Guidelines for implementation of an innovative whole-house ventilation system and its comparison with established approaches to house ventilation.