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Energy Centre at the University of Northampton Waterside Campus


Louvres make the grade


In the education sector, getting ventilation right and ensuring a healthy and comfortable environment has never been more important. Andy Moul of Construction Specialties looks at key factors which need to be taken into consideration when specifying external louvres as part of a building’s ventilation solution


External louvre systems have an important part to play in ventilation strategies, and their particular performance characteristics need to be taken into consideration alongside aesthetic requirements


WWW.ARCHITECTSDATAFILE.CO.UK V


entilation design is a balancing act between delivering a high quality of air and thermal comfort, while


maintaining energy efficiency standards and noise control. Ease of maintenance and long term operational costs of running the system add to the complexity. Published in 2018, a revised Building Bulletin 101 (BB101) – ‘Guidelines on ventilation, thermal comfort and indoor air quality in schools’ – places an emphasis on ventilation strategies in educational facilities. Although not a legal requirement in itself, BB101 is referenced in Approved Documents Part F (‘means of ventilation’)


and L2A (‘conservation of fuel and power’) of the Building Regulations and sets out detailed guidelines for ventilation rates in different building areas, delivering improved air quality and achieving adaptive thermal comfort. Since the document also stipulates a requirement for a controllable and draught-free air supply, it means that windows, which have traditionally been used to provide fresh air to a room, should no longer be seen as a sole method of ventilation. BB101 looks in detail at different ventilation strategies, from natural, through hybrid or mixed mode, to mechanical


ADF JUNE 2021


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