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Design and performance of controlled natural ventilation in school gymnasiums

2016; Taylor & Francis; Volume: 16; Issue: 2 Linguagem: Inglês

10.1080/14733315.2016.1220202

2044-4044

Flourentzos Flourentzou, Samuel Pantet, Katia Ritz,

Wind and Air Flow Studies

For zero and low energy buildings, high-energy efficiency ventilation is very often confused with a complex mechanical ventilation system with heat recovery. In school gymnasiums, where large volumes have to be ventilated, and where intermittent occupation is very usual, demand-controlled natural ventilation has several advantages, making this technique attractive. High stack height makes natural ventilation very efficient. Natural ventilation is attractive for architects because of no ducts, no apparent mechanical components and low-cost. The article shows the design concept of controlled natural ventilation for a high-energy performance school gymnasium (Minergie® labeled), situated in Saviese-Switzerland. Several months of monitoring shows the high level of comfort and air quality, that controlled natural ventilation provides in this type of buildings, during winter and summer. Simulations, comparing the purely naturally ventilated hall with a fully mechanical system and a hybrid one, show the energy performance of the different ventilation systems. A life cycle assessment shows that controlled natural ventilation has comparable and even better performances than a heat recovery system.