Ventilated wooden roofs: Influence of local weather conditions-measurements
Journal article, Peer reviewed
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Original versionEnergy Procedia. 2017, 132, 777-782. 10.1016/j.egypro.2017.10.029
This study investigates the influence of temperature and air velocity conditions on ventilation and condensation in spring, summer and autumn periods inside a ventilated cavity in a full-scale wooden roof construction. The roof has 81 thermocouples, four air velocity measurement devices, and a weather station to record temperature and wind velocity. The temperature measurements show large periods of below-ambient temperature, especially during the spring and autumn. A strong correlation exists between the wind speed and air velocity inside the air cavity. Eave-to-eave ventilation was found to be effective, even with a roof angle of 40°.