Solar energy augmented adaptive ventilation in historic buildings
2014 (English)In: NSB 2014 / [ed] Jesper Arfvidsson, Lars-Erik Harderup, Anders Kumlin, Bitte Rosencrantz, Lund, 2014, 648-655 p.Conference paper (Refereed)
Many historic buildings suffer from problems related to moisture and high relative humidity. Adaptive ventilation can be a low-energy and low impact solution to mitigate these problems. Previous studies have shown that adaptive ventilation can have a significant drying effect. However due to the covariance of temperature and absolute humidity in the outside air, the effect on relative humidity inside a buildings is limited in the short term. The present paper presents results from a medieval stone church where a novel integration of solar heating and adaptive ventilation has been implemented. Solar energy is collected in the day and stored. In the night, when the outside air generally is drier (in absolute terms), outside air is preheated using the energy stored in the daytime and added to the building.
The results show that adaptive ventilation can be a low-cost and low-energy option as compared to conventional humidity control.The average relative humidity and mould risk has decreased significantly. Auxiliary measures, such as dehumidification, would be needed, mainly in the summer. The energy from the photovoltaic elements has mitigated the cooling effect of the outside air.
Place, publisher, year, edition, pages
Lund, 2014. 648-655 p.
Adaptive ventilation, climate control, mould growth, historic buildings
IdentifiersURN: urn:nbn:se:uu:diva-268911ISBN: 978-91-88722-53-9OAI: oai:DiVA.org:uu-268911DiVA: diva2:881776
10th Nordic Symposium on Building Physics 15-19 June 2014 Lund, Sweden