Investigation of the Indoor Environment in a Passive House Apartment Building Heated by Ventilation Air

MathiasYoung Bok Lysholt Hansen, Chrysanthi Sofia Koulani, Ruut Hannele Peuhkuri, Jørn Toftum

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Abstract

Experience has shown that appropriate design of very low energy dwellings can be a large challenge and that the final design may result in insufficient heating in winter and overheating in summer. The 126 certified Passive House apartments (Ravnsborghusene) in Køge, Denmark are a low energy building project finished medio 2012. The design challenge was met with a concept of air heating that is individually controlled in every room. It also applies external solar shading. This study used indoor climate measurements and dynamic simulations in one of these apartment buildings to evaluate thermal comfort and the performance of the air heating system and solar shading. Thermal comfort category B according to ISO 7730 was obtained in the building during field measurements, indicating that the air heating system was able to maintain comfort conditions in winter, when the outdoor temperature had been unusual low for a longer period. The dynamic simulations also indicated that air heating during winter can provide a comfortable thermal environment. Dynamic simulations also demonstrated that during summer, apartments with automatic external solar screens had no serious overheating, whereas in apartments with south oriented windows, static shadings by the balcony overhangs and low ventilation rates, resulted in excessive hours of overheating.
Original languageEnglish
Title of host publicationProceedings of 10th Nordic Symposium of Building Physics
EditorsJesper Arfvidsson, Lars-Erik Harderup, Anders Kumlin, Bitte Rosencrantz
Number of pages8
PublisherLund University
Publication date2014
Article numberA2809
ISBN (Electronic)978-91-88722-53-9
Publication statusPublished - 2014
Event10th Nordic Symposium on Building Physics - Lund, Sweden
Duration: 15 Jun 201419 Jun 2014
Conference number: 10
http://www.nsb2014.se/

Conference

Conference10th Nordic Symposium on Building Physics
Number10
CountrySweden
CityLund
Period15/06/201419/06/2014
Internet address

Keywords

  • Low energy building
  • Passive House
  • Warm air heating
  • Thermal comfort
  • Solar shading
  • Field measurements
  • Dynamic building simulation

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