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Air heating of passive houses in cold climates: Investigation using detailed dynamic simulations

Air heating of passive houses in cold climates: Investigation using detailed dynamic simulations

Kategori
Vitenskapelig artikkel
Sammendrag
The passive house (PH) standard was originally defined for Central Europe and has subsequently been applied to many cold climate countries. In these conditions, the relation between this standard and the air heating (AH) is not clear while both concepts are usually associated. Furthermore, the AH provides a way to simplify the space-heating distribution system. The present contribution investigates the feasibility of the AH concept in PH along with its challenges in terms of thermal dynamics: the magnitude of the AH temperature needed, the temperature difference between rooms, the impact of internal gains, the influence of thermal losses from ventilation ducts and the AH control. This is performed using detailed dynamic simulations (TRNSYS) on a typical detached house typology. Practically, four cold climate zones are considered as well as different insulation levels and construction materials. Results show limitations related to a centralized AH as well as provide guidelines for a consistent AH design in cold climates. In addition, a simple analytical method used for the design of German PH is tested and proved accurate enough to estimate the maximal AH temperature during the heating season. Copyright © 2014 Published by Elsevier Ltd.
Oppdragsgiver
  • Research Council of Norway (RCN) / 193830
Språk
Engelsk
Forfatter(e)
  • Laurent Georges
  • Monica Berner
  • Hans Martin Mathisen
Institusjon(er)
  • Norges teknisk-naturvitenskapelige universitet
  • SINTEF Energi AS
År
Publisert i
Building and Environment
ISSN
0360-1323
Forlag
Elsevier
Årgang
74
Hefte nr.
April
Side(r)
1 - 12