Detail publikace

On the surface degradation of building claddings caused by thermal radiation

ŠŤASTNÍK, S.

Originální název

On the surface degradation of building claddings caused by thermal radiation

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

The improvement of thermal technical properties of insulation layers is a crucial point of reconstruction of all building objects, in the first place of the large block of flats from the socialistic period in Czechoslovakia, with the aim to extend their lifetime. However, a typical phenomenon of such reconstruction is the occur-rence of algae on the outer surface of the new insulation system and conse-quently their surface degradation. This phenomenon can be explained by the night condensation of vapour from porous material structures, driven by the heat radiation, in Central European climatic conditions active namely in two "windows" in the infra-red wavelength range. The mathematical model of evolu-tion of temperature and moisture fields is based on the physical laws of conser-vation of mass and energy. The numerical simulation of this process, coming from the method of discretization in time and from the finite difference method, makes use of the original software, written in the Pascal code. The comparison of result from numerical simulation and laboratory experiments leads to some recommendations, how to avoid the algae coatings.

Klíčová slova

thermal irradiation, heat transfer, ETICS, algae

Autoři

ŠŤASTNÍK, S.

Rok RIV

2007

Vydáno

1. 9. 2007

Nakladatel

WTA DE

ISSN

1612-0159

Periodikum

WTA Journal

Ročník

2007

Číslo

2

Stát

Spolková republika Německo

Strany od

223

Strany do

238

Strany počet

14

BibTex

@article{BUT44502,
  author="Stanislav {Šťastník}",
  title="On the surface degradation of building claddings caused by thermal radiation",
  journal="WTA Journal",
  year="2007",
  volume="2007",
  number="2",
  pages="223--238",
  issn="1612-0159"
}