Publication result detail

The Assessment of Construction Details in Terms of 3D Thermal Fields and the Impact on Building Design

KALOUSEK, M.; NOVÁK, M.

Original Title

The Assessment of Construction Details in Terms of 3D Thermal Fields and the Impact on Building Design

English Title

The Assessment of Construction Details in Terms of 3D Thermal Fields and the Impact on Building Design

Type

Paper in proceedings (conference paper)

Original Abstract

Thermal bridge is a very common and undesirable phenomenon in a building. Thermal joint (bridge) is usually based on material or geometry reasons or their combinations. Many types (connection of window – wall, pillar – wall), can be calculated and evaluated sufficiently in 2D section, but in some types it is necessary to take into account 3D heat conduction. For example: a corner with ceiling (roof) and two walls where is strong deformation of isotherms and the internal surface temperature is definitely lower than in 2D section. According to the Czech Technical Standard it is necessary to fulfil law requirement – Temperature Factor at internal surface lowest temperature "at each location". Recommendation is solving of "differential equation multi-dimensional of thermal field". In this case of "building corner" project engineer has to decide for 3D modelling. In the contribution there is presented a mistake in 2D model, the situation when it is necessary to use 3D model. Additionally, there are recommendations to eliminate the risk of condensation and mould.

English abstract

Thermal bridge is a very common and undesirable phenomenon in a building. Thermal joint (bridge) is usually based on material or geometry reasons or their combinations. Many types (connection of window – wall, pillar – wall), can be calculated and evaluated sufficiently in 2D section, but in some types it is necessary to take into account 3D heat conduction. For example: a corner with ceiling (roof) and two walls where is strong deformation of isotherms and the internal surface temperature is definitely lower than in 2D section. According to the Czech Technical Standard it is necessary to fulfil law requirement – Temperature Factor at internal surface lowest temperature "at each location". Recommendation is solving of "differential equation multi-dimensional of thermal field". In this case of "building corner" project engineer has to decide for 3D modelling. In the contribution there is presented a mistake in 2D model, the situation when it is necessary to use 3D model. Additionally, there are recommendations to eliminate the risk of condensation and mould.

Keywords

thermal bridge, 3D model, corner, temperature factor, condensation, mould

Key words in English

thermal bridge, 3D model, corner, temperature factor, condensation, mould

Authors

KALOUSEK, M.; NOVÁK, M.

Released

01.06.2019

Publisher

IOP Publishing Ltd

Location

Praha

ISBN

9781510890770

Book

Central Europe towards Sustainable Building (CESB19), IOP Conference Series: Earth and Environmental Science

Edition

290

ISBN

1755-1307

Periodical

IOP Conference Series: Earth and Environmental Science

Volume

290

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

124

Pages to

133

Pages count

7

URL

https://iopscience.iop.org/article/10.1088/1755-1315/290/1/012097/pdf

BibTex

@inproceedings{BUT163686,
  author="Miloš {Kalousek} and Michal {Novák}",
  title="The Assessment of Construction Details in Terms of 3D Thermal Fields and the Impact on Building Design",
  booktitle="Central Europe towards Sustainable Building (CESB19), IOP Conference Series: Earth and Environmental Science",
  year="2019",
  series="290",
  journal="IOP Conference Series: Earth and Environmental Science",
  volume="290",
  number="1",
  pages="124--133",
  publisher="IOP Publishing Ltd",
  address="Praha",
  doi="10.1088/1755-1315/290/1/012097",
  isbn="9781510890770",
  issn="1755-1307",
  url="https://iopscience.iop.org/article/10.1088/1755-1315/290/1/012097/pdf"
}