Detail publikace

Heat losses of window compact shutters

FICKER, T.

Originální název

Heat losses of window compact shutters

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

Window shutters are usually made of wood. They protect glazed windows at their external sides from mechanical damages and inconvenient weather conditions. A typical window compact shutter is described and its thermal properties are discussed. In winter season, the heat transfers inside the window shutters represent unwanted heat losses. These transfers of heat are caused especially by convection and radiation running between the warm glazed side of the window to the cold external side of the shutter and through this external side into outdoor space. The heat transfers are computed on the basis of physical relations. The computation of convective heat transfer is based on the correlation relations utilizing Rayleigh`s and Prandtl’s numbers. The radiative transfer is computed by means of the Stefan-Boltzmann law and the Kirchhoff law. The thermal resistance of the typical shutter is derived. It is shown that this resistance is temperature dependent. It is the radiation that is responsible for the temperature dependency of the thermal resistance of compact window shutters. The formula for thermal resistance derived in this contribution may assist the building technologists to evaluate insulation capabilities of similar compact shutters possessing comparable geometric dimensions and similar thermal emissivities.

Klíčová slova

Heat losses;window; window shutters;convection; radiation.

Autoři

FICKER, T.

Vydáno

9. 12. 2020

Nakladatel

IOP Publishing

Místo

London

ISSN

1757-8981

Periodikum

IOP Conference Series: Materials Science and Engineering

Ročník

960

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

5

Strany počet

5

URL

https://iopscience.iop.org/article/10.1088/1757-899X/960/2/022021/pdf

Plný text v Digitální knihovně

http://hdl.handle.net/11012/196544

BibTex

@inproceedings{BUT169546,
  author="Tomáš {Ficker}",
  title="Heat losses of window compact shutters",
  booktitle="5th World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium, WMCAUS 2020",
  year="2020",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="960",
  number="1",
  pages="1--5",
  publisher="IOP Publishing",
  address="London",
  doi="10.1088/1757-899X/960/2/022021",
  issn="1757-8981",
  url="https://iopscience.iop.org/article/10.1088/1757-899X/960/2/022021/pdf"
}