Publication detail

Heat Flow through a Facede with a Controlled Ventilated Gap

RUBINA, A. UHER, P. VRÁNA, J. NOVOTNÝ, M. NESPĚŠNÝ, O. SKŘEK, D. ŠUHAJDOVÁ, E. VYSTRČIL, J. FORMÁNEK, M.

Original Title

Heat Flow through a Facede with a Controlled Ventilated Gap

Type

journal article in Web of Science

Language

English

Original Abstract

The article presents current research results in the field of airflow through a façade with a width of 1 m and a height of 13.7 m and with a ventilated gap, and its effect on the year-round heat balance of this façade. An idea to influence airflow in the ventilated gap of the façade is presented based on the results of developed software and the suitability of closing the air gap in winter and in the transition period of the year is described. First, the boundary conditions of the calculations, which are further used in the energy balance between the interior of the building and the exterior environment are defined. In order to include these influences, a discrete analytical calculation was created. It consists of the time distribution of the investigated thermal phenomena calculations. A significant finding is an obvious benefit of controlling the airflow through a ventilated gap in the winter and especially in the transitional period of the year. This technological knowledge has a high potential for energy savings related to the heating of buildings. As the calculations show, airflow control through a ventilated façade reduces heat flow by 25–30% on average, and in contrast, it increases heat gains by 20% and the specific values are presented within the article.

Keywords

ventilated facades, air flow, ventilated facade gap, thermal balance of the facade, FSVM software, boundary conditions

Authors

RUBINA, A.; UHER, P.; VRÁNA, J.; NOVOTNÝ, M.; NESPĚŠNÝ, O.; SKŘEK, D.; ŠUHAJDOVÁ, E.; VYSTRČIL, J.; FORMÁNEK, M.

Released

20. 3. 2023

Publisher

MDPI

Location

BASEL

ISBN

2075-5309

Periodical

Buildings

Year of study

13

Number

3

State

Swiss Confederation

Pages from

1

Pages to

20

Pages count

20

URL

https://www.mdpi.com/2075-5309/13/3/817

Full text in the Digital Library

http://hdl.handle.net/11012/213563

BibTex

@article{BUT183150,
  author="Aleš {Rubina} and Pavel {Uher} and Jakub {Vrána} and Miloslav {Novotný} and Ondřej {Nespěšný} and Daniel {Skřek} and Eva {Šuhajdová} and Jan {Vystrčil} and Marian {Formánek}",
  title="Heat Flow through a Facede with a Controlled Ventilated Gap",
  journal="Buildings",
  year="2023",
  volume="13",
  number="3",
  pages="1--20",
  doi="10.3390/buildings13030817",
  issn="2075-5309",
  url="https://www.mdpi.com/2075-5309/13/3/817"
}