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PLÁŠEK, J. ŠIKULA, O.
Original Title
Transient Numerical Simulation of Linear Thermal Transmittance in Software CalA
Type
conference paper
Language
English
Original Abstract
Calculation of heat losses of buildings according to European standard EN ISO 10211 and Czech standard ČSN 73 0540 is simplified to one-dimensional time-steady heat conduction through the building construction in direction of the largest temperature gradient. This simplification of the calculation is incorrect in case of complex geometry. Calculation according to norm takes into account this inaccuracy and uses Linear Thermal Transmittance in 2D geometry or Point Thermal Transmittance in the 3D geometry as a calculation correction. This contribution is focused on detailed calculation of linear thermal transmittance in case of contact external peripheral wall and plastic window frame. Results of two-dimensional transient numerical simulation show unsteady linear thermal transmittance in time and dependence on solar radiation. All of these variable boundary conditions can be easily simulated in the software CalA as well as complex geometry.
Keywords
Transient Numerical Simulation; Linear Thermal Transmittance; Software CalA
Authors
PLÁŠEK, J.; ŠIKULA, O.
RIV year
2014
Released
13. 10. 2014
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
978-3-03835-280-8
Book
Envibuild 2014
Edition
Edition number
1041
1022-6680
Periodical
Advanced Materials Research
Year of study
Number
State
Swiss Confederation
Pages from
281
Pages to
284
Pages count
4
BibTex
@inproceedings{BUT109760, author="Josef {Plášek} and Ondřej {Šikula}", title="Transient Numerical Simulation of Linear Thermal Transmittance in Software CalA", booktitle="Envibuild 2014", year="2014", series="2014", journal="Advanced Materials Research", volume="2014", number="1041", pages="281--284", publisher="Trans Tech Publications", address="Switzerland", doi="10.4028/www.scientific.net/AMR.1041.281", isbn="978-3-03835-280-8", issn="1022-6680" }