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Archiv článků od 1.6.2009 do 5.10.2009

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5.10.2009
Ing. Ondřej Šikula, Ing. Olga Rubinová, Ph.D., VUT v Brně, Fakulta stavební, Ústav technických zařízení budov

Solar collector is designed to obtain part of heating requirements of the buildings from the sun. Air-type collector that use air as the heat transfer medium is one of the simplest methods of solar heating. This solar heating technique can be made part of house design and construction.

5.10.2009
Ing. Viktor Zwiener, Ph.D., DEKPROJEKT s.r.o.

The examination method Blower-Door test (fan pressurisation method) is used for measurements of air permeability of buildings and is also used for leakage detection. The result of the measurement is air leakage rate at the pressure differential across the building envelope of 50 Pa. The article points out leaky details which often appear at constructions. The article shows the possibility of using infrared camera and anemometer for leakage detection.

14.9.2009
Doc.Ing. Václav Kupilík, CSc

Growing interest insulation very often results in choosing companies with low price for materials and installation, without considering whether technological standards are observed. The analysis of defects occurring in contact insulation systems should warn investors on how to proceed when choosing a supplier, so as to avoid claims for the resulting defects, or in a extreme case, so the insulation will not have to be replaced. It also wants to draw the attention of suppliers and designers towards those major faults when installing the contact insulation, and bring awareness to the general public about deficiencies that could arise, in particular with the implementation of contracts with no technical supervision.

7.9.2009
Ing. Marcela POČINKOVÁ, Ph.D., Ing. Olga RUBINOVÁ, Ph.D.

Thermographic measurements and their subsequent diagnosis are a relatively quick method of non contact evaluation of buildings related to heating technology. Thermal images show complex temperature fields with optional colour scales and are thus very easy to understand even for a layman. The assessment and analysis of the temperature distribution allow the identification of places with elevated heat flow.

1.6.2009
Ing. Jiří Nováček, Ph.D., Stavební fakulta, ČVUT v Praze

Different prediction methods for the Sound Reduction Index of single building structures in laboratory conditions and for the Apparent Sound Reduction Index in buildings are presented in following paper. A short discussion of methods is done regarding to input data, assumptions of calculations etc. The main part of this paper is focused on a comparison between predicted and measured results, which leads to evaluation of methods´ accuracy. This paper is based on author´s PhD thesis.


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