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Type of publication: research article
Type of publication (PDB): Straipsnis recenzuojamoje užsienio tarptautinės konferencijos medžiagoje / Article in peer-reviewed foreign international conference proceedings (P1d)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Kavolėlis, Bronius;Bleizgys, Rolandas;Čėsna, Jonas
Title: Temperature and humidity regime of the uninsulated cowshed
Is part of: Problemy intensyfikacji produkcji zwierzęcej z uwględnieniem ochrony środowiska i standardów UE : materiały na konferencję, Warszawa 26-27 września 2006 r. Warszawa, 2006
Extent: p. 333-337
Date: 2006
Keywords: Cowshed;Thermal charakteristics;Temperature difference;Humidity
ISBN: 8386264713
Abstract: Having carried out the literature analysis it has been established that the relative air humidity in spacious cowsheds is often high and even exceeds the relative air humidity outside by 15 %. It is considered that the reason for high humidity is inadequate ventilation in the cowshed. The work objective is to substantiate reasoned values of temperature and humidity regime in a cowshed which are necessary in designing and operating a ventilation system. Analytical and experimental research methods have been applied using the principles of thermophysics. An equation relating relative humidity in a cowshed with the temperature difference between the inside and outside air has been drawn. Another equation showing the biggest allowed temperature difference to prevent condensation of water vapour on the internal surface of external barriers has been drawn. Analytical and experimental research has substantiated that probable minimum relative humidity in a cowshed is about 5 % lower than relative humidity outside. The reasoned temperature difference between the inside and outside air during cold season is about 4 °C, when the heat transfer rate of walls and roof was 4.5 W/(m2-K)
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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