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Type of publication: 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;Čėsna, Jonas
Title: Rational cowshed roof insulating and ventilation system parameters
Is part of: Problemy intensyfikacji produkcji zwierzęcej z uwzględnieniem ochrony srodowiska i przepisow UE : materialy na IX międzynarodowe konferencję naukowe, Warszawa 23-24 wrzesnia 2003 r., 2003
Extent: p. 367-371
Date: 2003
Keywords: Mathematical dependence;Temperature difference;Heat transfer coefficient;Ventilation system parameter
ISBN: 8386264713
Abstract: It was composed the formula for calculating the heat transfer coefficient of a building surface. This formula integrally evaluates the heating balance of the building, incondensable water vapour condition, constructional and technological rates. When the density of animals keeping is at the law rate (the density of total flow of animals to ground is 90 W/m2) rational outside building surface heat transfer coefficient is 5W/(m2.K). When the rate of the density is high (150 W/m2), then rational wall heat transfer coefficient - 3.6 W/(m2.K). It was composed the formula for calculating the cowshed ventilation system parameters, depending on outdoor air temperature. While the outdoor air temperature is dropping from +20 C to -20 C, the area of cowshed vent should be reduced 85%
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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