Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/83304
Type of publication: Straipsnis konferencijos medžiagoje kitose duomenų bazėse / Article in conference proceedings in other databases (P1c)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Kavolėlis, Bronius;Bleizgys, Rolandas;Čėsna, Jonas
Title: Method for Calculation Parameters Natural Ventilation System of Animal House
Is part of: Proceedings of the international conference "Biosystems engineering and processes in agriculture" , No. 13 (2008)
Extent: p. 196-201
Date: 2008
Abstract: Ventilation is a key element in the successful operation of any animal production facility. In designing a natural ventilation system for animal house it is necessary to assess the ventilation induced by thermal buoyancy and wind forces. The ratio of thermal buoyancy and wind was established and the methodology was prepared to forecast ventilation intensity based on the calculations of air speed in inlet and outlet openings. The equation was formed to calculate the ratio of size inlet and outlet areas. The accuracy of the methodology was approved by experimental research under natural conditions of barn operation. The difference between the experimental and calculated air speed values in the outlet opening was insignificant and was within 0-8 % range. According to the analytical and experimental research results it was calculated that in a typical animal house air speed in the aperture of the rooftop there is 1.3 rn/s (when there is no wind, this speed decreases to 0.3 m/s), ratio ventilation rate of thermal buoyancy and wind forces - 0.27; and in order to have all air removed through the rooftop aperture in winter, the area of inlets in the walls does not have to exceed 40 % of the rooftop aperture area
Internet: https://hdl.handle.net/20.500.12259/83304
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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