Engineering and economical analysis of enclosure systems for livestock buildings
2003
Strausa, S. (Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Rural Engineering. Dept. of Architecture and Building) | Jursevskis, J. (Latvia Univ. of Agriculture, Jelgava (Latvia). Faculty of Rural Engineering. Dept. of Architecture and Building)
The present paper describes new Latvian Building Standard LBN 002-01 "Heat engineering of the insulation construction of the building" which is based on European Codes and their use in designing insulation constructions for livestock buildings is connected with increased moisture, heat engineering of those buildings' insulation constructions are different from heat engineering solutions of dwelling houses and even other engineering buildings. Formulas of construction physics for ensuring microclimate in livestock buildings and factor U determining remaining heat and heat permeability are based on those formulas and summarized in the present paper. Examples are calculated mainly for buildings where milk cows are kept because there is more moisture in those buildings than in other livestock buildings and optimal temperature is lower. Connection between outside and inside temperatures, heat permeability factor U and air interchange dependant on moisture and CO2 are chosen while preparing the present paper. When factor U is determined the thickness of building's insulation constructions is calculated using computer programs estimating constructions' moisture excretion and desiccation. Economical estimation of wall and roof building materials widely used in Latvia is done.
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