Microclimate and ventilation in Estonian and Finnish dairy buildings |
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Authors: | Frederick K Teye Mikko Hautala Matti Pastell Jaan Praks Imbi Veermäe Väino Poikalainen Aime Pajumägi Tapani Kivinen Jukka Ahokas |
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Affiliation: | 1. University of Helsinki, Department of Agrotechnology, P.O. Box 28 (Koetilantie 3), 00014 Helsinki, Finland;2. Estonian University of Life Sciences, Institute of Veterinary Medicine and Animal Sciences, Kreutzwaldi 62, 51014 Tartu, Estonia;3. Estonian University of Life Sciences, Institute of Forestry and Rural Engineering, Kreutzwaldi 5, 51014 Tartu, Estonia;4. Agrifood Research Finland, Animal Production Research, Vakolantie 55, 03400 Vihti, Finland |
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Abstract: | A series of ventilation, thermal and indoor air quality measurements were performed in 14 different dairy buildings in Estonia and Finland. The number of animals in the buildings varied from 30 to 600. Measurements were made all year round with ambient temperatures ranging between −40 °C and +30 °C. The results showed that microclimatic conditions in the dairy buildings were affected by the design of the building, outside temperature, wind, ventilation and manure handling method. The average inside air concentration of carbon dioxide was 950 ppm, ammonia 5 ppm, methane 48 ppm, relative humidity 70% and inside air velocity was 0.2 m/s. Although occasionally exceeded, the ventilation and average indoor air quality in the dairy buildings were mainly within the recommended limits. |
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Keywords: | Microclimate Thermal comfort Indoor air Ventilation Cold Warm Uninsulated Semi-insulated Barns Dairy buildings |
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