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Heating energy consumption, heat losses and heating energy saving possibilities in case broiler house in Finland

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  Paper number  131610092,  2013 Kansas City, Missouri, July 21 - July 24, 2013. (doi: @2013
Authors:   Mari Tuulia Rajaniemi, Juuso Väinö Vihtori Tuure, Jukka Matias Ahokas
Keywords:   Heating broiler production energy saving heat losses energy consumption

Abstract. Heating energy is the biggest direct energy input in broiler house. Energy consumption of heating varies lot between growing weeks, but also between different seasons. Indoor and outdoor temperature differences and age of birds have a big effect on heating energy consumption. Heating energy is also high economical cost for farmers and therefore energy monitoring and saving measures are needed to decrease energy consumption on broiler farms. Object of this study was to measure heating energy consumption of broiler house and find out energy saving possibilities. Heating energy consumption was measured in one broiler house which is located in Southern Finland. Also heat losses through structures and ventilation were calculated. Heating energy measurements started on January 2011 and data was collected from 12 broiler batches. The measurements were done in a concrete built broiler house with heat insulation and fully enclosed system. About six broiler batches with 26

000 birds per batch were grown annually. Birds reached approximately 1.8 kg carcass weight after the 38 days growing period. House was pre-heated to 33°C when birds arrived and temperature was decreased stepwise to 20°C by the end of the growing period. House was heated mainly on renewable energy. Heating was needed year-round. Heating energy consumption during the broiler batch and pre-heating were on average 1.34 kWh per 1 kg of carcass weight and 64.4 MWh per batch. Heating energy consumption varied a lot between batches and growing weeks. Age of bird and outdoor temperature had a big effect on energy use. A large amount of heat was lost through the ventilation especially at the end of growing period during cold seasons.

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