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AUTHOR(S) DYNAMIC MODEL OF THE INDOOR CLIMATE INSIDE LIVESTOCK BUILDINGS: A CASE STUDY FOR FATTENING PIGS
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: No Citation available.
Authors: G. Schauberger, M. Piringer and E. Petz
Keywords: pig, indoor climate, simulation, livestock building
Indoor climate of livestock buildings is of importance for the well-being and health of animals and their production performance (daily weight gain, milk yield, etc.). By using a steady-state model for the sensible and latent heat fluxes and the CO 2 and odour mass flows, the indoor climate of mechanically ventilated livestock buildings can be calculated. These equations depend on the livestock (number of animals and how they are kept), the insulation of the building and the characteristics of the ventilation system (ventilation rate). Since the model can only be applied to livestock buildings whose ventilation systems are mechanically controlled (this is the case for a majority of pig fattening units), the calculations were done for a pig fattening unit with 1000 animal places. The model presented needs half-hour values of the outdoor parameters temperature and humidity, here collected for a two-year period, as input. The environment inside the livestock building is evaluated according to a comparison with recommended values for animals. Further, the duration of condensation of the inside surfaces is calculated. The sensitivity of the model is investigated by varying the livestock, the insulation and the ventilation system of the livestock building with the control unit.
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