Mathematical modeling of air velocity in technological module for growing broilers using tunnel ventilation system
2020
Plaksin, I., Federal Scientific Agroengineering Centre VIM, Moscow (Russian Federation) | Trifanov, A., Federal Scientific Agroengineering Centre VIM, Moscow (Russian Federation) | Plaksin, S., Novosibirsk State Pedagogical Univ. (Russian Federation)
Small-scale poultry enterprises today are a significant part of the Russian economy. They perform important socio-demographic functions contributing to the preservation and development of rural areas. In addition, poultry farming is the only alternative to pig farming in terms of production intensity and output. However, currently, there are no technical, technological and space-planning solutions for small-scale poultry farms, which would provide a quick start-up of production, minimal labour costs and maximal use of the genetic potential of birds. In this context, a technological module for growing chicken broilers was designed and manufactured. A mathematical model was created to determine the air velocity in the technological module by the mass, momentum and energy conservation equations. The technological module was equipped with a cage battery with three identical tiers. Each tier was supplied with an air inlet and two exhaust fans forming a tunnel ventilation system. The capacity of each fan was 900 m**3∙hE−1 according to the designing recommendations for poultry houses. The airflow was computer-simulated within one tier. The applied decomposition method was based on an implicit difference scheme, which had a second-order approximation in spatial variables and a firstorder approximation in time. The installed fans were found to comply with all the requirements for the parameters of the designed ventilation system. Namely, they complied with the restriction of the air velocity inside the cage battery tier not to exceed 1 m∙sE−1. In addition, the study results allowed choosing the optimal system for forced removal of exhaust air from the cage battery tier in the technological module for broiler chicken growing.
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