Numerical Modeling of the Processes of Aerodynamics and Heat Transfer of Incoming Air in Poultry Houses

A new method of cooling outdoor air in ventilation systems of poultry houses is proposed, which is based on the use of water from underground wells and heat exchangers of recuperators for cooling supply air. Numerical modeling of aerodynamics and heat transfer processes in poultry houses with a tunnel ventilation system was carried out. As a result of numerical calculations, the distribution of temperatures, velocities and pressures in the air environment of the poultry house was obtained. The use of heat exchangers to cool the supply air makes it possible to maintain its temperature at + 20–25 ℃ and reduce the moisture content in poultry rooms, which are high when using cassette methods or spraying water with nozzles to cool the supply air. As a result of the conducted numerical studies, it is recommended to increase the air flow due to the inclusion of the third exhaust fan, which is located on the upper line of the rear end wall. This will make it possible to obtain a more uniform temperature distribution in the poultry house.