Simulation and optimization of the air distribution of large stacked cage broiler coop
Aiming to solve the problem of uneven temperature distribution in transitional ventilation mode of large stacked cage broiler coop,a three-dimensional mathematical model was established through field measurement.The computational fluid dynamics(CFD)meth-od was adopted to simulate and analyze the air distribution of experimental broiler coop,and an improved scheme was proposed and tested for verification.The results showed that the air distribution in the broiler coop was uneven;most of the air flowed out of the house from the space above the broiler coop,failing to fully exchange heat with the broilers.The tem-perature difference in the length direction of the broiler coop was large,and the maximum temperature difference between the front and the back reached 4℃,which brought difficulty to the overall control.The airflow velocity in the living area of broilers could be significantly increased by installing the deflector under the ceiling.The average wind speed in the living area of broilers was increased by 29%—61%,which effectively improved the outdoor air uti-lization rate and the heat transfer efficiency of the broiler coop and consequently the tempera-ture difference between the front and the back was controlled within 2℃.The research showed that the reasonable use of the deflector under the ceiling could effectively improve the air distribution of the broiler coop and make the temperature in the broiler coop maintain good uniformity.
broiler cooptransitional ventilationCFDair distribution
NETL
NSTL
万方数据
维普
