The Airflow Organization Research Of The Typical Broiler House In Cold Areas

As high speed development of the computer technology and computational fluid dynamics(CFD),using CFD technique to simulate the air distribution of a practical production room has become a mainstream.Poultry farming as an important content of agricultural industry has great market space and potential.The environment parameters of the broiler house can not meet the requirements is the biggest problem of the existing broiler house.It is also the biggest problem in domestic poultry production and poultry quality.China is a large country and broiler house of different areas in the country in different seasons need different environmental parameters.Establish a database divided by season and region partition which contains construction characteristics,operating conditions and the various environmental parameters under operating conditions is now the work needed to complete.The paper studied the airflow organization form of the inlet and other related devices of the broiler house in north China in winter.The paper firstly tests the environment factor including temperature,humidity,wind speed,harmful gas concentration and dust particle concentration,and finds the actual environment parameter change rule.Then the simulation of the broiler house by Airpak provides the method environment parameter change rule.Finally,the two results within the range of allowable error are effective.Furthermore,the paper discuss the different environment parameters with different direction and length of the inlet and different arrangment of the warm air blowers by simulation.The paper provides a theoretical foundation for the design.building and environment of the standard broiler house in north China.The paper gets following conclution through theoretically changing the simulation of the airflow.(1)Basing on the results of the experiment and the simulation,the simulation is ture and effective.(2)The simulation of the inlets shows:a?The best installation height of the inlet is nearly 1.9m;b?The best leighth of the inlet should be1?1.5 m,not longer than 2 m;c?The best direction of the inlet should be 30°?45°.(3)The simulation of the warm air blowers:a?The best wind volume of the warm air blowers is 3000?4500m3/h;b?Arranging the warm air blowers on both sides is better to control;c?The best gap between two warm air blowers is mearly 10m.