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First, ensure that the ventilation equipment is working properly. If there is too much dust on the fan blades and shutters, the amount of ventilation will be greatly reduced; if the fan belt is loose, it will cause the speed of the blades to slow down and the belts will wear prematurely. Therefore, the dust on the fans' blades and shutters should be removed frequently, and the belts and the worn pulleys should be replaced in time to ensure that the belts are in a tight state and the fans are in the best working condition, which greatly improves the ventilation and ventilation of the fans and the heat removal. ability.
Second, determine the number of open fans based on the specific performance of the flock. The temperature felt by the flock is different from the temperature measured by the thermometer. Therefore, the appropriate amount of ventilation should be determined based on the specific performance of the flock. When the flock ceased to move, almost all lying on the floor but not breathing, indicating that the air in the house was too large, several fans should be turned on to increase the amount of ventilation and remove excess heat in the house in time to make the flock feel Comfortable.
When airflow is generated through vertical ventilation, the lower the air temperature or the smaller the age of the flock, the better the air cooling effect. On the contrary, the higher the air temperature or the older the chicken age, the worse the air cooling effect. Therefore, in the production practice, it should be determined according to the specific circumstances whether to open the fan. It should be noted that when the temperature is not high or the flock age is too small, the use of vertical ventilation will cool the flock and affect its growth.
Third, ensure that the house is well closed. Keeping the house closed in the summer is as important as in winter, especially when using longitudinal ventilation to speed up the heat dissipation of the flock, as this can prevent hot air from entering anywhere and reduce the flow rate of the air in the house, which in turn affects the cooling effect.
Fourth, to keep the fence. There is a certain temperature difference between the air inlet and the air outlet of the vertical ventilation house. During the hot season, the flock of chickens prefers to pile at the lower temperature air inlet. This greatly affects the vertical ventilation effect and the production performance of the flock. Therefore, it is advisable to rearrange the flocks before the 21st day of the flock, and at the same time pay attention to the use of good air permeability to ensure the normal flow of air.
Fifth, the joint use of wet bar device. It is necessary to use the wet bar device when the weather is hot, there is a large temperature difference between the inside and outside, and the vertical ventilation system is operating normally, and there should not be other air inlets outside the inlet of the wet curtain. Check for the existence of dry parts at the joints of doors, vents, wet curtains, and walls, because the hot air entering the house from these places will affect the cooling effect.
Sixth, fully implement emergency measures. Once the fan stops rotating during the hot season, the temperature and humidity inside the house will increase rapidly. According to the age of the flock, it is generally 10 to 20 minutes to reach a fatal level. Therefore, always check and maintain the backup generator, and for some vulnerable parts such as fuses, belts, etc. should be prepared enough to ensure that the ventilation equipment can operate normally under any circumstances. (Sun Chengwei)
Longitudinal ventilation and heat dissipation effect
Longitudinal ventilation in the high-temperature and high-humidity summer is the best way to increase the air velocity in the house and accelerate the heat dissipation of the flock. Although vertical ventilation simply increases the rate at which heat is dissipated, the temperature in the room is still higher than the ideal temperature, but it can make the flock feel comfortable. This article lists some key points for the breeder's reference in order to better improve the summer management work.