Why check the airtightness of the chicken house?

The negative pressure in the chicken house can be used as an indicator of the airtight performance of the house. In order for the house to achieve ideal ventilation and to control the air entering the house to the desired location, the air must enter the house at the correct speed, so that the house can be A certain negative pressure must be reached.

 Rational ventilation can only be achieved if the house is properly sealed/closed and free of air leakage.

 In order to ensure the correct negative pressure is maintained and to determine whether the house has air leakage that may affect the ventilation effect, the negative pressure of the house should be checked daily or periodically over time.

 Use house pressure gauges to check house tightness

 1.Equipment

  A pressure gauge or hand-held pressure gauge installed in the chicken house operating room.

 2.Operating procedures:

The airtightness of the house can be checked by recording the negative pressure in the house. With minimal ventilation, negative pressure can be checked anywhere in the house and should be consistent throughout the house. Negative pressure in the house should be checked before flocks are housed or when ventilation problems are suspected (eg: seeing condensation, poor litter quality, or flocks not behaving as expected, etc.).

 Step 1. Close all doors and windows and all air inlets and turn off the machine.

 Step 2. If using a hand-held pressure gauge, place the high-pressure plastic pipe (positive pressure) outside the house through an air inlet (be careful not to open the air inlet door too much or flatten the plastic pipe), and put the low pressure (Negative pressure) plastic tubes are placed inside the house.

 Note: If using a pressure gauge mounted on the chicken house wall, it should be calibrated when the flock is housed (see Instructions: How to Calibrate a House Fluid Pressure Gauge).

 Step 3. Make sure the pressure gauge body is in the zero position.

 Step 4. Turn off the winch motor of the air inlet on the side wall, so that the air inlet cannot be opened automatically.

 Step 5. Turn on two minimum ventilation fans (91 cm/36 inches) or one tunnel ventilation fan (122 cm/48 inches).

 Step 6. Record the negative pressure reading when the pressure gauge reading is stable.

 3.Result analysis:

The ideal negative pressure in the chicken house should be greater than 37.5 Pa (0.15 inches of water). The negative pressure given below is not a working negative pressure. They just determine whether the coop is effectively closed. At minimum ventilation, higher working negative pressures may be required.