Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
3. Brooding<br />
3.1. Ventilation<br />
●<br />
●<br />
●<br />
Minimum ventilation controls air quality via fans which<br />
must work on a timer and inlets controlled by pressure and<br />
both independent of temperature control. The minimum<br />
ventilation system operates any time the house temperature<br />
is at or below the house set point temperature.<br />
The timer should provide a minimum air exchange value of<br />
12.5% (1/8) of house volume. The minimum run time needs<br />
to be at least 60 seconds to ensure that the incoming cold,<br />
outside air has properly mixed and heated with the internal<br />
air before reaching chick level.<br />
Inlets are vital in achieving good air volume and uniform air<br />
distribution.<br />
●<br />
The inlets should completely seal when closed.<br />
●<br />
●<br />
●<br />
The inlets should react to the fans and work on pressure,<br />
NOT on percentage of opening or temperature.<br />
The inlet capacity should match the fan capacity at the<br />
fans working pressure based on the width of the house.<br />
Automatic calculation of minimum ventilation requirements for your house can be made on our website<br />
www.cobb-vantress.com
Change language