Poultry House Control
14
Standard & Precision, Example
Standard and Precision Ventilation Example
Step 1 Current Conditions for Both Standard and Precision:
2 @ 36” Min Vent Fans 60 sec on, 240 off
Target and Set Temperature: 80ºF
Outside Temperature: 60ºF
Inside Temperature: 80.5ºF
Bird Heat is Balancing Outside Temperature
Standard Mode Settings:
Fans On at 82.0ºF, Off at 81.0ºF
Heaters at 77.0ºF
Precision Mode Settings:
Next Level: 75 Sec On, 235 Off
Heaters at 79.0ºF
Step 2 Change in Outside Conditions due to Sun Rising:
Outside Temperature increases 2º to 62ºF
Step 3 Standard Mode:
1. Inside Temp goes to 82.5ºF
2. Fans go to full time
3. Ventilation, CFM goes from
4,000 cfm to 20,000 cfm
4. Inside Temperature drops
towards heater setting
5. Ventilation yo-yos between
20,000 cfm and 4,000 cfm
with temperature oscillation
Step 3 Precision Mode:
1. Inside Temp goes to 81.5ºF
2. Fans go to next level, 75
seconds on, 235 seconds off
3. Ventilation, CFM goes from
4,000 cfm to 5,000 cfm
4. Inside temperature drops back
to 80.5ºF
5. Ventilation stays at 5,000 cfm
with stable temperature
To Next Page
Loading...
