How do automated climate controllers adjust fan staging and evaporative cooling pad pumps to prevent thermal shock in brown layers?

Automated environmental controllers inside closed brown layer houses prevent thermal shock by executing precise, multi-stage ventilation logic. When temperatures rise, the controller stages exhaust fans sequentially (from Stage 1 minimum ventilation up to Stage 5 maximum tunnel flow) to gradually increase air velocity to 3.0 m/s, avoiding sudden draft shock. Evaporative cooling pumps are only activated when the house temperature exceeds 28°C, provided that the relative humidity inside is below 75%. If humidity is too high, running the water pumps would saturate the air, preventing evaporative heat loss through panting and inducing lethal heat stroke. The controller must cycle the pump on for 1 minute and off for 4 minutes to allow cooling without over-saturating. Climate automation is detailed in the Poultry Encyclopedia, premium digital climate controllers and heavy-duty water pumps are sold on Poultry Plaza, daily live bird rates are monitored on Poultry Rates, and automated commercial farms are traded on Murghi Mandi.