Cooling poultry sheds in summer: what actually reduces losses

Cooling by evaporation, not by wetting

High-pressure fogging puts water into the air as 1–15 μm droplets. They evaporate within the air stream, absorbing heat and lowering shed temperature without depositing water on litter, feeders or birds. That droplet size is the whole point: coarse spray cools the floor, raises humidity and creates the wet-litter problem that costs more than the heat did.

Working with ventilation, not against it

Fogging and tunnel ventilation are complementary, but the sequence matters.

• Air movement first: fog introduced into moving air evaporates faster and spreads further.
• Fog into the incoming air path, not over the birds, so droplets evaporate before contact.
• Humidity-linked control: when relative humidity is already high, evaporative cooling loses effectiveness; the controller should throttle back rather than add water.
• Zone by shed: different sheds, ages or stocking densities need different duty.

What to specify

Tell us the shed dimensions, bird type and density, ventilation arrangement and the water and power available. The quotation then states nozzle count, zoning, pump size and the expected consumption (published range 3–8 L/min), with a humidity-linked control package so the system backs off when the air is already saturated.