Misters (pressurized)

Carousel of Misting Images

Booster Pump

A booster pump is needed to raise pressure in misting lines.

Booster Pump with Filters

Water must be filtered to removed particles that may plug nozzles.

Medium

High grade PVC is needed at 250 p.s.i..

Nozzle attached to medium pressure misting line.

Using an inverted elbow to attach the nozzle limits draining of the misting line onto the floor when the misters cycle off.

High pressure nozzle and line.

Metal piping is needed for high pressure misting line.

Misters running in barn set up to receive young birds.

Source: Way2Go Tech LLS

Close up of misters spraying a fine mist.

Source: Way2Go Tech LLS

Video of High Pressure Mister

Video of multiple mister lines starting to operate as fans begin to turn at maximum airflow (tunnel mode)It is a SKOV video hosted by VETOVO ELEVAGE.

Sizing of Misting Systems

You need to have a sufficient number of nozzle and misting lines to keep up with the air flow. A barn with an air exchange every minute will need twice as much mister capacity as a barn with an air exchange every two minutes. If it does not, the temperature drop will be less than expected.

Barn cooling based on airflow and misting capacity

Summer Airflow (cfm/sq. foot)	Temperature Drop* with 1 Misting Line	Temperature Drop* with 3 Misting Lines
Low (6 cfm/sq. ft.)	3 C	9 C
Medium (10 cfm/sq. ft.)	2 C	6 C
High (15 cfm/sq.ft.)	1 C	4 C
*Temperature dropped is based on a high pressure misting system and typical temperature and humidity on a hot afternoon on the prairies.

Pros and Cons

Benefits of Misting

Significantly drops air temperature. Can be cooler inside barn than outside.
Allows airspeed in barn to create wind chills. Makes your fan capacity more effective at cooling the birds on hot days.
Increases bird activity.
Reduces dusts in the air.

Issues with Misting

Drop in temperature is partially offset by increased humidity in barn. Internal evaporative cooling by birds is reduced.
Nozzles are more likely to plug due to small nozzle opening that creates fine spray.
Wets litter if run too frequently, especially if low or medium pressure.

Low, Medium and High Pressure Misting Systems