JanAire curtains on the side walls and an insulated roof line will keep this area workable all winter long.
This holding area has JanAire PolyVent curtains on the sides and a JanAire RidgeVent in the peak.
Notice the JanAire RidgeVent down the center of the this holding area roof.
The bladders shown in this JanAire RidgeVent are deflated, or in the open, position.
JanAire RidgeVent inflation/deflation fans are mounted at eye level on the outside walls of the holding area. The air is plumbed to the RidgeVent on the roof with 2″ sch. 40 PVC pipe.
Here’s how JanAire works in a Holding Area
When the holding area is empty, the ridge and side wall curtains are closed. The thermostats that control them are toward the front of the holding area on either side, suspended above the crowd gate fence. As the cows start to fill the area and generate some excess heat, a thermostat will tell the RidgeVent to open. If more air is called for, the thermostats will tell the appropriate JanAire curtains to open. As the area begins to empty out, the temperature begins to drop and the JanAire curtains start to close. If there is a strong cold wind from one side on the area, the thermostats on that side will tell the curtain to adjust.
So … what is the advantage?
Often, with manually operated curtains, the workers in the pit get blasted by cold air between groups of cows, or when there are only a few cows left to be milked.
So, the workers don’t open the curtains enough for good ventilation because of the cold drafts they get when the area is empty.
With sufficient insulation in the ceiling or roof, and JanAire curtains on the side walls, you won’t need to add heat to the floor, which has been done in the past on some dairies in the colder parts of the country.