Brumm Speaks Out: Extreme cold complicates facility heating

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Yesterday I was at a new nursery site that went into use last summer. With the extreme cold weather, the owner was having difficulty keeping temperatures stable in the pig zone.

When I arrived at the site there were 1400 pigs/room that had been weaned 3 weeks. Outside temperatures were below 0F and the wind was blowing. In the pig rooms, temperature swings of 6-8F several times an hour were occurring and the owner was very frustrated in his attempt to maintain pig comfort.

At this site, there were 3 – 225,000 btu/hr variable output furnaces. The stage 1 variable speed circuit in the controller had 2 – 24” pit fans operating at 50% minimum speed and the inlet velocity was low from the actuated inlets, resulting in cold air dumping into the pig space.

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