This would make sense, although I seem to remember being told that hosing can be used to pump warm air from the top of the warehouse down. So cheap , environmentally friendly heating.
If OP knows weather it sucks or blows, we might have this one solved!
This would make sense, although I seem to remember being told that hosing can be used to pump warm air from the top of the warehouse down. So cheap , environmentally friendly heating.
If OP knows weather it sucks or blows, we might have this one solved!
You can see that the hose enters the center of a centrifugal blower, which is the inlet, so the hoses are sucking.