« Last post by iddee on Today at 10:59:15 AM »
Although the above scenarios are interesting, I think the number one ingredient has been left out. That being, 20 to 30 thousand quads of little wings working as fans to direct the flow of air up one side and down the other. The temp and humidity don't come into play at all when the flow is controlled by force. Therefore, in my opinion, the natural flow of the heat created by the bees would be upward, top entrances would prevent the proper control when the fans "wings" slowed. I believe the bees have an easier job controlling the flow of air with lower entrances, and the bees natural selection on wild hives seem to support that. Having said that, I also believe smaller lower entrances, rather than SBBs, make it easier to control.