Hive ventilation

[Corey Johnson]

Has anyone tried a vent stack with the cap that spins to help with moisture in the winter . I thought about making a version that would fit a hive and offer a way for the moisture to vent maybe a vent cap would be to much. Perhaps a little chimney like vent. Thoughts?

[Matt H]

Can you expand on this?  Perhaps provide a drawing?  I'm not quite following.

[Paul Zelenski]

A fancy vent at the top might work well. Some people have used different vented covers to good success. One caution, though, is that you do not want to create a chimney effect in the hive where the bees warmth pulls cold air in from the bottom and chills them.

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[marvin]

The analogy I picture are the outhouses with the spinning fans at public parks.  But Paul's comment points to the problem:  What drives the fan is heat, not moisture.  So you lose both heat and moisture, and pull fresh cold air in from the outside.  I would think that a more gradual, passive turnover would be more desirable.  And current passive models of tops and moisture absorption are more than adequate.  You just have to experiment.