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Subject:
Re: Upper Ventilation in Winter: Moisture exchange and heat loss
From:
Alex Jackson <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Thu, 17 Dec 2020 11:41:07 -0500
Content-Type:
text/plain
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The northeastern portion of the US just got a blizzard.

Colonies with an upper vent still have 2 inches of snow covering the bottom
entrance.  Colonies *without *an upper vent have melted the snow that had
covered the front entrance.

There's clearly still heat escaping the bottom entrance from colonies
without an upper vent.

I wonder how the magnitude of heat loss through the bottom entrance
compares with that of a *modestly *sized upper vent.

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