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Subject:
From:
Wayne Pitts <[log in to unmask]>
Reply To:
Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:
Tue, 28 Oct 2014 20:14:59 -0700
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Juanse asked: "Anyone that have a honey house with floor heating can share
its design/specs?"

Not sure if this will help you, hope so.
I don't have a heated floor honey house, but my 2500 sq ft house is heated
with warm water flowing through PEX piping spaced 6 inches apart under
hardwood floors.  First heating for humans.  There is a considerable time
lag between the request for heat and the feeling of warmth.  At least an
hour or more.  The temperature of the water flowing beneath the floor is at
90 degrees F, and theoretically the water will flow and heat the room to
that temperature given that the room has well insulated walls, floor, and
ceiling.  For people, 64-68 degree air temperature 60 inches above the floor
is very comfortable, because the floor is at about 75, warm feet fool the
head into thinking the rest of you is warm.   I use solar water heating with
a propane 96% efficient 90,000 BTU boiler, feeding  a 200 gallon storage
tank for domestic hot water and heat.  
Second heating a honey house.  Honey is a thermal sink, it takes a lot of
BTUs. I f I were designing a heated honey house, all six of the interior
sides would have PEX piping for heat transfer.  Minimum of 4 inches of solid
foam insulation per side.  The PEX can have concrete poured over it for the
floor.  Please note, other methods of heating are far cheaper on the
installation side, but radiant water heat wins hand down for efficiency.
Especially if you can use solar heaters to heat the water.  On an annual
basis I use about 1 gallon of propane per day. The number of BTUs required
to heat the facility and contents should be equal for all types of heating.
The rate of temperature rise will be different.  I would ask the local
heating specialist to calculate the number of BTUs needed and then pick the
heating system that provides that amount of BTUs and fits your budget.  

Good Luck
Wayne

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