Heating will be provided by a Tulikivi
TTU2700 masonry stove. Since code requires the primary heat source to
be automatic, electric coils will be installed inside the stove, tested,
and probably never used again. Due to the high insulation value of a SIP
house, it passes current energy regulations even with electric resistance
heating.
This model is 7,000+ pounds of soapstone, good for about 1,500 ft²
(my house is 1,600 ft²). You build a hot fire, burn it up in
an hour or so, and release a good eight hours worth of heat which is
absorbed by the soapstone then released slowly. The fire burns so hot
and clean that it can be used during typical no-burn conditions; it's
about as clean as a pellet stove. Eventually the heat works its way
from the firebox and core to the shell and starts radiating-- whatever
is in line-of-sight is warmed.
Above the first course, the core and outer shell are independent and not
in contact, avoiding stress problems caused by the rapid expansion of a
hot fire. The outside of the stove never gets very hot, nowhere near the
temperatures of an iron stove. Most of the heating effect is radiation,
with some conduction. Soapstone has about 3 times the heat capacity
per volume as iron!
The stove package just arrived, and has been staged neer the foundation
awaiting the mason. The foundation is a cinder block perimiter on a big
footing, blocks filled with steel and concrete, and the interior filled
solid with 3/4-minus and broken block, dampened and packed in short lifts.
A 4" concrete slab forms the top surface.
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Staging Soapstone |
Another View |
The Foundation |
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1st Course Laid Out |
Bedding Cement Board |
Cement Board Base |
Building 1st Course |
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Bedding 1st Course |
Squaring 1st Course |
Starting 2nd Course |
Starting Core |
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Starting 3rd Course |
Finished 4th Course |
Core Is Independent |
Need More Guys! |
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Closing In Core |
Laying Out Bypass |
Buttering Bricks |
Looking Down Chamber |
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Finishing 5th Course |
Starting 6th Course |
Finishing 6th Course |
Need Scaffolding Now |
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Building Up Core |
Core Almost Capped |
Bypass Damper |
Backup Coil Wiring |
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Core Almost Done |
End of 1st Day |
Connector Clips |
Clip Fully Seated |
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Starting Top Course |
Fitting Last Coils |
Topping Core |
Top Course Done |
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Angle-Iron Supports |
Damper in Place |
Closing In |
Setting Chimney |
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Final Grouting |
The Crew! |
OK, Break It Up |
Tulikivi TTU2700 |
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