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  • lee78's entry Tiny Underground Solar House is a winner in the Tiny Home Contest contest 9 months ago
  • lee78's entry Tiny Underground Solar House is a finalist in the Tiny Home Contest contest 9 months ago
  • lee78's instructable Tiny Underground Solar House 's weekly stats: 9 months ago
    • Tiny Underground Solar House
      11,941 views
      117 favorites
      23 comments
  • lee78 commented on lee78's instructable Tiny Underground Solar House 9 months ago
    Tiny Underground Solar House

    raccoon on table looking in door didn't see meI wasn't inside when bear cub saw reflection in door (right edge of photo) and ran off

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  • lee78 commented on lee78's instructable Tiny Underground Solar House 9 months ago
    Tiny Underground Solar House

    The house design would need a longer overhang over the south windows or another way to shade them during summer given the lower sun angle in Alaska. Or maybe the floor would absorb more summer heat that you would get back in winter. Here deciduous trees provide summer shade and lose their leaves to allow sunlight to the windows in winter. The lowest outside temp I've seen is 3 F, (inside 44 F.) There may be a week or 10 days when it does not get above freezing outside.Owner-builder smugness compensates for snugness. Also, an air temp of 50 F is much more comfortable in here than in a poorly heated above ground house; I think radiant heat from the thermal mass of earth all around is more important for comfort than air temp.An electric blanket is the only heating equipment I routinely u...

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    The house design would need a longer overhang over the south windows or another way to shade them during summer given the lower sun angle in Alaska. Or maybe the floor would absorb more summer heat that you would get back in winter. Here deciduous trees provide summer shade and lose their leaves to allow sunlight to the windows in winter. The lowest outside temp I've seen is 3 F, (inside 44 F.) There may be a week or 10 days when it does not get above freezing outside.Owner-builder smugness compensates for snugness. Also, an air temp of 50 F is much more comfortable in here than in a poorly heated above ground house; I think radiant heat from the thermal mass of earth all around is more important for comfort than air temp.An electric blanket is the only heating equipment I routinely use, but dehumidifier, water heater, my 1982 refrigerator, a couple of incandescent light bulbs etc contribute their electric load in the form of waste heat. The power has not failed in recent winters, so I could use a portable 1750 watt electric heater, but I don't. I also don't use a portable kerosene heater except to test it. A carbon monoxide detector assures me there are enough leaks in the window walls so ventilation is not a problem. (Who thought to seal the cracks between the planks near the ends?) My sister sent a big BULKY sweater and a thermal blanket she designed and crocheted. The blanket has a section at chest level with an overlapping layer formed into two wide arm holes, so I can stick my hands thru to operate a keyboard without pulling the blanket below my shoulders. A wool ribbon 3 inches wide and 4 feet long is sewed to the top of the blanket at the ribbon's middle. I wrap the two ends of the ribbon around my neck, like a scarf. It keeps the blanket from slipping down when I sit up.

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  • lee78 commented on lee78's instructable Tiny Underground Solar House 9 months ago
    Tiny Underground Solar House

    On a moonless night if I don't leave a light on inside that is a problem even when I know the door is nearby.

    I like!

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  • lee78 entered Tiny Underground Solar House in the Tiny Home Contest contest 10 months ago
  • Measure The Moisture Content Of Your Firewood With A Multimeter

    No, the heat used to vaporize water is wasted if your purpose is to raise the air temperature. While the heat from burning wood is raising the water temperature from room temp to boiling, that heat in the water IS added to the room and not waste BUT when the water reaches boiling temperature it stops rising in temperature. Lots of heat then goes to vaporizing the water at the boiling temperature. So the room gets humid with steam, but the heat used for vaporization would have gone in to heating air to a higher temp if the wood had been drier. Wet wood wastes heat because so much of the heat does not warm air or water, it just converts water to steam at constant temperature.

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  • lee78 commented on anil8tor's instructable Solar Heater for My Shop2 years ago
    Solar Heater for My Shop

    This 12' C-band satellite dish provided domestic hot water in 1983 and collected TV with a cassegrain feed. Sunlight was absorbed at collector, microwaves bounced off to LNB on dish surface.. I wrote the program for the VIC-20 (lower right) that computed the position of the sun every 5 minutes and adusted azimuth and elevation motors.

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