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Type: Posts; User: kahle

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  1. You know Ron, there are just some things you...

    You know Ron, there are just some things you can't unsee.
  2. Ah Longhare. I went with 4 Full River DC224-6...

    Ah Longhare. I went with 4 Full River DC224-6 AGM batteries. These are 6 volt 224 Ahr batteries but they aren't the flooded type. The AGM (Glass Matt) batteries won't freeze on me over the winter....
  3. OK, so now I feel stupid, yeah I remember being...

    OK, so now I feel stupid, yeah I remember being told to make sure I got an MPPT charge controller way back when. So, I'm shopping for one now for this little system and I find that there's a number...
  4. The charge controller I got is...

    The charge controller I got is http://www.theinverterstore.com/30-amp-solar-charge-controller-12-24-volt.html# this one which does not specifically say it is MPPT but from the description, I figured...
  5. I must confess that that standard light switch is...

    I must confess that that standard light switch is the one I use to isolate the PV array from the rest. I figured it wouldn't matter much since it's only a 10 amp load. Did I figure wrong?
  6. Thread: Naysayers

    by kahle
    Replies
    44
    Views
    11,170

    The original question that started this thread...

    The original question that started this thread asked about why the idea that log cabins are cold is so wide spread. I think I have a reasonable answer to that. It all comes down to R-value. The R...
  7. Got my solar power off-grid system up and running (finally)

    25722573

    I've been working on this for a long time and I finally got my solar power system all set up and functioning. I ended up designing it myself mostly because I couldn't find anyone that...
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    10,197

    We installed a small Bosch tankless heater mostly...

    We installed a small Bosch tankless heater mostly because we walk away from the cabin in the winter and let it freeze. It's a lot easier to drain a tankless heater than a tank. This is a propane...
  9. Replies
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    National Solar Tour

    The national solar tour is coming up this Saturday. This is a great place to find ideas about how to build your house to gain passive solar and how to build your roof to maximize other solar...
  10. Thread: Log Size

    by kahle
    Replies
    27
    Views
    4,803

    Log thinkness

    I thought SKip's house was 6000 square feet. Has it grown?

    Wood generally provides a resistance to heat transfer (R value) of about 3 per inch. So a 12 inch log is about R-36 at the thickest...
  11. Solar envelop house in Stanwood

    I worked on a solar envelope house in Standwood, Washington many years ago. It was not done with logs but ordinary framing. They took advantage of having a south facing slope. They buried ground...
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    Breathing vs Drafts

    I have spent many a night in a mortar chinked log home. And, no, mortar chinking does not mean it is drafty.

    Think about it. Are brick houses automatically drafty? There are more mortared seams...
  13. Don't forget heat capacity.

    When you look at the insulating qualities of logs you have to take into account two factors. R-value (The resistance to the movement of heat) and Heat Capacity (sometimes called dyanamic R value or...
  14. Rocky Mountain way the hell p there!

    10,000 is sort of pushing the envelop. You may need to do some blood doping just to live up there.

    There would be many considerations to allow for that type of altitude. You need to oversize...
  15. Thread: Solar Incentives

    by kahle
    Replies
    4
    Views
    1,093

    Solar Incentives

    I don't know if anyone has mentioned this on this board before but there are solar house design classes being offered around Seattle by a fellow named Chris Herman that are interesting to attend. ...
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