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Posted by Morris Dovey on April 7, 2007, 12:11 am
 
no spam wrote:

| Very simple questions.  Where can I find plans for things that a
| diy'er can make.  Simple things like batch water heaters and
| complex things such as solar heat engines.

STF^h^h^hDAGS

Searched on 'solar heat engine plan':        1,170,000 hits.
            'solar batch water heater plan':   297,000 hits.

If even only one out of every thousand is useful, you should have at
least a starting point. :-)

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/solar.html



Posted by no spam on April 9, 2007, 6:56 pm
 


Been there, done that.  How many of those did you go to?  How many the
visited ones did you find any good info on how to build?



Posted by Morris Dovey on April 9, 2007, 10:23 pm
 no spam wrote:
||| Very simple questions.  Where can I find plans for things that a
||| diy'er can make.  Simple things like batch water heaters and
||| complex things such as solar heat engines.
||
|| STF^h^h^hDAGS
||
|| Searched on 'solar heat engine plan':        1,170,000 hits.
||            'solar batch water heater plan':   297,000 hits.
||
|| If even only one out of every thousand is useful, you should have
|| at least a starting point. :-)
|
| Been there, done that.  How many of those did you go to?  How many
| the visited ones did you find any good info on how to build?

Not sure how many of those - but I've visited more web sites than
you'd probably care to believe looking at passive solar hot air
heaters. I've looked at a lot of "solar heat engine" web pages - as
you might guess from my (charitable) manure to gold ratio.

In the end, I decided that it was worth while to do a little (well,
actually, a lot) of practical experimentation - which offers the
benefit of developing some "gut feel" for the problems and solutions.

When you asked your "very simple questions" were you hoping for people
to read your mind and present only the web sites addressing very
specific interests?

"Things that a diy'er can make" covers an awful lot of ground.

Now I suppose you only want /free/ plans...

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/solar.html



Posted by no spam on April 10, 2007, 12:30 pm
 

Been there.  But I have found a few sites with plans for passive solar air
heaters.  Every thing from 'solar walls' to 'window units'.  I have yet to
find a site with plans for a solar heat engine.  Granted it is a lot easier
to build a passive air heater than a solar engine but still you'd think
someone out there should have something.



I was thinking that maybe someone would have some sites with good general
info.  If I was interested in finding some websites about gardening would
you need to know if I was looking to grow tomatoes or roses?  Or would you
just point me to a few sites on gardening and let me find the info I needed?



True but I would think most people would have an idea of what a DIY'er could
do.  If someone asked me I would say it would be things that require only
basic carpentry and plumbing.  Of course I do have a bit more skills but I
still can't build a solar PV cell at home.



As of now I'm looking for almost any info.



Posted by Jeff on April 10, 2007, 4:45 pm
 no spam wrote:

   Some of the Sterling engines work on solar temperature levels. But
you have to realize that the efficiency of these devices is carnot
limited. Then you add in that you may get only half that efficiency at
best and you can see why there is limited interest. Having a hundred
square feet of flat plate collectors that generates 5 cents worth of
power a day is not practical.

   Of course if you just want a demonstration solar engine, you can't go
simpler than a Crookes radiometer. Otherwise build a sterling, there are
no shortages of plans. Or come up with your own idea.

   As far as the solar air heaters, the links already provided have
guidelines and examples. Most people adapt them to their circumstances.

   I would do a little work and then post something. Members usually
appreciate it when the op has put in some effort, rather than just
complaining. I've gotten tons of help here with both my active air
collector and active water heater.

   Jeff


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