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10' Satellite Dish as Solar Concentrator

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Posted by mt on January 3, 2004, 11:25 pm
 
I was searching craigslist.org today for a satellite dish that I could
convert into a solar concentrator for water heating.  Lo and behold
there's one for sale for $0 about 70 miles from me in the SF Bay
Area.  The price is right, but hefting a few hundred pounds of steel
onto the roof of my little Golf gave me pause for thought.  What are
peoples experiences in converting satellite dishes into solar
collectors?

tia,

-mt

Posted by user on January 4, 2004, 3:14 am
 
Interesting idea.
I would be interested to know, what temperature you can get at the focal
point of the satellite dish.

mt wrote:


Posted by Glenn on January 4, 2004, 4:42 am
 I am slowly grinding my way this end.  You will need to consider the
effects of a failure of the tracking system (potential
overheat/boil/explode).  You will also need to consider upping the
tracking to "dual axis" capability as the dish will only be perfect for
a few days per year, presuming it is a typical polar axis tracking unit.
  I am using a second (salvaged) actuator to adjust the elevation on my
system.

Being a computer geek I am going to use a (linux) PC to manage the
tracking but there are many options for this.

Checkout my undermaintained website if you like ...
http://www.pluggedin.ca/heater.html

Google search for solar sunflower for some hard-core concentrator dish
systems.

Glenn


mt wrote:


Posted by mt on January 5, 2004, 12:39 am
 Glenn -

Great website!  I look forward to seeing realtime data streaming in
from your dish to your website.

-mt




Posted by Glenn on January 12, 2004, 4:04 am
 Another update posted :-)  slowly but surely ;-)

Glenn

mt wrote:


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