The Solar Dog House

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byQ

Minister of Fire
May 12, 2013
529
Idaho
I've been thinking about this. This would be a great learning project/experiment, especially for nerdy children. It would be a passive system. That is, once completed it would heat by itself by converting solar energy to hot/warm water which would heat the floor/walls of the doghouse.

Goal: to have the solar heated water settle into a tank where the dog lays. Because hot water rises naturally it would be best to have the tank the highest place in the solar water system because it would be the warmest spot in the system. The tank would be covered with something like concrete (you could put a blanket or pad on this).

materials: chicken wire, pex tubing, fiberous cement like vermiculite cement or papercrete (mixture of concrete and paper), a flat rectangular metal tank, a small homemade water solar panel (like 4' x 2'). (You could make the doghouse out of wood, too).

Instead of putting the solar panel on the roof of the doghouse or the side wall I would put it below the doghouse so the hot water would rise to the tank/dog bed. So the dog house would need to be on a deck or hill. I guess you could make the tank the low point in the solar water system, too. This would be more convenient by having the solar water panel the south side of the doghouse's roof.

I would prefer the papercrete instead of wood because it is better insulating and can be poured into forms (it is like oatmeal). The chicken wire would be used like rebar around the walls, floor and roof. Pex tubing would be placed before pouring the papercrete (or vermiculite concrete).

What do you think?
 
Rube Goldberg. To many assumptions, to many possible failure points, to complex. If your going for useful keep it simple and reliable. Without maintenance, antifreeze or daily chores. Maybe a greenhouse doghouse with a thermomass floor :rolleyes:
 
It is simple with nothing new. Everything is a proven technology. It would just need to be assembled. Certainly there are things I don't know, how big a water solar collector? will I be making the doghouse too hot? does it really matter if the collector is the low point or the high point?

During the day the collector would be heating up the water/antifreeze to a certain point (than shut off valve) so doggie could use the warmth at night. It would be a self perpetuating system once completed.
 
Don't get me wrong, your scheme is somewhat valid. That's how my water heater works (see icon). It was a lot of work.
 
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