Cheap Solar Heater
Intro: Cheap Solar Heater
A video can be seen at:
http://www.youtube.com/watch?v=b-9wcDqM8qs
Here is what you'll need:
-Plywood and some assorted pices of wood
-Copper tubes, elbows, couplings, connections, etc.
-copper or brass sheets
-Plumbers solder and paste
-A plumbers torch
-sand paper
-Used engine oil (just a little to coat the wood)
-Black paint
-Acrylic or polycarbonate transparent sheet
-plastic hoses
-plastic container
-connections
-polyesthiren
-silicon glue
Sizes depend on what you have at hand. The longer the pipes run, the more energy they will absorb. The wider the pipe, the less pressure losses. JUst consider it, because copper is the most expensive item on the list.
STEP 1: Solder the Pipes and Sheets
You can lay out your exchnager in a series or parallel design. For me, I chossed the series one. So I used 1 meter long sections of 1/2" pipes (8 pcs). plus the smaller ones, which gives a total of 9 meters of pipe. Then I welded the copper sheets to increase absortion area.
Then run water thrugh it and test for leaks. Rework if needed.
After the leak test, clean it with paint thinner. And coat it with black mate paint.
STEP 2: Assemble Your Box
STEP 3: Cover It
Chose a nice spot (your roof) and orient it to the sun's line. (Southwards for us living in the north emisphere) I used a simple leg support for a 30 degree angle (it is what I measured in the commercial models).
9 Comments
padbravo 10 years ago
What did you use for that tank?
unknownpocketnerd 10 years ago
DamianKillcannon 12 years ago
unknownpocketnerd 12 years ago
I've been asked to built more to my buddies, but I tell them they can built them themselves and they can try different dimensions. But it is a trend and everybody is getting the need to switch to solar heating.
Dienekes 12 years ago
unknownpocketnerd 12 years ago
alancasey 13 years ago
What are you using it for.
naveen_tharasi 13 years ago
but how can give connections to any motor or other for working
unknownpocketnerd 13 years ago
Sorry, but I don't understand your question. Please rephrase it.