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How To Build A Passive Solar Heater
A passive solar heater is a simple thing you can make to help heat your home. It obviously will not work at night, but it can reduce heating costs during the day. This solar heater is very simple and can be made with items already in your house. This heater works in a similar way to a solar oven, but is simpler and doesn’t get as hot. All you have to do is place the heater in a window that gets sunlight. The black paint warms the trapped air in the bin till it leaves through the top hole, drawing in colder air through the bottom holes in a chimney effect. This type of heater is perfect for a greenhouse or to supplement heat in a colder room in your house. They can add a significant amount of heat if you use multiple heaters.
You will need:
1. Clear rubbermaid bin (Different sizes will produce different amounts of heat).
2. Black paint (flat finish).
3. Paint brush (or spray paint in item 2).
4. Clear plastic wrap (clearer the better and thicker is better too). 5. Cutting tool for plastic (doorknob drill bit 2″ in diameter works best). The basic construction is this: Read more of this post here
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