Solar Hot Water Kettle From Plastic Bottles (and Glass)

Step 4 Add insulation

Slide the 20-oz cut bottle over the 16-oz inner bottle; this is the secondary insulation. You may need to make a cut lengthwise on the 20-oz so it fits better. * Next carefully force the 2-liter bottom back onto the bottle.

*Add about 2 tablespoons of dry rice inside as a the 2-liter before assembling. This will increase efficiency of the kettle by absorbing the reflective condensation that can form on the walls of the bottle.

Comments

[scubagal]

What an ingenious thought to add the rice, and in a pinch a bit of dinner as well!