Problem – Water – Water is contaminated / no fresh water.
Solution – Solar Water Distillation
Discussion – Materials needed to build a solar still? How to teach people to build them? Can they make enough water for everyone? Where are they needed most?
There are many ways to make a solar still. Some are fancy and many are very simple.
1. Two plastic bottles attached together in the openings. Put water in one then set in the sun on an incline with water in lower bottle. The sun will evaporate the water and condense in the upper one where you will have it drain out into another container.
2. A small jar inside a larger container. The smaller jar contains the water and is set in the middle of the larger container which is sealed. Set this in the sun and the water from the smaller jar will evaporate and condense into the larger container.
3. Dig a hole in the ground. Pour contaminated water into the hole and let it soak in. Place a container in the center of the hole. Cover the hole with a plastic material like a from a trash bag. Place a rock over the location of the container below. Water will condense on the plastic and drip into the container.
*There are many more easy ones like those.*
Larger ones can be built but require more material.
Pyramid Example- This one can be improved with focused solar from mirrors or lenses and can even make electricity if modified.
Pyramid Shaped Solar Distillation Device
By adding the lenses creation technique from the video below you can hasten the distillation process and create electricity by using the steam and heat to move a motor to create electricity.
Create a large lens cheaply.