Re: low pressure, no electricity hot water

[elnav]

This is an excellent example of the other kind of solar power I mentioned in a thread. Solar thermal is roughly 3X as effective as solar PV in extracting energy from sunlight.

Although we have all heard about it, somehow it’s not near the top of the priority list when it comes to off-grid housing. Concentrated sunlight has many uses. Although a bit more comple, storage of the heat from sunlight is posible. For low pressure water flow, you pretty much need to have a gravity feed.

Concentrated sunlight using lenses or mirrors are being used industrially to heat water into steam which opens up endless possibilities. Steampowwer can drive pumps and generators. Unfortunately most of this kind of development is currently being done in Europe or India.