This page documents the build and development of a prototype parabolic solar hot water heater with evacuated collector, solar tracking, and safety shielding. It is hoped that the heater will eventually have a payback period of less than two years. Replacing electric hot water heating by solar would save over 100 billion kWh/year, worth 11.5 billion dollars annually for 41 million American homes.
Monday, September 26, 2011
Bubble Pumps
This beauty is a 1984 patent by a really clever inventor named Sorensen from Canada. The pump uses a hand pump to evacuate the chamber 1 to a really low pressure so the water boils at a very low temp. When it boils, it transports the fluid to upper chamber 1 and now since it is at a higher level, water flows down pipe 12. This pushes hot fluid into the reservoir and displaces cold water back down into the collector. Really brilliant. No moving parts.
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