Frank Shuman’s Solar Arabian Dream

Commercial-scale concentrated solar power was proven effective as early as 1913.
Commercial-scale concentrated solar power was proven effective as early as 1913.

“On a clear, blazing hot day in June of 1913, the cream of British colonial society in Egypt—including journalists, ranking civil servants, and diplomats—gathered in Maadi, a small farming village on the banks of the Nile several miles south of Cairo, for the grand opening of a most unusual irrigation plant.

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Rocket Mass Heater Failure

The folks at Mud Dome blog couldn't get their rocket mass heater to work in Canada.
The folks at Mud Dome blog couldn’t get their rocket mass heater to work in Canada.

I love rocket stoves and mass heaters and have been recommending them for years. However, there are limitations to everything. Here’s a report from frigid Canada where a rocket mass heater wouldn’t work.

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MittiCool Clay Refrig (Non-electric)

MittiCool clay refrigerator keeps food cool with evaporation
MittiCool clay refrigerator keeps food cool with evaporation

“A fridge for the common man that does not require electricity and keeps food fresh too. With this basic parameter in mind Mansukhbhai came up with Mitticool, a fridge made of clay. It works on the principle of evaporation.

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Biotech India Biogas Plants

Turn household wastes (human wastes and food scraps) into clean burning biogas with $300-$400? (waiting for current price list) Biotech biogas plants, or make one yourself. Biotech also sells waste to electricity plants. Payback period is only 2-3 years. They now mass produce their biogas plants out of PVC and aim to sell one to every household in India as a standard commodity.

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