... for the Evil Genius, Model Rocket Projects for the Evil Genius, and Build Your Own Car PC, all for McGraw-Hill … and if you enjoyed the chapter on fuel cells, his forthcoming book Fuel Cell Projects ... 13 The Solar Resource Figure 2-6 Harnessing renewable energy to meet our energy needs cleanly Figure 2-7 Solar energy being harnessed directly on the roofs of the eco-cabins at the Centre for Alternative ... from the solar cell to the tank This is the simplest type of solar system—it is called a thermosiphon The reason for this name is that the process of circulation from the solar cell to the tank...