A Proposal to Harness the Earth's Heat
What is renewable & geothermal energy?
How can it be used?
Dry steam plants pipe steam directly from underground wells into the plant and to a turbine.
Flash steam plants use reservoirs of water with temperatures greater than 182°C, where the hot water rises because of its own pressure. As it flows upward, the pressure decreases, and the water boils into steam as a result. The steam is directed to a turbine, while any leftover water is directed back into the reservoir, making it sustainable.
Binary cycle uses hot water to boil a working fluid, often an organic compound with a low boiling point, and then vaporize it in a heat exchanger, then finally turn a turbine.