GE Global Research, a research arm of General Electric, has developed a compact, desktop-sized gas turbine that can power a small city.
Unlike most similar turbines powered by steam, this one runs on carbon dioxide. The gas is stored in a high pressure container at a temperature of 700 ° C. Under these conditions, CO 2 is in an intermediate state between gas and liquid, which ensures ultra-efficient rotation of the turbine, which converts up to 50% of thermal energy into electricity.
One of the main advantages of the turbine is the ability to operate on exhaust gases, the reserves of which are practically unlimited. GE confirms that the power cycle is a zero-waste closed loop within which CO 2 circulates.
In addition, the design of the turbine allows you to turn it on and off as needed, like other renewable energy sources - wind generators and solar panels. At the moment, the turbine's capacity is 10, 000 kilowatts, but its capabilities can be scaled up to 500 megawatts, which is enough to provide power to a small city.
Researchers hope to finalize their product in the near future and begin industrial testing.