Based on polytrophic process of air compression and isothermal gas combustion inside the turbine, an improved gas turbine with generality Carnot cycle is suggested.
A new concept is proposed,under which by utilizing a proven simple-cycle marine gas turbine a type of intercooling-cycle high-power marine gas turbine has been derived.
To fully utilize the low temperature exergy of liquid hydrogen,installed additionally in a hydrogen energy based gas turbine cycle is an air precooler and hydrogen turbine.
So the world's four main makers of gas turbines-GE of America, Siemens of Germany, Mitsubishi Heavy Industries of Japan and Alstom of France-are looking forward to a surge in new orders.
But that is just America: although historically it has represented 15-50% of world demand for utility-sized gas turbines, the growth of emerging economies means that it is now just 8%, reckons Bernstein.