So it's a simple cycle where the gas from, and this is helium gas now, is circulated through the reactor and goes right to the gas turbines, and it's a gas turbine not a steam turbine.

Then we'll discuss specifically two types of power conversion systems. One is the steam cycle which we call Rankine and the other is the Brayton cycle which is the gas cycle.

Efficiency analysis and calculations for gas steam combined cycle power plant are described.