Gas turbine combined cycle power generation system topped by closed cycle MHD.

Abstract

A new triple combined cycle which is topped by closed cycle MHD and bottomed by gas and steam turbines is proposed for natural gas and gasified coal-fired plants. This triple combined cycle shows a potential for higher plant efficiency and lower NOx emission level than a conventional gas turbine combined cycle. The optimum weight ratios of air to coal and stem to coal supplied to a gasifier are investigated for maximizing the plant efficiency and minimizing NOx emission level in the gasified coal-fired triple combined cycle.