RENEWABLE ENERGY SOURCES
cooling and cleaning of the gas, and combustion in a gas turbine. Steam is raised using the hot exhaust of the gas turbine to drive a steam turbine that generates additional power and/or delivers lower pressure steam for heating purposes. The cascading of a gas turbin e and a steam turbine in this manner is commonly called a combined cycle.
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Coal: Social, environmental and economic concerns
www.osemosys.orgtraditional steam cycle, where the steam is brought to super-critical conditions. • Integrated Gasification Combined Cycle (IGCC). Here, the coal undergoes a gasification reaction and is turn into a gaseous mixture of H2, CO2 and CO. The gas is then burnt in a Gas Turbine and the exhaust feeds a Heat Recovery Steam Generator (HRSG).