F206 STRUCTURE CHARACTERISTICS AND APPLICATION EFFECTIVENESS OF AIR COOLED SUPERCRITICAL AND ULTRA-SUPERCRITICAL STEAM TURBINES(Steam Turbine-2)

Abstract

Problem of lacking water resources that affects the development of the coal-fired power generation units in the rich coal areas of the north of China is analyzed. It is proposed that the air-cooled supercritical and ultra-supercritical steam turbines are the key equipment of water-saving coal-fired generation units with the large capacity and the high efficiency. Technical versions and structure characteristics of the air-cooled supercritical and ultra-supercritical steam turbines are presented. Moreover, the effectiveness in saving coal and water of the air-cooled supercritical and ultra-supercritical coal fired generation units is analyzed. It is showed that the application of the air cooled supercritical and ultra-supercritical steam turbines achieves significant economic benefit and society benefit in China.