Method and structure used for improving efficiency of turbo generator unit using solar energy optothermal/industrial waste heat for generating electricity

• Main Authors: HONG ANYAO, WANG YIFEI, ZHANG LUXIN, LIU JIANAN, YIN HUAJIE, ZHANG JIAN, XIAO XIANGHAO, ZHANG YONG, LI BOWU, YIN GANG, MA SHAOLIN, FAN XIAOPING, ZHANG YUANLIN, ZHANG LIZHI, LIAO SHANGBIN, WU FANGSONG, WANG XINGZHAO
• Format: Patent
• Language: English
• Published: 03.06.2015
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; WEAPONS

The invention discloses a method and a structure used for improving the efficiency of a turbo generator unit using solar energy optothermal/industrial waste heat for generating electricity. According to the method, the traditional single-cylinder and single-shaft unit is changed into a double-cylinder, double-shaft and double-rotating speed unit, the rotating speed of a high-pressure cylinder is 4000rpm-7200rpm, and the rotating speed of a low-pressure cylinder is 3000rpm or 3600rpm; an intermediate reheat cycle is adopted, a reheat pressure is selected to be 13%-30% that of an initial pressure, the root diameter of blades of the high-pressure cylinder is reduced for 15%-55%, the effective height of the blades is increased for 50%-140%, the backheating levels are 3-10 levels, and the unit efficiency is greatly improved.