| At present, the rounded system of the extra supercritical (ESC) unit in design, construction and operation was formed, and the technology of electric power generation was mastered through introducing and absorbing the foreign advanced technology, which achieved international advanced level.Based on the situation of type selection about feed pump used for 1000 MW extra supercritical (ESC) units in operation in oversea and under construction in China, considering that 1000 MW ESC units will share the basic load in the system primarily, the operation version of main feed pump used for 1000 MW extra supercritical (ESC) units under construction was determined, and the suitable deaerator and high-pressure heater were selected in the prerequisite of assuring the safe and reliable operation of the units, which increased thermal economical efficiency and reliability in operation, and reduced project investment.
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