【摘要】 根据某1 000 MW级超超临界燃煤机组的热平衡图,通过计算分析高压加热器过热蒸汽冷却段出口设计温度对高压加热器面积及上端差值,高压加热器上下端差值对面积、机组热耗值的影响,提出机组高压加热器上端差不应统一按规范最小值-2℃设定,而应根据工程具体条件由相应厂商计算确定,为机组节能降耗设计提供参考意见。更多还原

【Abstract】 In this article,based on the heat balance diagram of 1 000 M W ultra- supercritical coal- fired unit,through calculating&analyzing the influence of HP heater superheated steam cooling section outlet design temperature on HP heater heat transfer area and HP heater upper terminal difference; and influence of HP heater terminal difference( upper / low er) on heat transfer area,unit heat consumption value,has presented the HP heater upper terminal difference should not be set to- 2° C according to the specification,but determined by calculation on specific project conditions,and has provided reference for energy conservation of pow er units.更多还原