Economic Analysis on  Source Steam Switching of Steam-Driving Induced Draft Fan for 600-MW Indirect Air-Cooling Units

doi:10.11930/j.issn.10.11930.2015.10.12

Abstract

Abstract: Taking the steam-driving induced draft fan system of a 600-MW air-cooling unit as an example, the models for small turbine condenser thermal calculation and source steam economic calculation are established respectively. Through the calculation of the economic differences of the steam-driving induced draft fan system using different source steam in different seasons, an optimization method is put forward that the source steam of the small turbine should be changed with the change of the seasons. The calculation results show that the steam-driving induced draft fan system using different source steam has obvious influence on the unit economy, and compared with the fourth stage extraction steam, the net coal consumption rate can be lowered by 0.9 g/(kW·h) when the small turbine is driven by the fifth stage extraction steam in winter and autumn.

Key words: air-cooling unit, steam-driving induced draft fan, source steam, the fifth stage extraction steam

CLC Number:

GUO Junshan, SI Fenqi, SHAO Zhuang, ZHU Kangping. Economic Analysis on Source Steam Switching of Steam-Driving Induced Draft Fan for 600-MW Indirect Air-Cooling Units[J]. journal1, 2015, 48(10): 12-17.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.10.12

https://www.electricpower.com.cn/EN/Y2015/V48/I10/12

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Economic Analysis on Source Steam Switching of Steam-Driving Induced Draft Fan for 600-MW Indirect Air-Cooling Units

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