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Research on the Operation Optimization of the Fans of 600MW Direct Air-cooled Units

Author: QiaoZuo
Tutor: ZhouLanXin
School: North China Electric Power University
Course: Thermal Power Engineering
Keywords: Air Cooled Condenser Variable Conditions Fan group Optimal operation
CLC: TM621
Type: Master's thesis
Year: 2011
Downloads: 69
Quote: 0
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Abstract


600MW Direct Air Cooling Units established a mathematical model of the variable conditions of the unit cold - end system , Exhaust heat load , condenser inlet air temperature , face velocity and tube inside and outside fouling resistance condenser pressure the impact of the law , and to draw the characteristic curve of the variable conditions of the air cooled condenser . According Condenser VARIABLE CONDITIONS reveal horizontal wind speed condenser pressure ; Cooling Island 3D physical model , dominant wind direction over the cold platform temperature distribution and the distribution of the flow field . Found in different parts of the air-cooled island fans to contribute to regional differences : in the first row and the first column of the windward side of the lower fans to contribute . For the region 's poor air-cooled unit heat exchanger , the fan group run three regional step-by-step , looking districts optimal running speed , to find the best running speed of the three regions with the ambient wind speed , air temperature, load changes the law, wind speed, air temperature and changes in unit load fan swarm optimization run the program . The results showed that : when the wind speed increased from 3m / s to 10m / s , the windward side of the first row of the best speed in 78-86r/min change the windward side of the first column in 68-84r/min changes , the remaining parts in 42-48r/min change ; the wind temperature increased from 18 ℃ to 34 ℃ , the windward side of the first row of the best speed in 70-76r/min change the windward side of the first column in 62-66r/min , the remaining parts in 36-40r/min ; windward side when the load increased from 60% to 100 % , the first row of the best speed in 56-78r/min changes in the first column of the windward side 54-68r/min changes in the remaining parts in 26-42r/min changes . In economic operation under different environmental parameters , load regulation and wind fleet layout and parameters designed to provide a reference for the direct air cooling unit fan group .

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CLC: > Industrial Technology > Electrotechnical > Power generation, power plants > Power plant > Thermal power plants, thermal power stations
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