| 双压凝汽器闭式循环水系统的最优运行方式 |
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| 引用本文： | 曾德良,王玮,刘吉臻,张志刚.双压凝汽器闭式循环水系统的最优运行方式[J].热能动力工程,2011,26(2). |
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| 作者姓名： | 曾德良 王玮 刘吉臻 张志刚 |
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| 作者单位： | 1. 华北电力大学,控制与计算机工程学院,北京,102206
2. 大唐国际天津盘山电厂,天津,301900 |
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| 基金项目： | 国家自然科学基金资助项目(51036002) |
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| 摘 要： | 循环水入口温度是决定循环水泵最优运行方式的重要参数。对于开式循环水系统来说,循环水入口温度即环境温度;但对于闭式循环水系统来说,循环水入口温度为冷却塔出塔水温。以逆流式冷却塔为研究对象,结合冷却塔热平衡计算方程式,通过迭代计算的方法确定出了循环水泵在不同运行方式时的冷却塔出塔水温,同时提出了入塔风速的软测量方法,而此前文献都是通过空气动力计算来获得入塔风速的。针对出塔水温和入塔风速在计算过程中存在的非线性方程多解问题,作了详细探讨,并最终确定了其符合物理意义的真实解。最后,将其应用到双压凝汽器中,由此得出的循环水泵最优运行方式对现场具有一定的指导意义。
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| 关 键 词： | 入塔风速 出塔水温 双压凝汽器 最优运行 |
Optimal Operation Mode of a Dual-pressure Condenser Closed Type Circulating Water System |
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| ZENG De-liang,WANG Wei,LIU Ji-zhen,ZHANG Zhi-gang.Optimal Operation Mode of a Dual-pressure Condenser Closed Type Circulating Water System[J].Journal of Engineering for Thermal Energy and Power,2011,26(2). |
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| Authors: | ZENG De-liang WANG Wei LIU Ji-zhen ZHANG Zhi-gang |
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| Affiliation: | ZENG De-liang,WANG Wei,LIU Ji-zhen(College of Control and Computer Engineering,North China University of Electric Power,Beijing,China,Post Code: 102206),ZHANG Zhi-gang(Datang International Tianjin Panshan Power Plant,Tianjin,Post Code: 301900) |
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| Abstract: | Circulating water inlet temperature is regarded as an important parameter for determining the optimal operation mode of a circulating water pump.For an open type circulating water system,the circulating water inlet temperature represents the ambient temperature.For a closed type one,however,it denotes the cooling tower outlet water temperature.With a counterflow type cooling tower serving as an object of study,in combination with the heat balance calculation formulae for a cooling tower and by adopting an i... |
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| Keywords: | tower ingoing air speed tower outgoing water temperature dual-pressure condenser optimal operation |
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