本文選題：不同布置方式 + 溫排水�。� 參考：《華北電力大學(xué)》2016年碩士論文

【摘要】：隨著經(jīng)濟(jì)的快速發(fā)展,電能已經(jīng)成為不可或缺的能源之一,對經(jīng)濟(jì)的發(fā)展和人民生活水平的提高起著至關(guān)重要的作用。作為電能輸出的重要部門,電廠已經(jīng)有了大規(guī)模的發(fā)展,對于很多采用直流冷卻方式對機(jī)組進(jìn)行冷卻的電廠來說,大量溫排水連續(xù)不斷地排入自然水域,會對水域的環(huán)境生態(tài)造成不同程度的熱影響,因此受納水域中的魚類、藻類等物種的生長和繁殖也將會受到嚴(yán)重影響。而生態(tài)系統(tǒng)中的各個組成物種之間又是相互聯(lián)系和制約的,因此,溫排水造成的熱影響將會對整個水域環(huán)境生態(tài)系統(tǒng)造成影響。本文首先利用FLUENT軟件對底部垂直式中的工況1進(jìn)行數(shù)值模擬,將結(jié)果與已有文獻(xiàn)中的試驗(yàn)結(jié)果進(jìn)行對比。然后,在對比結(jié)果基本一致的情況下,利用該方法對側(cè)向中部式、側(cè)向底部式、同流中部式三種不同的溫排水布置方式分別在相同四種工況下的溫升情況進(jìn)行模擬,分析了每種布置方式下溫排水溫升擴(kuò)散規(guī)律以及對水域環(huán)境生態(tài)影響程度。最后,利用綜合指數(shù)評價方法對不同布置方式下溫排水對受納水域中的魚類、藻類、浮游動物、底棲動物這四種熱影響指標(biāo)分別在夏季及冬季兩個不同季節(jié)下造成的生態(tài)環(huán)境熱影響進(jìn)行綜合評價,總結(jié)出不同布置方式下溫排水對水域生態(tài)環(huán)境的影響特點(diǎn)和規(guī)律,得出了對水域環(huán)境生態(tài)系統(tǒng)影響最大和最小的溫排水布置方式,為實(shí)際工程中溫排水方式的優(yōu)化選取可提供一定的依據(jù)。
[Abstract]:With the rapid development of economy, electric energy has become one of the indispensable energy sources, which plays a vital role in the development of economy and the improvement of people's living standard. As an important sector of electric power output, power plants have developed on a large scale. For many power plants that use direct current cooling methods to cool their units, a large number of warm water drains are continuously discharged into natural waters. Therefore, the growth and reproduction of fish, algae and other species in the receiving waters will also be seriously affected. However, each species in the ecosystem is interrelated and restricted. Therefore, the thermal effect caused by temperature drainage will affect the whole water environment ecosystem. In this paper, FLUENT software is first used to simulate the working condition 1 in the bottom vertical equation, and the results are compared with the experimental results in the previous literatures. Then, under the condition that the comparison results are basically the same, the temperature rise of three different temperature and drainage arrangements under the same four working conditions are simulated by using this method, including the lateral middle type, the lateral bottom type and the same flow middle type. The law of temperature rise and diffusion of temperature drainage and the degree of ecological influence on water environment under each arrangement are analyzed. Finally, the comprehensive index evaluation method is used to evaluate the effects of temperature drainage on fish, algae and zooplankton in the receiving waters under different arrangements. The ecological and environmental thermal effects caused by the four heat impact indexes of benthos in summer and winter were evaluated synthetically, and the characteristics and rules of the effects of temperature drainage on the ecological environment of water area under different arrangement were summarized. The temperature drainage layout which has the greatest and least influence on the water environment ecosystem is obtained, which can provide a certain basis for the optimum selection of the temperature drainage mode in the actual engineering.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：X57;X82

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 程友良;蔣衍;渠江曼;薛占璞;武凱;;直流冷卻電廠溫排水布置方式對魚類的熱影響分析[J];熱力發(fā)電;2017年06期

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本文編號：1824459