提高火電廠的發(fā)電效率是解決能源和資源節(jié)約問題的關(guān)鍵問題之一。目前,俄羅斯的電力主要來自于傳統(tǒng)汽輪機設(shè)備的火力發(fā)電廠,其發(fā)電效率一般在35⁴0%。近些年來,隨著燃?xì)廨啓C和聯(lián)合循環(huán)技術(shù)的使用,老舊火電廠也同時進行著相應(yīng)的改造或重新建設(shè)�；鹆Πl(fā)電廠已達(dá)到一定的極限,燃?xì)廨啓C和聯(lián)合循環(huán)燃?xì)廨啓C,具有很大的改進潛力。目前,對于熱電廠,使用燃?xì)廨啓C和聯(lián)合循環(huán)技術(shù)是必然的趨勢。許多國家運用這種技術(shù),顯著提高電廠效率,同時也能改善環(huán)境。此外,俄羅斯天然氣的儲存價格相對較低,以及削減燃煤電廠有害排放的任務(wù)越來越緊迫,使得我們對天然氣的使用越來越重視。通常情況下,發(fā)達(dá)國家使用煤炭發(fā)電已逐漸被廢棄。對于燃煤電廠的改造一般有下列三種方式:1)全部更換為新的燃?xì)廨啓C聯(lián)合循環(huán)裝置;2)拆除燃煤鍋爐,加裝燃?xì)廨啓C,利用余熱鍋爐,汽輪機進行同步的改造,這種方式的成本低于安裝新的燃?xì)廨啓C聯(lián)合循環(huán)裝置;3)將燃煤鍋爐采用天然氣進行燃燒。與另外兩種方案相比,這種方法的優(yōu)點是資金成本低、對現(xiàn)有裝置的影響小、實現(xiàn)方便且燃料充足。由于將燃煤鍋爐轉(zhuǎn)換為天然氣,在壓力下運行的鍋爐與在真空下運行的鍋爐有很大的不同... 

【文章來源】：哈爾濱工業(yè)大學(xué)黑龍江省 211工程院校 985工程院校

【文章頁數(shù)】：88 頁

【學(xué)位級別】：碩士

【文章目錄】：
詳細(xì)摘要
Abstract
Chapter 1 Introduction
    1.1 The research background,Purpose and significance of thesis
        1.1.1 The research background
        1.1.2 The research purpose
        1.1.3 Significance of the research
    1.2 Research inside and outside of country and analysis
        1.2.1 Analysis of thermal schemes of production of thermal and electric energy in gas turbines and CCGT
        1.2.2 Methods of optimizing the parameters of gas turbines and CCGT
        1.2.3 Gas turbine unite
Chapter 2 Improvement of thermal schemes of gas turbines and CCGT mixing and methods of their calculation on a computer
    2.1 Improvement of thermal schemes of gas turbines and CCGT
    2.2 Modeling of the generalized thermal circuit of gas turbines and CCGT mixing on the computer
    2.3 Chapter summary
Chapter 3 The mathematical model of generalized thermal circuit
    3.1 The mathematical model of generalized thermal circuit of the gas turbine and CCGT mixing with using graph theory
    3.2 Graph flow capacity of the gas turbine
    3.3 Chapter summary
Chapter 4 Schemes of CCGT combined with water vapor injection steam
    4.1 Schemes and cycles of working bodies of the CCGT with the injection of water vapor,gas turbine and combined cycle with stepwise heat supply
    4.2 Thermodynamic assessment of the schemes of combined injection of water vapor,gas turbine and combined cycle with stepwise heat supply
        4.2.1 Thermodynamic evaluation of schemes of combined with the use of injection of water vapor from the waste heat boiler
        4.2.2 Thermodynamic evaluation of schemes of gas turbines and CCGT with stepwise heat supply in the main and additional parallel to the combustion chamber
    4.3 Chapter summary
Conclusion
References
Acknowledgements
Resume



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