本文選題：槽式集熱系統(tǒng) + 動(dòng)態(tài)仿真　； 參考：《華北電力大學(xué)》2015年碩士論文

【摘要】：太陽(yáng)能輔助燃煤發(fā)電系統(tǒng)將清潔的太陽(yáng)能與傳統(tǒng)燃煤火力發(fā)電機(jī)組進(jìn)行互補(bǔ),用太陽(yáng)輻照熱量替代部分化石燃料,可有效利用可再生能源,降低太陽(yáng)能熱發(fā)電成本,同時(shí)減少常規(guī)火力發(fā)電過程的燃煤消耗,符合全球化節(jié)能減排大趨勢(shì)的發(fā)展要求。本文主要對(duì)拋物槽式太陽(yáng)能真空管集熱器及槽式太陽(yáng)能集熱系統(tǒng)輔助燃煤發(fā)電系統(tǒng)進(jìn)行了相關(guān)仿真研究,主要成果與創(chuàng)新點(diǎn)概述如下：(1)基于槽式太陽(yáng)能集熱器的基本結(jié)構(gòu)及其聚光集熱特點(diǎn),對(duì)槽式集熱器的光熱轉(zhuǎn)換和能量傳遞過程展開研究,充分考慮工作流體物性變化對(duì)其傳熱流動(dòng)性能的影響,建立起多熱容變物性的集熱器動(dòng)態(tài)數(shù)學(xué)模型并進(jìn)行了驗(yàn)證。(2)將驗(yàn)證后的模型用于仿真模擬,系統(tǒng)分析了槽式太陽(yáng)能集熱器在太陽(yáng)輻照、導(dǎo)熱油參數(shù),風(fēng)速及環(huán)境溫度等條件變化下不同運(yùn)行工況時(shí)的靜態(tài)和動(dòng)態(tài)運(yùn)行性能。(3)在STAR-90仿真支撐平臺(tái)上搭建起槽式太陽(yáng)能集熱系統(tǒng),對(duì)不同太陽(yáng)輻照及流速下集熱場(chǎng)的布置方式進(jìn)行仿真模擬,得到不同工況條件下集熱系統(tǒng)所耗泵功和集熱效率,進(jìn)而得到使得折合效率最高的最優(yōu)支路布置和流速設(shè)計(jì)。(4)選取某一特定最優(yōu)工況下槽式太陽(yáng)能集熱系統(tǒng)與仿真平臺(tái)上330MW燃煤機(jī)組通過油水換熱器進(jìn)行耦合,得出槽式集熱系統(tǒng)中油水換熱器中給水量變化時(shí),互補(bǔ)發(fā)電系統(tǒng)各項(xiàng)運(yùn)行參數(shù)的變化趨勢(shì),最后對(duì)集熱系統(tǒng)內(nèi)導(dǎo)熱油流量和太陽(yáng)輻照量的改變對(duì)整個(gè)互補(bǔ)系統(tǒng)運(yùn)行情況的影響進(jìn)行了靈敏度分析。
[Abstract]:Solar assisted coal-fired power generation system can effectively utilize renewable energy and reduce the cost of solar thermal power generation by complementing clean solar energy with traditional coal-fired thermal generating units and replacing some fossil fuels with solar radiation heat. At the same time, reducing coal consumption in conventional thermal power generation process is in line with the development of global trend of energy saving and emission reduction. In this paper, the related simulation research on parabolic trough solar vacuum tube collector and trough solar energy collector auxiliary coal-fired power generation system is carried out. The main achievements and innovations are summarized as follows: (1) based on the basic structure of the trough solar collector and the characteristics of the condensing solar collector, the photothermal conversion and energy transfer process of the trough solar collector are studied. Considering the influence of working fluid physical properties on its heat transfer and flow performance, the dynamic mathematical model of multi-heat capacity and physical properties of collector is established and verified. (2) the verified model is used for simulation and simulation. The parameters of heat conduction oil and solar radiation of trough solar collector are systematically analyzed. Static and dynamic operating performance of different operating conditions under different operating conditions, such as wind speed and ambient temperature, etc.) the trough solar energy collector system is built on the STAR-90 simulation support platform. The distribution of collecting heat field under different solar irradiation and velocity is simulated, and the pump power and heat collection efficiency are obtained under different working conditions. Finally, the optimal branch layout and velocity design with the highest conversion efficiency are obtained.) the trough solar energy collector system is selected to be coupled with the 330MW coal-fired units on the simulation platform through oil-water heat exchangers under a specific optimal working condition. The variation trend of the operation parameters of complementary power generation system is obtained when the water supply in the oil-water heat exchanger changes in the tank type heat collector system. Finally, the sensitivity analysis of the effect of heat transfer oil flow and solar radiation on the operation of the whole complementary system is carried out.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TM61

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本文編號(hào)：1860495