【摘要】：熱聲發(fā)動(dòng)機(jī)是一種將熱能轉(zhuǎn)換為聲功的設(shè)備,具有環(huán)保、無(wú)運(yùn)動(dòng)部件等優(yōu)點(diǎn)。行波型熱聲發(fā)動(dòng)機(jī)的轉(zhuǎn)換效率可達(dá)0.3,可以和傳統(tǒng)的發(fā)動(dòng)機(jī)相媲美。本文依據(jù)熱聲基本理論,利用聲電比擬,結(jié)合現(xiàn)有的swift熱聲網(wǎng)絡(luò)理論,對(duì)行波型熱聲發(fā)動(dòng)機(jī)進(jìn)行了集總參數(shù)法分析,建立了完整的行波型熱聲發(fā)動(dòng)機(jī)的網(wǎng)絡(luò)模型圖。利用熱聲網(wǎng)絡(luò)模型計(jì)算了回?zé)崞髦械南辔徊詈蛪毫Σǜ固幍膲毫Ψ荡笮?并與DeltaEC計(jì)算進(jìn)行了比較。分析了回?zé)崞骺紫抖群椭C振管長(zhǎng)度對(duì)系統(tǒng)性能的影響,為熱聲發(fā)動(dòng)機(jī)的設(shè)計(jì)提供了理論指導(dǎo)。在行波熱聲網(wǎng)絡(luò)模型的基礎(chǔ)上,利用DeltaEC軟件設(shè)計(jì)了一臺(tái)行波型熱聲發(fā)動(dòng)機(jī),并以氦氣作為氣體工作介質(zhì)進(jìn)行了實(shí)驗(yàn)研究。定量的研究了系統(tǒng)充氣壓力、加熱功率對(duì)系統(tǒng)頻率、振蕩壓力幅值和壓比的影響,得到了在壓力一定時(shí),加熱功率與頻率、聲功和壓比的關(guān)系,以及在加熱功率一定時(shí),系統(tǒng)壓力與頻率、聲功和壓比的關(guān)系;提出了提高熱聲系統(tǒng)效率的途徑,實(shí)現(xiàn)熱聲系統(tǒng)已最小的代價(jià)獲得最大收益,使熱聲發(fā)動(dòng)機(jī)向?qū)嵱没~進(jìn)了一步。
[Abstract]:Thermoacoustic engine is a kind of equipment for converting heat energy into acoustic power, which has the advantages of environmental protection and no moving parts. The conversion efficiency of traveling wave thermoacoustic engine can reach 0.3, which can be compared with the traditional engine. Based on the basic theory of thermoacoustic, using acoustoelectric analogy and the existing swift thermoacoustic network theory, this paper analyzes the traveling wave thermoacoustic engine by lumped parameter method, and establishes a complete network model diagram of the traveling wave thermoacoustic engine. The phase difference in the regenerator and the pressure amplitude at the pressure wave belly are calculated by using the thermoacoustic network model and compared with the DeltaEC calculation. The influence of the porosity of the regenerator and the length of the resonant tube on the performance of the system is analyzed, which provides theoretical guidance for the design of the thermoacoustic engine. Based on the traveling wave thermoacoustic network model, a traveling wave thermoacoustic engine is designed by using DeltaEC software. The effects of gas pressure and heating power on system frequency, oscillatory pressure amplitude and pressure ratio are quantitatively studied. The relationship between heating power and frequency, acoustic power and pressure ratio is obtained when the heating power is constant, and when the heating power is constant, the relationship between heating power and frequency, acoustic power and pressure ratio is obtained. The relationship between system pressure and frequency, acoustic power and pressure ratio; A way to improve the efficiency of thermoacoustic system is put forward to realize the minimum cost of thermoacoustic system and obtain the maximum benefit, which makes the thermoacoustic engine a step forward in practical use.
【學(xué)位授予單位】：遼寧科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TK05

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本文編號(hào)：2296469