【摘要】：熱聲發(fā)動機是一種將熱能轉換為聲功的設備,具有環(huán)保、無運動部件等優(yōu)點。行波型熱聲發(fā)動機的轉換效率可達0.3,可以和傳統(tǒng)的發(fā)動機相媲美。本文依據熱聲基本理論,利用聲電比擬,結合現(xiàn)有的swift熱聲網絡理論,對行波型熱聲發(fā)動機進行了集總參數法分析,建立了完整的行波型熱聲發(fā)動機的網絡模型圖。利用熱聲網絡模型計算了回熱器中的相位差和壓力波腹處的壓力幅值大小,并與DeltaEC計算進行了比較。分析了回熱器孔隙度和諧振管長度對系統(tǒng)性能的影響,為熱聲發(fā)動機的設計提供了理論指導。在行波熱聲網絡模型的基礎上,利用DeltaEC軟件設計了一臺行波型熱聲發(fā)動機,并以氦氣作為氣體工作介質進行了實驗研究。定量的研究了系統(tǒng)充氣壓力、加熱功率對系統(tǒng)頻率、振蕩壓力幅值和壓比的影響,得到了在壓力一定時,加熱功率與頻率、聲功和壓比的關系,以及在加熱功率一定時,系統(tǒng)壓力與頻率、聲功和壓比的關系;提出了提高熱聲系統(tǒng)效率的途徑,實現(xiàn)熱聲系統(tǒng)已最小的代價獲得最大收益,使熱聲發(fā)動機向實用化邁進了一步。
[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.
【學位授予單位】：遼寧科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TK05

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本文編號：2296469