本文選題：熱聲發(fā)電 + 曲柄連桿��； 參考：《工程熱物理學(xué)報》2017年11期

【摘要】：熱聲發(fā)電系統(tǒng)具有高效、可靠、結(jié)構(gòu)簡單及外燃等獨特優(yōu)勢,在煤層氣發(fā)電、太陽能發(fā)電及工業(yè)余熱利用等領(lǐng)域應(yīng)用前景廣闊。本文針對用于熱聲發(fā)電的曲柄連桿式換能器,建立了物理模型,討論了活塞質(zhì)量、轉(zhuǎn)動慣量及電路負載對換能器阻抗特性的影響,表明固定頻率、振幅的壓力波驅(qū)動下,由于曲柄連桿式換能器行程固定,其阻抗幅值不變,而相位角隨負載電阻減小而減小,阻抗實部值相應(yīng)增大。最后根據(jù)換能器阻抗特性,簡化模擬了采用曲柄連桿式換能器的行波熱聲發(fā)電系統(tǒng)DeltaEC模型,模擬顯示在充氣壓力3.16 MPa、熱源溫度650℃時,系統(tǒng)可輸出約645.4 W電功(熱電效率16.6%),表明此換能器用于大功率、低成本熱聲發(fā)電的優(yōu)勢。本研究為曲柄連桿式換能器與大功率熱聲熱機高效匹配的應(yīng)用提供了理論基礎(chǔ)。
[Abstract]:Thermoacoustic power generation system has many unique advantages, such as high efficiency, reliability, simple structure and external combustion. It has a broad application prospect in the fields of coal-bed methane power generation, solar power generation and industrial waste heat utilization. In this paper, the physical model of crank connecting rod transducer for thermoacoustic power generation is established. The effects of piston mass, moment of inertia and circuit load on the impedance characteristics of the transducer are discussed. Because the stroke of crank and connecting rod transducer is fixed, the impedance amplitude is constant, while the phase angle decreases with the decrease of load resistance, and the real part of impedance increases accordingly. Finally, according to the impedance characteristics of the transducer, the DeltaEC model of the traveling wave thermoacoustic generation system using crank and connecting rod transducer is simplified. The simulation shows that the temperature of the heat source is 650 鈩，

本文編號：1910669