發(fā)布時(shí)間：2018-01-23 00:15

  本文關(guān)鍵詞： 熱聲熱機(jī) 有限時(shí)間熱力學(xué) 新目標(biāo)函數(shù) 熱力學(xué)循環(huán) 優(yōu)化　出處：《武漢工程大學(xué)》2014年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：熱聲熱機(jī)是基于熱聲效應(yīng)原理的一種全新的能源轉(zhuǎn)換機(jī)械，由于其結(jié)構(gòu)組成簡(jiǎn)單、使用壽命長(zhǎng)、可靠性能高、能夠利用低品質(zhì)的能源實(shí)現(xiàn)廢熱的再利用以及工質(zhì)采用的是對(duì)環(huán)境無(wú)污染，無(wú)損害的綠色環(huán)保氣體，因此倍受學(xué)術(shù)界和工業(yè)界的關(guān)注。目前熱聲熱機(jī)已成為國(guó)內(nèi)、外一個(gè)研究熱點(diǎn)。 本文是在前人的研究基礎(chǔ)之上，，將效率代替效率作為研究對(duì)象，運(yùn)用有限時(shí)間熱力學(xué)的方法，引入新的目標(biāo)函數(shù)，對(duì)熱聲熱機(jī)的輸出聲功率（或制冷率）和效率之間的關(guān)系進(jìn)行優(yōu)化研究，并且分析了各種外在、內(nèi)在的影響因子對(duì)此優(yōu)化關(guān)系的影響，以便對(duì)熱聲熱機(jī)的理論和實(shí)際研究設(shè)計(jì)提供參考依據(jù)。本文主要的研究工作包括如下幾部分： 1、分析與研究熱聲發(fā)動(dòng)機(jī)的熱力學(xué)性能。研究?jī)?nèi)容主要分為兩部分，一是通過(guò)熱聲理論建立的熱聲熱機(jī)微熱力學(xué)循環(huán)，引入新的Z目標(biāo)函數(shù)，運(yùn)用有限時(shí)間熱力學(xué)的方法，對(duì)內(nèi)可逆即理想情況下和不可逆情況下熱聲發(fā)動(dòng)機(jī)熱聲微熱力循環(huán)的輸出聲功率和效率進(jìn)行了優(yōu)化分析研究；二是討論了復(fù)指數(shù)傳熱規(guī)律下不可逆熱聲發(fā)動(dòng)機(jī)的熱力學(xué)循環(huán)，同樣引入新的Z目標(biāo)函數(shù)，運(yùn)用有限時(shí)間熱力學(xué)的方法對(duì)復(fù)指數(shù)傳熱規(guī)律下熱聲發(fā)動(dòng)機(jī)的輸出聲功率和效率進(jìn)行了優(yōu)化分析研究。通過(guò)分析研究得出了熱聲發(fā)動(dòng)機(jī)的輸出聲功率和效率均為同一中間變量的單值函數(shù)，并且存在一最優(yōu)的中間變量，使得熱聲發(fā)動(dòng)機(jī)的輸出聲功率和效率最優(yōu)。 2、分析與研究了熱聲制冷機(jī)的熱力學(xué)性能。研究?jī)?nèi)容同熱聲發(fā)動(dòng)機(jī)，對(duì)復(fù)指數(shù)傳熱規(guī)律下的不可逆熱聲制冷機(jī)的循環(huán)模型中的制冷率和效率進(jìn)行了優(yōu)化分析研究。通過(guò)分析研究同樣得出了復(fù)指數(shù)傳熱規(guī)律下的不可逆熱聲制冷機(jī)的制冷率和效率也均為同一中間變量的單值函數(shù)，并且存在一最優(yōu)的中間變量，使得熱聲制冷機(jī)的制冷率和效率最優(yōu)。 3、介紹了吳治教授及其團(tuán)隊(duì)設(shè)計(jì)和開(kāi)發(fā)了一套人工智慧電腦輔助原動(dòng)力廠設(shè)計(jì)軟件（CyclePad）。利用該設(shè)計(jì)軟件，通過(guò)圖文并茂的形式，簡(jiǎn)單介紹了軟件的各項(xiàng)功能與應(yīng)用，并成功的模擬出了熱聲發(fā)動(dòng)機(jī)微熱力循環(huán)的理想循環(huán)Brayton-cycle。
[Abstract]:Thermoacoustic engine is a new energy conversion machine based on the principle of thermoacoustic effect, because of its simple structure, long service life and high reliability. Low quality energy can be used to achieve the reuse of waste heat and the use of working fluid is no pollution of the environment, no harm to the green gas. Therefore, it has attracted the attention of academia and industry. At present, thermoacoustic heat engine has become a research hotspot in China and abroad. In this paper, based on the previous studies, efficiency is taken as the object of study, and a new objective function is introduced by using the method of finite time thermodynamics. The relationship between the output acoustic power (or refrigeration rate) and the efficiency of thermoacoustic engine is optimized and the influence of various external and internal factors on the optimization relationship is analyzed. In order to provide a reference for the theoretical and practical research and design of thermoacoustic heat engine. The main research work of this paper includes the following parts: 1. The thermodynamics performance of thermoacoustic engine is analyzed and studied. The research is divided into two parts: one is the microthermodynamics cycle of thermoacoustic engine established by thermoacoustic theory, and the introduction of a new Z objective function. By using the finite time thermodynamics method, the output sound power and efficiency of thermoacoustic microthermal cycle of thermoacoustic engine under ideal and irreversible conditions are studied and optimized. Secondly, the thermodynamic cycle of irreversible thermoacoustic engine under the complex exponential heat transfer law is discussed, and a new Z objective function is also introduced. By using finite time thermodynamics, the output sound power and efficiency of thermoacoustic engine under the law of complex exponential heat transfer are optimized and studied. The results show that the output sound power and efficiency of thermoacoustic engine are as follows: 1. A single-valued function of the same intermediate variable. And there is an optimal intermediate variable, which makes the output sound power and efficiency of thermoacoustic engine optimal. 2Thermodynamic performance of thermoacoustic refrigerator is analyzed and studied. The refrigeration rate and efficiency in the cycle model of an irreversible thermoacoustic refrigerator under the complex exponential heat transfer law are studied and optimized. The irreversible thermoacoustic refrigerator under the complex exponential heat transfer law is also obtained through the analysis and study. The refrigeration rate and efficiency are also single-valued functions of the same intermediate variable. There is an optimal intermediate variable to optimize the refrigeration rate and efficiency of the thermoacoustic refrigerator. 3. Professor Wu Zhi and his team have designed and developed a set of artificial intelligence computer aided power plant design software, CyclePadn.Using this design software, through the form of picture and text. The functions and applications of the software are briefly introduced, and the ideal cycle Brayton-cycleof thermoacoustic engine microthermal cycle is successfully simulated.
【學(xué)位授予單位】：武漢工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TB65

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