Comprehension of several questions in engineering thermodynamics course 對工程熱力學(xué)課程中幾個問題的理解
This paper is based on the theory of engineering thermodynamics . the research object is unclosed - cycle - form partial - flow two - stage impulse torpedo turbine . first we study the design condition of torpedo turbine 本文以工程熱力學(xué)為理論基礎(chǔ),以魚雷開式循環(huán)部分進氣純沖動式復(fù)速級渦輪發(fā)動機為研究對象。
Taught in the following specialities : engineering thermodynamics , compressors , refrigeration & cryogenics , thermodynamics & power . the professional titles are : assistant professor ( 1958 ) , associate professor ( 1981 ) , professor ( 1986 ) 在西安交通大學(xué)工程熱物理專業(yè)、壓縮機專業(yè)、制冷與低溫工程專業(yè)、熱能與動力工程專業(yè)任教,職務(wù)為:助教( 1958 ) 、副教授( 1981 ) 、教授( 1986 ) 。
Based on the theory of engineering thermodynamics , inner parameter and thermodynamic calculation mathematic model of turbine engine were established . the thermodynamic calculation and the structure design of torpedo turbine engine were completed at the same time 以工程熱力學(xué)為基礎(chǔ),建立了渦輪機內(nèi)部參數(shù)和熱力計算的數(shù)學(xué)模型,并對魚雷渦輪機的各個部分進行了熱力計算和結(jié)構(gòu)設(shè)計計算。
With the engineering thermophysics subject as a main theory basis , the boiler , the steam turbine , the internal combustion engine and the other new , being developed power machinery and system as the research object , the application of engineering thermodynamics , heat transfer , computer system control theory , environmental science , microelectronics technology , energy - saving technology and other knowledge , study the process and the basic law of fuels chemical energy and liquid kinetic energy to converse to the power securely and efficiently and low ( or no ) impurely ; study the energy conversion process systems and technology of equipment automatic control ; study the producing mechanism and emission control technology of combustion pollutants ; study energy - saving technologies and the development of new energy technologies 熱能工程是以工程熱物理學(xué)科為主要理論基礎(chǔ),以鍋爐、汽輪機、內(nèi)燃機和正在發(fā)展中的其它新型動力機械及系統(tǒng)為研究對象,運用工程熱力學(xué)、傳熱學(xué)、計算機自動控制理論、環(huán)境科學(xué)、微電子技術(shù)、節(jié)能技術(shù)等學(xué)科的知識,研究燃料的化學(xué)能和液體的動能安全、高效、低(或無)污染地轉(zhuǎn)換成動力的基本規(guī)律和過程;研究能量轉(zhuǎn)換過程中的系統(tǒng)和設(shè)備的自動控制技術(shù);研究燃燒污染物生成機理與排放控制技術(shù);研究節(jié)能技術(shù)與新能源的開發(fā)技術(shù)。
According to the theory of engineering thermodynamics and phase change , heat - transfer process of the special working fluid heat - pipe stove is analyzed . some hypotheses are postulated and with the help of equation of mass - conservation , energy - conservation , the dynamic concentrative parameter model is built , the change of each parameter is prescribed at any stage from starting to stopping . with the thermodynamic calculation of burnable process , the parameter of device , such as heat - transfer coefficient / thermal efficiency etc , are achieved under steady state ; based on theoretic calculation , observing the actual running circumstance of the heating stove in person , with some performance comparison between the new and the old , the high efficiency and reliability of heat - pipe stove is proved , the project which expend it in the oil - filed is feasible 對充入該工質(zhì)的熱管加熱爐,本文根據(jù)工程熱力學(xué)和相變傳熱學(xué)及相關(guān)知識,對其進行了傳熱分析,經(jīng)過適當假設(shè),運用質(zhì)量守恒和能量守恒定律,建立了裝置動態(tài)集中參數(shù)模型,描述了加熱爐從開機到穩(wěn)定運行這一動態(tài)過程各參數(shù)的變化情況,同時對燃燒過程也進行了熱力計算,最終得到了穩(wěn)態(tài)工況下裝置的換熱系數(shù)、熱效率等熱力參數(shù);在理論計算的基礎(chǔ)上,親赴現(xiàn)場觀察該爐的實際運行情況,通過與原有的加熱爐的各項性能進行對比,最終證明新爐的高效性和可靠性,為其在油田中推廣的可行性提供了依據(jù)。