放熱化學反應 的英文怎麼說
中文拼音 [fàngrèhuàxuéfǎnyīng]
放熱化學反應
英文
exothermal chemical reaction-
These stresses arise from the exothermic nature of the reaction during gelatin and cure.
這種殘余應力系由凝膠和固化期間化學反應能放出的熱引起的。The most important exothermal reactions in the crust can be expected from the chemical transformations of sulfides.
地殼中能夠料想到的最重要的放熱化學反應是硫化物的化學轉變。The pilot fuel model has been given to calculate the distribution of the liquid fuel and time of fuel pre - combustion, at the same time, analyzing the important action to the combustion of the natural gas in the combustion chamber of engine, determining the best quantity of pilot fuel. the explosive combustion model has been established to compute the pressure of the cylinder during the combustion, determining the main influence factors. the emission model has been established to forecast the co, nox emission
理論方面,提出了基於化學反應的燃燒模型?多組分氣相反應系統的化學反應動力學模型,以此進行雙燃料發動機的熱力學?化學反應動力計算;引燃油燃燒模型,計算引燃油液滴的分佈規律和滯燃期,驗證引燃油在雙燃料發動機燃燒過程中的作用,揭示不同噴油規律對雙燃料發動機的影響,確定在不同負荷下的合理引燃油量;爆震模型,揭示爆震與工質能量釋放間的關系和影響爆震的各種運轉因素,確定合理的爆震依據,減小爆震傾向。The heat released from chemical reactions in its interior has no significance for the heat balance of the earth.
地球內部化學反應釋放的熱對于地球的熱平衡並不重要。In the beginning of cold - start, the monolith is heated only by the gas ; after light - off, the monolith is heated by the heat released by the chemical reaction
在冷起動初始階段,載體僅受排氣的加熱;當載體的溫度達到起燃溫度后,化學反應伴隨的放熱進一步加熱載體,使其溫度迅速上升。Then an approach was put forward to evaluate the potential risk of thermal runaway in exothermic reaction system by use of system safety index, and the equilibrium region of exothermic reaction systems was analyzed
提出用系統安全指數概念來評價放熱反應系統發生熱爆炸的潛在危險性,分析化學放熱系統的平衡域。Heat and light can be given off by this chemical change
這種化學反應能放出熱和光。The formulation for the flow model is given using the finite element / control volume ( fe / cv ) technique based on darcy ' s law of creeping flow through a porous media. the heat transfer model is based on the two - dimensional, transient heat conduction equation, including heat generation. the cure kinetics model is based on kamal ' s model, and the degree of the resin cure as a function of temperature and time
樹脂流動階段的模擬是根據牛頓流體在多孔介質中的滲流理論,應用darcy定律並使用有限元/控制體技術建立起來的;熱傳遞模型是一個二維瞬態熱傳導方程,考慮樹脂反應放熱;樹脂的固化模型利用了kamal提出的固化動力學方程,將固化度取為時間和溫度的函數。It is indicated that the hydration process of cement - based materials with slag, fly ash and silica fume is different in some degree from that of neat cement because of the difference in mineral structure and hydration mechanism. the periods of accelerating, decelerating and terminating are prolonged and hydration reaction decelerates. the second peak of rate curve of the heat evolution could be divided into two small peaks, which are contributed to the hydration of clinkers and mineral mixtures at the temperature of 30 but when temperature comes to 50, the two small peaks combine into one and the reaction accelerates
結果表明,與硅酸鹽水泥相比,由於礦物摻合料與水泥熟料在活性和水化機理上的差異,水化歷程有較大的改變:多組分體系誘導期、加速期和衰減期延長,水化反應速率明顯降低;低溫時,水化放熱速率曲線上的第二放熱峰細化成分別對應于熟料和礦物摻合料水化的兩個小峰;高溫時,反應速率加快,雙峰合併;進一步研究發現,摻合料的種類與摻量對水化歷程也有較大的影響;建立了適用於多組分水泥基材料不同水化階段的水化動力學方程。From the viewpoint of safety technology of chemical reaction with heat release. the technical causes of getting out of control of these reactors are analyzed. hazardous effects of the leakage of chemical reactants both on human and environment, and the existing problems in current safety technological measures are also discussed. the cooling method of jet vaporization based on the jet principle and the direct cooling by non - vaporized liquid are introduced. the development trends of the safety technology for chemical reactors are analyzed
從放熱化學反應的安全技術觀點出發,分析了放熱化學反應器失控的技術原因、化學反應物泄漏對人員和環境造成的危害、現有安全技術措施存在的問題;介紹了基於射流原理的噴射汽化和非汽化冷卻液體的直接冷卻方法;還展望了化學反應器安全技術的發展方向。Abstract : from the viewpoint of safety technology of chemical reaction with heat release. the technical causes of getting out of control of these reactors are analyzed. hazardous effects of the leakage of chemical reactants both on human and environment, and the existing problems in current safety technological measures are also discussed. the cooling method of jet vaporization based on the jet principle and the direct cooling by non - vaporized liquid are introduced. the development trends of the safety technology for chemical reactors are analyzed
文摘:從放熱化學反應的安全技術觀點出發,分析了放熱化學反應器失控的技術原因、化學反應物泄漏對人員和環境造成的危害、現有安全技術措施存在的問題;介紹了基於射流原理的噴射汽化和非汽化冷卻液體的直接冷卻方法;還展望了化學反應器安全技術的發展方向。Great difference in pressure for two flow made pressure wave system and it help to extend the delay time for gas in chamber, which increases combustion effusion. second, to increase combustion effusion, the inlet temperature of air and gas should be enhanced in the range of heat releasing in chemical reaction. third, the first work condition is unburned absolutely and the second work condition is burnt in shear layer of inlet and the end of down wall zone in straight segment
對于壓力差很大的兩股氣流,所形成的壓縮波系的結構可以增加燃氣駐留時間,提高燃燒穩定性;為了提高擴散燃燒的效率,在保證能放熱的化學反應溫度范圍之內,應適當提高燃氣及空氣的來流入口溫度;燃氣噴嘴應居於燃燒室軸線上,是改進超音速燃燒室結構的一種思路。Coal - char pyrolysis, firing, burnt and limestone calcination under o _ ( 2 ) / n _ ( 2 ) oro _ ( 2 ) / co _ ( 2 ) atmosphere were carried on a thermobalance. limestone calcination and sulfuration under o _ ( 2 ) / co _ ( 2 ) atmosphere were tested on a bench scale fluidized bed facility. the characteristics of coal combustion and pollutant emission under o _ ( 2 ) / n _ ( 2 ) or o _ ( 2 ) / co _ ( 2 ) atmosphere were experimented on a circulating fluidized bed multi - function test - facility
在熱天平上進行o _ 2 / n _ 2氣氛與o _ 2 / co _ 2氣氛下的煤焦熱解、著火與燃燼反應動力學及石灰石煅燒分解特性研究;在小型流化床試驗臺上進行石灰石在o _ 2 / co _ 2氣氛下的煅燒與硫化反應特性研究;在設計、搭建的循環流化床多功能綜合試驗臺上進行o _ 2 / n _ 2氣氛與o _ 2 / co _ 2氣氛下的煤燃燒特性與污染物排放規律研究。Then, the one dimensional model is used to study on some factors ( viscosity, the heat given out by the chemical reaction in the chemical laser ) which bring the loss of the total pressure. the answer shows that increasing the mach number at out of the nozzles in the laser can reduce the loss of the total pressure
在此基礎上,用簡化的一維模型研究了引起激光器總壓損失的幾個要素,它們是:噴管的粘性損失,光腔內的放熱化學反應。研究的結果表明,提高噴管出口馬赫數有利於減少這些因素導致的總壓損失。This paper discussed the thermal equilibrium and critical condition in exothermic reaction system, and deduced the values of dynamic parameters such as the judging criterion for thermal runaway, the ignition temperature and extinction temperature in the critical state of thermal runaway when there is no consumption of reaction materials
摘要討論化學放熱系統的熱穩定性和臨界條件,用化學反應物無消耗的假設推導化學放熱系統熱失控(熱爆炸)時的動力學參數臨界值,得到熱失控的判據、臨界點火溫度和熄火溫度。In the theoretical aspect, performance analytical model of was proposed, in which allowances were made to allow for variable cross - sectional area, include the heat release of chemical reaction, and allow for mass addition. software was generated, and performance of rocket ejector was analyzed accounting for heat release location, flow parameters and structural configuration
在理論方面,建立了引射火箭模態的性能分析模型,該模型考慮了化學反應放熱、加質和變幾何截面的影響;編寫了相應的軟體,並結合放熱位置、流動參數和發動機結構進行了引射火箭的概念設計。To analysis combustor structure ’ s contribution to fluxion and combustion explicitly, it is necessary to study the impaction of wave system and fire temperature on chemical reaction and heat release ’ s procedure
為了細致分析燃燒室結構和流動進口參數對超燃的作用關系,必須細化研究超音速流場的波系結構和燃氣溫度對化學反應放熱過程的影響。For example, if the energy from an exothermic chemical reaction is absorbed in a container of water, the change in temperature of the water provides a measure of the amount of heat added
舉例來說,如果能由一個放熱化學反應所吸收,在一個貨櫃內的水,這一變化在水溫提供了一個衡量的數額熱量補充。Measurement of the amount of heat evolved or absorbed in a chemical reaction, change of state, or formation of a solution
反應熱測量對某一化學反應過程、狀態變化過程或一溶解過程釋放也或吸收的熱量所作的測量分享友人