放熱速率 的英文怎麼說
中文拼音 [fàngrèsùlǜ]
放熱速率
英文
heat liberation rate-
Abstract : in the research of internal combustion engine, recordingin - cylinder pressure and temperature is an essential technique to study the thermal cycle of internal combustion engine. the combustion analyzer developed in this study will give both the measurements at sampling points per crank angle or sampling cycle, calculate and show the real time parameters which decide the working process of internal combustion engine, such as pressure accelerating rate, indicateed mean effective pressure, cycle - to - cycle variation, heat release rate, etc. compared with the imported congeneric products, the analyzer has many advantages such as chinese interface, low price, easy operateing, convenience in maintainance and easy upgrading
文摘:為了測錄內燃機缸內的壓力及溫度，開發了一種內燃機燃燒分析儀.該分析儀由國產高速數據採集卡及自行開發的控制軟體組成.它不僅能精確設置每度曲軸轉角內采樣點的個數和採集循環數，而且在採集過程中能實時計算和表徵內燃機工作過程的壓力升高率、平均指示壓力、循環變動率、放熱率等參數.經實際使用以及與國外產品相比表明，此分析儀具有全中文界面、價格低、操作簡單、使用維護方便、功能便於擴充等優點Testing method of cryo - insulation pressure vessels leak and outgassing rate measurement
低溫絕熱壓力容器試驗方法漏放氣速率測量It ' s the first time to explore the combustion characteristics of lpg / diesel mixing fuel engine, and find that, with the change of load and rotation, the changing trend of the ignition delay period of e10 mixing fuel is almost as identical as that of the diesel, but that of e30 mixing fuel is very different. comparing with diesel, the combustion of e10 is improved slightly, but that of e30 greatly changes ; the maximum eruptive pressure decreases ; the maximum pressure increase rate decreases ; the highest releasing heat rate increases ; the highest combustion temperature falls ; the ignition delay period extends
結果表明: e10混合燃料與柴油的著火滯燃期隨負荷和轉速的變化趨勢基本一致; e30混合燃料與柴油則有所不同; eio混合燃料發動機的燃燒與純柴油相比，略有改善; e30混合燃料的燃燒特性發生明顯的變化，最高爆發壓力下降，最大壓力升高率減小，最大燃燒放熱率增大，最高燃燒溫度下降，滯燃期延長。Test results indicated : with the hoist of altitude, the increase of ice amount and the rise of pollutant, the average flashover voltage reduced. the character exponent generally depends on the insulator profile, ice amount, ice state and pollution severity etc. by means of a high - speed camera, a data acquisition system and high voltage test facilities, a series of the flashover processes on ice surfaces were record. the experimental results form this study and the subsequent theoretical analyses suggested : the thermal ionization of the air in front of an arc root resulted in arc movement ; the electrostatic force had an auxiliary effect of impelling arc propagation ; the electrical
通過對攝像機、數據採集系統及高壓試驗裝置記錄覆冰絕緣子表面閃絡電弧的發展過程的試驗結果進行理論分析得出：弧根周圍空氣的熱電離導致了電弧的發展，靜電場力對電弧的發展起到了加速作用，電擊穿僅發生在閃絡最終的跳躍階段；通過測量閃絡過程中的放電電壓、泄漏電流、閃絡時間、覆冰水電導率、電弧長度及電弧半徑等參數，得到了不同階段電弧（電弧起弧階段、電弧發展階段及完全閃絡）的發展速度、臨界電弧長度均隨覆冰水電導率的增加而減小。Standard test method for heat and visible smoke release rates for materials and products using an oxygen consumption calorimeter
利用氧消耗熱量儀測定材料和產品的熱和可見煙霧釋放速率的標準試驗方法In the isothermal crystallization experiment, the dsc exothermic curves become flat as decrease of the degrees of undercooling within the experimental temperatures
在等溫結晶實驗中，在所測試的結晶溫度范圍內，隨著過冷度的減小， dsc放熱曲線趨于變緩，結晶完成時間延長，結晶速率減小。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。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。Fire development processes of different combustion models were given and some corresponding parameters were also suggested
通過給出熱釋放速率、燃燒持續時間和油池火蔓延速度等關鍵參數的計算方法，詳細描述了其發展過程。In view of the poor thermal stability of polyoxymethylene ( pom ) induced by the residual catalyst and unstable end groups formed in the synthesis of pom. the pom was treated by amine, and the effects of the variety of amine compounds, treatment technology and water content on the thermal stability of pom were investigated ; the effect of triethanolamine on the thermal stability of pom was further studied by means of isothermal mass loss, isothermal mass loss rate, and formaldehyde emission amount
摘要針對聚甲醛由於合成中殘留催化劑及不穩定端基導致其熱穩定較差的問題，採用胺對聚甲醛進行處理，並考察了胺種類、胺處理工藝及水用量對聚甲醛熱穩定性能影響；採用等溫熱質量損失率、等溫熱質量損失速率、甲醛釋放量分析等方法對三乙醇胺對pom的熱穩定作用進行了進一步研究。Based on above, the characteristics of hydration hardening process and microstructure of hsc as well as the interfacial layer between cement paste and coarse aggregate are investigated under low water cement ratio, high content superplasticiser and with one kind or more than one kind of mineral materials condition, the reaction mechanisms of different mineral materials are also discussed
研究了不同水膠比、復合緩凝成分高效減水劑及礦物摻合料的摻加方式、摻量對高強混凝土水泥漿體水化放熱過程和水泥漿體的水化熱、水化放熱速率以及最高溫升的影響規律。探明了高強混凝土中水泥漿體的水化硬化過程、礦物摻合料之間的相互作用機理。It can be seen that fire growth and heat release rate curve can be obtained through the calculation of fire load and the estimation of fire spread, which can provide the input for the latter work and enhance the efficiency of fire protection analysis observably
可以看出，根據火災荷載的計算和火災蔓延可能性的討論，得到火災發展的變化情況和熱釋放速率曲線，能夠為之後的工作做好前期準備，同時顯著提高這項工作的效率。The results indicate that the critical ventilation speed is direct ratio to the heat release rate and reverse ratio to the height of the smoke barrier which lies in the stairs ' access between platform and concourse
研究表明：臨界通風速度與火災熱釋放速率成正比，與站臺和站廳間樓梯口處的檔煙垂壁高度成反比。Engine operating conditions cold be changed quickly and are very bad sometimes, such as : from suddenly cranking to driving in winter, acceleration to sudden torque demand. in the light of zero emission vehicles, in order to achieve better hot efficiency, maximum power, higher safety and best emission, engine controls become more and more difficult. automotive engines are typical nonlinear, time - delay, time - varying parameter systems
汽車發動機使用環境變化大，使用條件有時非常惡劣，從寒冷的冬天突然啟動進入行駛狀態，行駛過程中的突然加速，急劇的扭矩變化等等，在這樣的條件下，為了使其熱效率、輸出功率、行駛性、安全性和排氣清潔性處于最佳狀態，給汽車發動機的控制帶來了極大的困難，特別是零排放汽車排放標準的提出，對發動機控制提出了更高的要求。Test method for heat release rate of building materials
建築材料熱釋放速率試驗方法Experimental investigation on the leak and degassing rate of high vacuum multi - layer insulated dewar
高真空多層絕熱杜瓦漏放氣速率試驗研究Test method for determining the heat release rate of upholstered furniture and mattress components or composites using a bench scale oxygen consumption calorimeter
使用小型耗氧量熱計測定裝飾傢具和墊子組合件或組合材料熱釋放速率的測試方法Heat release rate study of a pool fire interacted with water mists using a cone calorimeter
利用錐型量熱計研究細水霧作用下的油池火熱釋放速率The testing methods of combustibles heat release rate based on mass 1oss rate is also introduced, the experimental figures and results are analysed in this paper
火源熱釋放速率的大小對於火災的溫度分佈及煙氣流動的影響較大。In this paper, the basic and important parts are studied. for example, the capacity of jet fan in tunnel, the flux distribution and resistance loss in the chimney. this approach is capable of modeling multi - dimensional, time dependent nature of fire in a road tunnel, this paper presents the critical ventilation velocity in various heat release rate and smoke release rate for jingfu highway
以京福高速公路美菰林隧道的結構參數為依據，當隧道內發生火災時，對隧道煙霧隨時間的發展擴散過程進行了動態的模擬與研究，得出了不同的火災放熱率、發煙率的情況下，控制隧道煙霧迴流的臨界風速這一關鍵數據，為隧道突發火災時的緊急通風控制提供參考。分享友人