絕熱效率 的英文怎麼說
中文拼音 [juérèxiàolǜ]
絕熱效率
英文
adiabatic efficiency-
The temperature rise at the center of a massive concrete wall is calculated by using the adiabatic rise of temperature and heat conduction equations of concrete based on the equivalent time, and considering effects of temperature on the hydration heat reaction ratio and creep characteristics of early - age concrete
摘要基於等效時間的混凝土絕熱溫升、熱傳導方程,考慮溫度對早期混凝土水化熱化學反應速率和徐變特性的影響,計算了大體積混凝土墻中心的溫升。Bare copper flat wire technology is adopted for wire package, with h class insulant as bedding to realize functions like : quick heat dissipation, high efficiency and long working life
線包採用絲包銅扁線技術工藝,用h級絕緣材料墊層,散熱快、效率高、壽命長。" automatic reset n. c. series connected thermal overload protection, two moisture sensing probes, prelubricated shaft bearings and class f insulation. * efficiencies include all mechanical losses including mechanical seals.
自動重置n . c .系列,連接過熱保護裝置,兩個潮氣檢測探頭,預潤滑軸承和f級絕緣。 *效率包括所有機械密封中的機械損失。The equation including the nonlinear dispersion, i. e. the modified nonlinear schrodinger ( mnls ) equation, is a better model. in this thesis, we take mnls solitons as a model for femtosecond soltions. then based on the recently developed direct perturbation theory for perturbed mnls equation, we study the raman self - frequency shift of femtosecond solitons and its suppression by the means of frequency filters. for this purpose, first, we define the physical parameters of mnls solitons ; next, through the direct perturbation theory for perturbed mnls equation, under adiabatic approximation, we obtain the evolving parameters of mnls soliton on our questions and then choose the parameters of frequency filters based on it ; at last, we directly numerically simulated our questions by split - step fourier ( ssf ) method after improving the arithmetic of the differentiation of the nonlinear item for satisfying mnls equation
本論文以mnls孤子作為光纖飛秒孤子的模型,通過新近建立的mnls孤子直接微擾理論,研究光纖中由拉曼效應引起的飛秒孤子在傳輸中的自頻移,以及通過頻率濾波對自頻移的抑制。為此,首先給出描述mnls孤子的各物理量,然後用mnls孤子直接微擾理論,解析地得到這些問題絕熱近似下的孤子參數演化,並由此選擇頻率濾波的參數,最後用分步傅里葉方法,在對非線性項微商的演算法做出了適合於mnls孤子的改善後,對拉曼效應及頻率濾波進行了直接數值模擬,其中頻率濾波參數用微擾理論確定。Brake thermal efficiency
制動熱效率絕對有效效率Scroll compressor, used as main engine in auto aircondition system, has small volume, light weight, low noise, low vibration, good seal, high volume efficiency and high heat insulation efficiency
渦旋壓縮機是汽車空調器的製冷主機,具有體積小、重量輕、低噪聲、低振動、密封好、容積效率和絕熱效率高等優點。The simulations results show that the spoiler is available to make the fuel and the oxidizer coming from the former to stay in the cavity for a long time, to let the fuel and oxidizer mix and burn completely. since there is a high temperature zone forming by vortex in the middle of the motor, it required a restricted thermal protection. the plate with holes decreased the vortex function in the cavity, which could not promote the combustion efficiency, but to decrease temperature in the cavity and be benefit to thermal protection of the wall
計算結果分析表明:擾流板可以使燃料和氧化劑在擾流腔內的滯留時間加長,促進燃料與氧化劑的摻混燃燒,提高燃燒效率,但由於渦流在發動機的中間部位形成了高溫燃燒區域,致使局部燃料和絕熱層燒蝕速率增大,加大了熱防護的難度;孔板結構減弱了擾流腔內迴流區的漩流作用,不能增加推進劑燃燒效率,但可以使擾流腔內的溫度降低,給壁面熱防護帶來好處。The experimental results show that adiabatic efficiency has a remarkable improvement in low cold mass flow ratios, adiabatic efficiency can improve by 30 % in the best condition
實驗表明,在冷流率小的情況下,通過加濕可以使得絕熱效率得到顯著的提高,最好可以提高30 。Power plants converse elementary energy into electric power most of which are coal - burned power plants with a efficiency from 25 percent to 40 percent because of technology limit. as competition mechanism has been introduced into electric market and the identity of electric production, cost competition become the essential competition in electric market at present
發電廠是將一次能源轉換成二次能源的企業,在我國,絕大多數電能是由火電廠生產的,總體能耗成本十分高,受熱機技術的限制,燃料的化學能轉換成電能的效率不高,僅在25 ? 40之間。Combining burning and heat exchange as a whole, this furnace adopts the novel indirect heating technology of performing heat exchange at high temperature position of the furnace, inside which, smoke and air flow separately, heating has no contamination, thermal efficient reaches 60 - 75 %, therefore, it features speedy temperature rise, compact dimension, convenient installation, reliable operation and lower cost ( only half of that by boiler heating system )
該爐集燃燒與換熱為一體以爐體高溫部分進行換熱的最新間接加熱技術,煙和空氣各行其道,加熱絕對無污染,熱效率高達60 - 75 % ,升溫快,體積小,安裝方便,使用可靠且價格低,與一噸鍋爐相比,該加熱系統只相當于鍋爐加熱系統價格的一半。This paper gives an example that is a project about repowering 2 50mw coal - fired plant as combined cycle. it is found out that after full firing repowering, the absolute efficiency gain is 4. 62 % and after feed water heating repowering, the absolute efficiency gain is 2. 78 %
本文結合2 50mw燃煤機組改造為聯合循環的方案實例,計算出排氣助燃型聯合循環系統更新改造使原燃煤機組絕對效率提高了4 . 62 % ,給水加熱型聯合循環系統更新改造使原燃煤機組絕對效率提高了2 . 78 % 。The work mainly consists of four parts : the first part is to use oxidation and lpcvd technique to produce sio2 mask film and si3n4 insulation film in order to enhance the heating efficiency of micro chamber, and guarantee the carry out of the reaction. the second part is to use the combination of dry etching and wet etching to produce reaction micro chamber, it is the container which carry out the pcr reaction, and dna sample carry out amplification reaction here. the third part is to use the sputtering, photolithography to produce heaters and temperature sensors which heat the reaction micro chamber and provide the temperature condition for the pcr reaction
首先,利用氧化工藝和lpcvd技術,生長sio _ 2掩膜層和si _ 3n _ 4絕緣層,以提高反應腔的熱效率,保證擴增反應的順利進行;其次,用濕法腐蝕和干法刻蝕相結合的方法加工微型腔體,使之作為dna樣品進行pcr擴增反應的容器;第三,用濺射、光刻等工藝在微型腔體底部製作微型加熱器和溫度傳感器,實現對反應腔體的加熱及其溫度的精確測量,提供pcr擴增反應所需的溫度條件。分享友人