過熱器元件 的英文怎麼說
中文拼音 [guòrèqìyuánjiàn]
過熱器元件
英文
superheater element-
Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下: 1 )對翅片管蒸發器結構特點進行分析,選取適當的微元控制體,就干、濕和霜工況下對每個微元分別進行傳熱傳質分析,基於經驗關系式確定霜的有關參數,對于霜工況下的霜生長建立模型,經適當假設,運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型,為系統模擬奠定基礎; 2 )對蒸發在大擾動下的開、停機過程,運用動態集中參數模型進行分析和計算,為更好地描述製冷系統運行的全過程奠定基礎,同時也為製冷系統實現自動控制提供一定的理論基礎; 3 )對蒸發器正常運行過程,運用動態分佈參數和參數間定量耦合的觀點來分析和計算,為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性; 4 )編寫翅片管蒸發器動態特性模擬計算程序,可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場,實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。We select ni / cr alloy resistor as element together with ceramic embedding hearth ; select small flat - and - disc heat - even hubby ceramic sample holder, select ni / cr & ni / si thermoelectric couple ( type k ) as thermoscope with threads 0. 5 mm in diameter which is installed in the middle of the holders symmetrically ; select aluminum silicate fire - retardant fiber as materials for heat preservation ; design some hardware, for example temperature controller & transporter, signal amplifier etc ; design controlling curve to heat stove ; and introduce the method of least squares nonlinear regression and subsection function to deal with data. in order to obtain the reasonable operation conditions and operation curve, we have also done many theory analysis and experiment discussions
通過理論和試驗探討,選用鎳鉻合金電阻絲作為加熱元件,配以陶瓷質埋入式爐膛;選用陶瓷質小尺寸扁平?圓盤均熱塊體型樣品支持器;選用0 . 5mm絲徑鎳鉻?鎳硅熱電偶( k )作為測溫元件;熱電偶對稱安置在樣品支持器容器的中部;選用硅酸鋁耐火纖維作保溫材料;合理選用和設計了溫度控制器、溫度變送器、信號放大電路等硬體;採用升溫曲線來控制爐膛供熱過程;採用最小二乘法非線性回歸與分段函數相結合的曲線模擬方法,進行圖形處理。It is suitable to be used as the medium to filter the high purity and strong corrosive gas or liquid, the air plug of battery, gasket, seals for medium / low pressure, the waveguide tube pre - heater for boiler, the sealing wash, the cover of big - powered micro - wave antenna, and radar antenna of twt etc
適用於過濾、高純度、強腐蝕性的氣體液體介質、蓄電池上作氣塞、襯墊、中低壓密封元件、鍋爐波管預熱器、密封圈和軍用微波大功率天線罩,以及行饋網路雷達天線等。In poor packages, too large stresses are formed, which often results in cracking of chips and delaminating at mounting interfaces
如若封裝不當,會使器件產生過大的熱應力,致使晶元破裂、封裝微裂、漏氣,導致器件失效。Application : temperature control or over heat protection for household appliances and electronic element device
適用范圍:家用電器、電子元器件的溫度控制或過熱保護。Moreover, we give a further discussion on the numerical value calculation of temperature distribution. the main problem when we design the high duty - cycle high power laser diode array we face is the large amount of heat during its operation. so we change the proportion of some ingredients and the concentration of the dopage to gain high quality iii - v material
在激光器陣列的設計過程中,針對大功率激光器嚴重的產熱問題,尤其是高占空比工作時,會有更多的功率轉化為熱的現象,我們改進晶元材料的配比、摻雜,提出適應高占空比工作的器件版圖結構。Besides, scan rate and cycle period also affect the result ; co - deposition of dualistic oxide is a focus of research, as an element in the same group, ir is selected. deposition rate of composition is decreased by the adding of ir composition, and when the proportion of ir exceeded 50 %, composition procession can be ceased. but cooperation of ir and ru oxide can highly increase the specific capacitance of active material ; annealing treatment under a certain temperature can help to change the hydrate ru composition into mixture state ru oxide, accordingly increase the stabilization of active material
研究表明:電解液的配製過程中,氯化釕濃度、溶液ph值、陳化時間、溶液溫度對電鍍效果均有影響,其中溶液ph值是最主要的影響因素;在儀器的使用條件探索中,理論結合實驗確定了本電鍍液體系循環伏安電勢窗的理想范圍,並發現循環伏安掃描速度和掃描周期對電鍍結果也有較大影響;混合氧化物的共沉澱是目前研究熱點,在此選用與釕同一族的銥作為共沉澱元素,銥的加入會阻礙氧化物的沉積速度,銥的比例超過50 %會使沉積作用停止,但是二元氧化物的協同作用使沉積的活性物質比容量大大提高;一定溫度下退火后處理作用會使水合釕化物轉變成混合價態的氧化釕,從而提高活性物質的穩定性。In the end of the dissertation, a tube lifetime evaluation software system is developed with the utility of the finite element analysis stress computation and the metallographic tests. the lifetime of the platen superheater tube is evaluated by the software system
最後,綜合以上應力解析法、有限元應力計算和余相試驗研究開發了管件壽命評估軟體系統,並使用該系統綜合評估了屏式過熱器管段的壽命。In view of the present situation, in this paper, a new moisture analyzer which combines infrared drying oven and electronic balance is proposed takes dsp as the information processing unit. it presents the instrument structure and the hardware design of the system. it actualizes the temperature real time control in the drying equipment through controlling the power of the heater element and taking an complex control method
針對這一現狀,本文提出了一種將紅外乾燥箱和電子天平相結合,利用dsp作為信息處理單元的水分測定儀;給出了儀器結構和dsp系統的硬體電路設計;研究通過對加熱元件的功率控制實現乾燥箱的溫度控制,採用智能復合控制策略對乾燥箱的溫度進行實時控制,乾燥箱的溫度達到105的時間可由單純pid控制的2分鐘減少到1分鐘,且控制精度高。In the selective calculation module, the calculations of heat exchanger design, the analysis of pipe setting patterns are combined with the database so that the selective calculation sub - system is developed. considering the factors such as uniform flowing of the fluid, smaller inner radius of the shell, the well heat exchanging effect and saving materials, the pipe setting module is developed based on the designing data. in the module for automatically generating parts and assembly drawings, the database of pattern sizes and the drawing libraries are established according to the classifications and series
在選型計算模塊中,通過換熱器設計計算、管束組件的布管方式分析、數據庫的檢索,開發了浮頭式換熱器輔助設計計運算元系統;在布管定型模塊中,按照確保殼程流體流動均勻、且換熱器殼體的內徑較小、管程殼程間換熱良好且節省材料的原則,根據設計計算參數建立了自動布管定型系統;在零部件圖和裝配圖自動生成模塊中,分級分類地開發了浮頭式換熱器所有零部件圖和裝配圖的圖紙尺寸數據庫和圖庫,運用「死圖活尺寸」的開發理念,開發了圖形自動生成與管束參數化設計的集成系統。Thermal and welding residual stress often produces in the proceeding of the electronic package, the residual stress release and thermal deformations of the microelectronics will reduce the assemble intensity between the chip and package, and then debase the electrical performance of the assemble circuit, numerous thermal cycling will lead to thermal fatigue or thermal failure of the microelectronics
電子封裝器件在生產的工藝過程中,往往會產生熱殘余應力以及焊接殘余應力,殘余應力的釋放作用及器件在使用過程中的熱變形,會降低集成電路晶元與封裝體的結合強度,進而降低集成電路的電性能,反復的熱循環,將導致器件的熱疲勞失效,嚴重時可導致矽片或陶瓷片破裂,使整個器件遭到破壞。A high - voltage fuse is a circuit element put there artificially and designed to melt itself when the fault current exceeds some limit, thereby the circuit could be cut off and the electrical equipment could be protected
高壓熔斷器俗稱高壓保險絲,是在電網中人為設置的一種最薄弱的發熱元件,是一種當電力系統發生過載或短路故障時,電路或電氣設備的保護元件。The immersion electrical heater is chiefly applied in the direct contact mode of fluid heating. it features fast heat exchange and high thermal efficiency. it has the varieties of water heater, oil heater and gas heater. its heating element power density, i. e. the power per unit of heating area of the heating element, is an important parameter of the electrical heating element, which has a direct bearing on the performance and working life. the working out of the value is a highly specialized problem, being under the influence of many factors ( media flow rate, tempt, physical and chemical properties and direction in which the medium flows past the element etc )
浸入式電加熱器主要用於直接對流體接觸加熱的場合,具有熱交換快,熱效率高等特點,分為水用加熱器、油用加熱器、氣體用加熱器,加熱元件的功率密度:即電加熱元件單位發熱面積上的功率,它是電加熱元件極重要的參數,直接影響加熱器的使用性能及使用壽命,它的取值是一個非常專業的問題,受到許多因素的影響(如介質的流速、溫度、物理和化學性質及介質流過加熱元件的方向等等) 。In order to avoid the shell cracking during baking process of quick investment casting based on stereolithography ( sl ) pattern, an expanding model of sl pattern - ceramic shell is proposed via analyzing the interaction between investment shell and sl pattern, then the cracking condition of investment shell is given
摘要為了解決快速熔模鑄造中型殼開裂問題,對樹脂模型與型殼材料在消失過程中的熱變形機理和型殼開裂條件進行了有限元分析,建立了原型型殼熱變形數學模型,並應用於新型燃氣渦輪導向器的快速鑄造。With the aid of an integrated cooling element, the sensors can be supplied with medium temperatures of up to 150c
通過集成的散熱元件,傳感器的測量介質溫度可達150cThis water heater is equipped with a high limit control switch that is designed to shut off the power to the elements if the water temperature exceeds170 f ( 77 c )
本熱水器配置高溫限制控制開關,用於當熱水器水溫超過77 c時,關閉通向加熱元件的電源。The break was assumed to be a single tube double - ended and three - tube double - ended shear break. the diameter of the break orifice is 0. 876mm and 1. 518mm respectively. the characteristic responses of main thermal - hydraulic parameters, such as primary pressure, secondary pressure, break flow rate, pressurizer level, secondary side level of steam generator and so on, were presented in this thesis
試驗再現了核電廠蒸汽發生器單根傳熱管雙端斷裂事故和三根傳熱管雙端斷裂事故發生后的熱工水力現象,給出了事故過程中一次系統壓力、二次系統壓力、破口流量、蒸汽發生器二次側水位、穩壓器水位、元件表面溫度等主要參數的瞬態響應。In order to study the regeneration mechanism of dpf in detail, we still need a mathematical model of the channel unit, which present temperature field and the soot reaction rate of the channel. finally, it points out the influences of various factors to the regeneration process by computing the numerical solution of model under different boundary conditions and geometry parameters, such as the initial temperature, the gas flow rate, the oxygen concentration, the sediment quantity and the wall thickness of the filters, and so on. in this way, the paper provides theoretical guidance for optimization design of the dpf
首先研究了干凈壁流式過濾體的加熱特性,然後在加熱和燃燒理論的基礎上建立了微粒捕集器再生過程的數學模型,並對模型進行了數值計算,得到了捕集器內部的三維溫度場分佈以及溫度梯度分佈,結果與實驗值吻合較好,驗證了模型的正確性;為了詳細的研究微粒捕集器的再生機理,建立了孔道單元數學模型,得到了孔道內的溫度場分佈和微粒反應速率分佈;最後,通過求解模型在不同邊界條件和不同幾何參數下的數值解,分析了各種因素對再生過程的影響,如過濾體初始溫度、過濾體內氣流的流動速率、氧濃度、微粒沉積量以及過濾體壁面厚度,為微粒捕集器的優化設計提供理論指導。By introduction to structure analysis and design calculation of middle pressure tubular waste heat boiler with expansion joint, the author thinks rational selection to the standard and code of the boiler and vessel is the key to assure the product design and manufacture quality and guarantee personal safety without the special national standard " tubular waste heat boiler " now
摘要通過介紹一臺6t / h 、帶膨脹節的中壓管殼式余熱鍋爐的結構分析和設計計算過程,認為在目前國內尚沒有專門的《管殼式余熱鍋爐》標準情況下,合理選用各受壓元件所對應的鍋爐、壓力容器標準規范,是確保該類產品設計製造質量和保障人身安全的關鍵。Heat exchangers - test procedures for establishing the performance of forced convection unit air coolers for refrigeration
熱交換器.製冷用強制對流元件空氣冷卻器的性能確定試驗過程分享友人