熱傳系數 的英文怎麼說

中文拼音 [rèzhuànxìshǔ]
熱傳系數 英文
heat transfer coefficient
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Heat transfer coefficients in a packed bed have been investigated by leva and beck.

    填充床的傳熱系數已由利瓦和貝克作過研究。
  2. High frequency instabilities result in grossly increased convective heat transfer coefficients in the chamber walls.

    高頻不穩定性使室壁對流傳熱系數大大增加。
  3. 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。
  4. Heat transfer calculation and method to select pollution coefficient of membrane economizer

    膜式省煤器的傳熱計算與灰污系數的選取方法
  5. Standard test method for measuring the steady - state thermal transmittance of fenestration systems using hot box methods

    隔熱箱法測定主窗設計系統的穩態熱傳遞系數的標準試驗方法
  6. It has issued residential buildings energy design standard for heating zone hot summer and cool winter zone and hot summer and warm winter zone. for heating zone, the method of effective thermal transmittance based steady heat transfer is used for the energy consume calculation, for hot summer and cool winter zone and hot summer and warm winter zone, the method based dynamic heat transfer must be used for the energy consume calculation

    對居住建築，我國已頒布了包括採暖地區、夏熱冬冷地區、夏熱冬暖地區三個節能設計標準，對北方寒冷地區，用建立在穩態傳熱基礎上的有效傳熱系數法進行能耗計算；對夏熱冬冷地區、夏熱冬暖地區，圍護結構受室外動態溫度和太陽輻射熱的綜合作用，明確應採用動態方法計算圍護結構傳熱。
  7. For a soil or rock of water - lacked, a heat transfer theoretical model is developed, which is a steady or unsteady, the results show that reservoir temperature, thermal diffusion coefficient, inlet temperature, flow rate of and run time of ground source heat pumps have an effect directly on heat transfer process of dhe. it can deduce that intermit running is favorable for this type of soils and rocks

    對于貧含水地下巖土層建立了穩態與非穩態傳熱的理論模型，分析結果表明，巖土層的熱儲溫度、導溫系數、埋地換熱器進水溫度、流量以及地源熱泵系統的運行時間或開停機比，都對埋地換熱器的傳熱過程產生直接影響，可以推斷，對于該類型巖土層的地源熱泵系統，採用間歇運行將是有利的。
  8. Mensuration and analysis of the overall heat transfer coefficient in the weigang - jingmen oil pipeline

    魏荊輸油管道總傳熱系數測定與分析
  9. Total conductivity of heat exchanger of ellipse spiral ophidian coils

    正交橢圓螺旋盤管換熱器的總傳熱系數
  10. The city pantile finish gives the illusion of normality despite a u value of 0. 07 w / ?

    雖然傳熱系數只有0 . 07w / ? ，最後用城市波形瓦使得這棟房子看起來和普通住宅沒什麼區別。
  11. Relaxor ferroelectric single crystals, such as pb ( mg1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pmnt ) or pb ( zn1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pznt ), have been reported to exhibit an extremely large piezoelectric constant and excellent electrostrictive properties. such excellent performance makes it fully substitute the traditional piezoelectric ceramics and points to a revolution in ultrasonic transducers, actuators and micro - positioners, making relaxor - based piezocrystals the most promising materials for a broad range of advanced applications. however, it is difficult to grow the high quality single crystals because of the lack of valid thermodynamic data

    新型弛豫鐵電單晶鈮鎂酸鉛（簡稱pmnt ）或鈮鋅酸鉛（簡稱pznt ）是一類新興的功能材料，其在準同型相界附近具有優于傳統壓電陶瓷的較高的壓電常數和電致伸縮系數，可完全代替傳統的壓電陶瓷作為超聲換能器、致動器、微位移器等，使其成為鐵電領域的研究熱點，但如何生長出滿足應用要求的單晶材料卻一直是一個困擾的問題。
  12. This article aims at the boiler ' s problems in operation : 1 ) under nominal load, the smoke temperature at the outlet of hearth reaches 1200, far more exceeds 1050 the original designed temperature. this will always result in slag inside boiler and the temperature of overheater ' s pipe superheat, so that boiler cannot take nominal load and all these influence boiler ' s nomal operation heavily, 2 ) this article also studied the reason why the assistant oil becoming necessary when coal changes. during the nomal operation, many factors ( makeup of combustor and its disposal, smirch and encrust of water wall, excessive air coefficient, temperature of primary air, coal type and density of coal dust ) can deviate the designed working conditions, then affect the boiler ' s nomal operation

    本文針對該鍋爐在實際運行中存在的問題：在額定負荷下，爐膛出口超溫、低溫段過熱器前煙溫高達936 ，遠遠超過815的設計值；噴燃器四周水冷壁結焦嚴重，過熱器管壁溫度超標，無法帶上額定負荷；甚至有時因燃煤質量的變化，必須投油助燃的嚴重情況進行了分析研究。在實際生產過程中，燃燒器的結構、布置，水冷壁的粘污、結垢，過剩空氣系數、一次風溫、煤種及其濃度變化等許多因素都會偏離鍋爐的設計工況，從而影響爐內的傳熱和燃燒，造成爐膛出口超溫、水冷壁結渣等問題。
  13. The results indicate that the qualitative behavior in this process is similar to that observed in condensation of vapor at or above atmosphere pressure, the coefficient of heat transfer for condensation in tube, the coefficient of heat transfer in total increase with the increasing of heat flux density and vapor pressure. however, heat flux density and vapor pressure have a more significant effect on them

    發現水平管內低壓蒸汽冷凝過程與常壓條件下蒸汽冷凝過程相同，管內冷凝傳熱膜系數、總傳熱系數隨熱流密度、蒸汽壓力的增大而增大，但熱流密度、蒸汽壓力對低壓蒸汽冷凝有著更為顯著的影響，管外冷卻水流量對其影響並不明顯。
  14. The chip of microbridge structure thermocouple type microwave power sensor is designed by using seeback domino offect of thermocouple. ta2n of relatively low resistor - temperature coefficient and si of relatively high thermoelectric power seebeck coefficient are used as thermocouple materials in the chip

    微梁結構熱偶微波功率傳感器晶元就是利用熱偶的塞貝克效應設計的，晶元選擇具有低電阻溫度系數的ta2n和具有高熱電系數的半導體單晶si作為熱偶材料。
  15. We research on the thermal buckling characteristics of double layer membrane which is composed of different materials with different thermal expansion coefficiens under uniform temperature elevation. the energy method is proposed which is used to solve the problem and the symbolic relation between central buckling height and substrate height under small buckling height is also given. it is the primary theory of membrane resonant sensor, which makes the research and development of novel thermal sensor possible

    本文對微機械中熱脹系數不同的材料構成的雙層復合薄板在均勻溫升下的撓曲特性進行了研究，提出了在均勻溫升下雙層薄板熱撓曲求解的能量法，並給出了小撓度下中心撓度與板厚的解析關系，為薄膜諧振式傳感器溫度特性的研究和新型溫度傳感器的設計與開發打下了基礎
  16. In chapter four, in our experiments, we selected four representative mould steels as samples. after laser heat treatment, the hardness of samples was measured by special instrument, microstructure was also photographed to be analyzed carefully. through these experiments, we also debated on the theories which explain the new phenomenon occurring in laser overlapping treatment

    第二章：介紹了工業中的各種激光加工技術和激光加工系統，詳細說明了本實驗所使用的高功率激光加工系統；第三章：詳細敘述了激光淬火的機理和熱傳導數學模型；第四章：通過實驗，分析激光淬火后的模具鋼的硬化帶的硬度分佈及金相組織特性，同時對激光交疊熱處理的特點及形成機理都作了深入的探討。
  17. With the operation conditions, the adsorber, the evaporator, the condenser, the receiver and the throttle are disigned. the adsorber is of the most importance in the adsorption system, so we provide the non - dynamic equilibrium model of active carbon fibre ( acf ) - methanol adsorption refrigeration pair. the numerical simulation is carried out based on the recorded solar radiation data measured in nanjing and daily ambient temperature for the typical clear days. the temperature field, the pressure field, the methanol concentration and the temperature of evacuted tube, and water tube are caculated

    吸附床是吸附製冷系統的核心，本文以活性炭纖維?甲醇為工質對，建立了吸附床非動態平衡吸附傳熱傳質數學模型，以南京夏季典型一天中的輻射強度和環境溫度為條件，模擬計算了吸附床在通水冷卻和自然冷卻兩種狀態下，吸附床內各點壓力、溫度、吸附率、吸附總量及真空管和冷卻水管壁溫隨時間變化關系。
  18. The interactions between heat flux density, vapor pressure, vapor velocity and the coefficient of heat transfer for condensation in tube, the coefficient of heat transfer in total are investigated. the relationships between heat flux density and the total difference in temperature, the difference of temperature, pressure drop of vapor from the entrance of the tube to the exit are investigated as well

    考察了冷卻水流量、溫度恆定條件下熱流密度、蒸汽壓力、蒸汽流速對冷凝傳熱膜系數及總傳熱系數的影響關系，同時考察了總傳熱溫差、蒸汽進出口溫差及壓差隨熱流密度變化的關系。
  19. The study shows that the theoretical models are in good agreement with the experimental results. the correlations mentioned above can facilitate the engineering design

    研究表明，本文理論模型較好的預計了實驗結果，得到的波形管降膜蒸發器傳熱分系數的準數關聯式可以為工程設計提供參考依據。
  20. Analytical relationships are obtained for calculation of the coefficient of heat transfer for condensation in tube, the relative difference between the experimental value and the calculated value is smaller than + 15 %

    關聯出了相應的水平管內冷凝傳熱膜系數的計算式，計算值與實測值的偏差在15以內。
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