heat transfer film coefficient 中文意思是什麼

heat transfer film coefficient 解釋
傳熱膜系數
  • heat : n 1 熱；熱力；熱度；熱量。2 體溫；發燒。3 （氣候的）高溫，暑氣。4 【冶金】熔煉的爐次；裝爐量；一...
  • transfer : n 1 移轉，轉送；調職；調任[轉學]證書；變換。2 （財產；權利等的）轉讓，讓與（證書），移轉，授受；...
  • film : n 1 薄層，薄膜；薄霧，輕煙；細絲狀的東西。2 【攝影】感光乳劑，照相軟片，電影膠片；影片。3 〈 pl ...
  • coefficient : adj. 共同作用的。n. 1. 共同作用；協同因素。2. 【數，物】系數，率；程度。
  1. Jet impingement cooling is an advantage method in heat transfer enhancement owing to its extremely high local heat transfer coefficient and simple structure. as regard as the combustor flame tube cooling structure is concerned, the impingement - converse convection - film composite cooling is an effective method, in this composite cooling structure, the impingement cooling problem could be modeled as impingement inside semi - confined channel

    對于沖擊-逆向對流-氣膜復合冷卻的火焰筒結構而言，火焰筒壁面冷氣側的沖擊冷卻實質上是半封閉通道的沖擊冷卻，即沖擊射流從沖擊孔板噴出，沖擊到換熱靶面后形成壁面射流沿通道單方向流出。
  2. The effects of blow ratio and rows on film cooling effectiveness and heat transfer coefficient was studied

    研究了吹風比、孔排等因素對氣膜冷卻效果和換熱系數的影響。
  3. Film heat transfer coefficient

    膜傳熱系數
  4. To solve the mathematic equations, the method based on condensation degree was used. the distributions of temperature, concentration and mass flux on the film surface ; of temperature and concentration in the vapor ; of heat transfer coefficient in the vapor and in the liquid were obtained by applying the model in the flow field

    採用冷凝度的方法對該數學模型進行求解，得出了汽相的濃度分佈和溫度分佈，界面處濃度分佈、溫度分佈和傳質速率分佈，以及汽相和液相的傳熱系數分佈。
  5. Exerting the model of two mechanism heat transfer, the formulation for heat transfer coefficient of liquid film which in smooth tube and equipped with spring inserts is given in this paper. heat transfer coefficient is presented which not only has relation to reynolds number, temperature difference, liquid characteristic, but also is greatly influenced by structure parameter of the spring inserts. experiments indicate the heat transfer coefficient of tubes equipped with spring inserts is 25 % higher than smooth tube

    實驗表明，傳熱系數和液膜雷諾數、傳熱溫差、料液物性參數利彈簧插入物的結構參數有關，實驗條件下，安裝有彈簧插入物的豎管降膜蒸發液膜側的傳熱系數比光管的傳熱系數可高達25左右，但某些結構參數的彈簧插入物會造成傳熱的惡化。
  6. On the basis of heat transfer theory, this paper analyzes heat transfer process in film boiling stage when axial workpiece is quenched vertically and distribution of steam film thickness as well as corresponding variation of heat - transfer coefficient

    摘要以傳熱學理論為基礎，對軸類工件豎直淬火時膜沸騰階段的傳熱情況進行分析，分析了工件表面蒸汽膜厚度的分佈情況和傳熱系數的相應變化。
  7. Based on the j c chen double mechanisms superposition model, the experimental formula of the heat transfer coefficient on the evaporation side in the smooth tube was obtained. considering the influence of spring to the falling film, the formula of heat transfer coefficient on the evaporation side in the vertical tube with spring inserts was obtained. the predicated heat transfer coefficient through this two formulas was finely accord with the experimental result, and the error was basically under 10 %

    在jcchen雙機理加和模型的基礎上，得出了光管降膜蒸發側傳熱系數的實驗關聯式，並考慮了螺旋線對降落液膜的影響，得出了管內插入螺旋線的降膜蒸發側傳熱系數關聯式，這兩個關聯式預測的傳熱系數與實驗值吻合良好，誤差基本在10以內。
  8. The influence of difference in temperature, reynolds number of film, vacuum degree and spring parameter to the heat transfer capability on the evaporation side was studied through the uniform wall temperature experiment, by the result, the heat transfer coefficient on the evaporation side can be improved by inserting spring with proper parameter. when the reynolds number was between 4000 and 14000, and the heat transfer coefficient can be improved nearly 30 percents by inserting the fifth spring when the reynolds number nearly was 12000

    採用8種參數的螺旋線，通過恆壁溫實驗探討了傳熱溫差、雷諾數、真空度和螺旋線參數對蒸發側傳熱性能的影響，結果表明，插入參數合適的螺旋線，在雷諾數為4000 14000范圍內可以提高蒸發側傳熱系數，在雷諾數為12000左右時，加入5號螺旋線可以使蒸發側傳熱性能提高30左右。
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