膜傳熱系數 的英文怎麼說
中文拼音 [mózhuànrèxìshǔ]
膜傳熱系數
英文
film coefficient of heat transfer-
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Finally, by studying the heat transfer coefficient and the mechanism of mass transfer through the membrane pores, a complete mathematical model was proposed for the removal of voc from dilute aqueous solutions by vmd
根據對傳熱系數和膜孔內傳質機理的研究,最後得到了真空膜蒸餾脫除水溶液中voc全過程的數學模型。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。A new method to determine heat transfer coefficient in membrane distillation process
一種測定膜蒸餾過程傳熱系數的新方法Due to good chemical stability and electrical resistivity, high thermal conductivity and mechanical intensity, wide band gap and low thermal expansion coefficient, aln thin films can be applied for insulating chips for semiconductor devices with high power, thermal dissipation lagers for large and super - large scale integrated circuits, insulating layers or passivation layers for semiconductor
超薄鋁膜由於其特殊的的光學性質,在光學多層膜上有廣泛應用。氮化鋁薄膜化學穩定性高、熱傳導率高、機械強度高、電絕緣性能佳、高能隙、熱膨脹系數低,光學特性優良,可以用作大功率的紫外光學器件的散熱材料。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The membrane properties were found to be dependent upon the content of styrene. the membrane physic - chemical properties compare to nafion 117 except that their chemical stability has to be further improved to make them acceptable for practical use in the proton exchange membrane fuel cell. the proton transport through the membrane follows the " liquid - like " proton conductivity mechanism y and the water balance is important for the working condition of the fuel cell
對磺化膜的研究分析表明:膜的性能參數如離子交換容量、吸水率、水合系數、形體穩定性、導電性能、化學與熱穩定性等依賴于膜中苯乙烯含量,且接枝苯乙烯相互間的位阻效應對膜性能影響很大;膜的性能可與nafion膜相比較;質子在膜中的傳導遵循「似液體」質子傳導機理;電滲析與擴散作用使膜保持水平衡。On the basis of above theoretical derivation and analysis on experimental results, by correlating solvent ( water ) transfer with solute ( salt ) transfer on hot side and correlating mass transfer with heat transfer during vmd and introducing a contribution coefficient which can reflect the characteristics of mass transfer through membrane, a new model of mixed flow is presented
在上述理論推導及實驗分析的基礎上,本文將熱側溶劑傳輸與溶質傳輸、膜蒸餾過程熱量傳輸與質量傳輸相關聯,並引入一個能夠反映膜內質量傳輸特徵的「貢獻系數」 ,將努森流模型與粘性流模型結合起來,從而提出了新的混合流模型。Film heat transfer coefficient
膜傳熱系數The design model of seawater desalination with the tvc falling - film evaporation process was deduced. the transfer coefficient of falling - film evaporation process was analyzed in detail. and the effect of the parameter change of process steam to the operation of the device was calculated and discussed
本文主要開展tvc壓縮蒸餾海水淡化技術研究,建立了tvc壓縮噴淋降膜蒸餾海水淡化裝置的設計模型,對降膜蒸發過程的傳熱系數進行了詳細的分析,並對工作蒸汽參數變化對裝置運行的影響進行了分析計算。Gloss. color. tensile strength. yield tensile strength flexural rigidity. flexural. elasticity. lmpact resistance. coating thichness. coating hardness. adhesion lmpact. abrasion. chemical resistance. cosfficicent of linear. thermal expan - sion thermal transmission properties. hdt
光澤.顏色.拉伸強度.屈服抗拉強度.彎曲強度.彎曲模量.抗沖擊性.塗膜厚度.硬度.附著力.耐沖擊.耐磨耗性.耐化學性.熱膨脹系數.熱傳導系數.熱變形溫度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。The finite element model of the thermal conductive equation and the thermo - elastic equation in the system consisting of a transparent coating and a opaque substrate is established based on the analysis of the stability of solution and two important parameters, meshing size and time step
摘要在分析了網格大小和時間步長這兩個重要參數和求解穩定性的基礎上,採用有限元方法建立了透明薄膜基底系統的熱傳導方程和熱彈性方程的有限元模型。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。Taking into account thermal and non - newtonian effects of the lubricant, this paper has theoretically investigated elastohydrodynamic lubrication of involute spur gears, and achieved the pressure distribution, film shape, temperature distribution and the values of the friction coefficient and its varying law along the line of action of gear transmission
本文在考慮了潤滑劑的熱效應和非牛頓效應后,對漸開線直齒輪的彈流潤滑問題進行了理論研究,獲得了齒輪傳動的壓力分佈、溫度分佈、油膜形狀和齒面摩擦系數的取值范圍及其沿齒輪傳動嚙合線的分佈規律。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。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。Measurement of convective heat transfer coefficient by vacuum membrane distillation
用減壓膜蒸餾測定對流傳熱系數的研究Film cooling of the surface of a gas turbine blade was studied in a large - scale low - speed opening wind tunnel according to actual requirement of the design of aero - engine. the surface of a gas turbine blade was cooled by cylindrical holes in the experiment, with the hole number of fifteen in stator and eight in rotor
應航空發動機設計的要求,在大尺寸低速葉柵傳熱風洞中分別對發動機渦輪導向葉片和動葉表面的氣膜冷卻特性進行了研究,具體研究在不同氣膜孔出流時,在不同主流雷諾數和吹風比情況下葉片表面局部換熱系數的分佈規律。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。分享友人