pressure-drop coefficient 中文意思是什麼

pressure-drop coefficient 解釋
壓降系數
  • pressure : n 1 壓；按；擠；榨。2 【物理學】壓力，壓強；大氣壓力；電壓。3 精神壓力，政治[經濟、輿論等]壓力。4...
  • drop : n 1 滴；液滴，水滴。2 〈pl 〉 【藥學】滴劑；滴眼藥。3 微量，點滴；一口[杯]酒。4 滴狀物；耳墜；水...
  • 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. And experimental study on the heat transfer performance and pressure drop characteristic of the process of bubbling evaporative cooling are carried. as there are so little attention and studies on the process bubbling evaporative cooling about heat transfer in the world at present, this paper mainly deals with the effects of the different bare tower velocity, weir height, heat flux density and plate perforation geometries on the heat transfer coefficient and the pressure drop of the process of air flowing

    由於目前國內外對鼓泡蒸發冷卻過程在換熱方面的關注和研究較少，本文對不同空塔速度、不同堰高、不同熱流密度、多孔板的不同幾何尺寸對換熱系數及空氣流動過程阻力的影響進行了實驗研究及理論分析，總結了本實驗條件下換熱及阻力的實驗關聯式。
  2. Using the system designed in this thesis work, flow field calibration of the wind tunnel is accomplished, which covers dynamic pressure drop coefficient, dynamic pressure time stability, axial static pressure gradient, boundary layer, and degree of turbulence, etc. boundary layer measuring principle and method are especially described in detail, the relationship between boundary layer thickness, wind speed setting, and the depth of the experimental section is summarized, and finally the calibration data for th e model center zone under specific wind speed are given

    然後利用本文設計的系統完成了落差系數、動壓時間穩定姓、軸向靜壓梯度、邊界層及湍流度等內容的流場校測。特別對邊界層測量的原理及方法做了較詳盡的敘述，總結出邊界層厚度與設定風速、實驗段深度的關系，然後給出模型中心區一定風速下校正數值。
  3. With the increasing of weir height, the pressure drop increases. and it is independent of bare tower velocity and plate dimension. the correlation before was corrected as follows : pl 3911z this paper analyzed the heat transfer coefficient between the outer wall of heat tubes and cooling water

    堰高越高，換熱系數越大；在鼓泡范圍內，空塔速度越大，換熱系數越大；在本實驗條件下，熱流密度在10kw / m2附近換熱系數達到最大值。
  4. The results showed that the total heat transfer coefficient of petal - shaped finned tube oil - cooler with helical baffles was 4 ~ 5 times as large as that of smooth tube oil - cooler with segmental baffles at the same oil pressure drop

    結果表明，在相同油壓降下，螺旋隔板花瓣管油冷卻器的總傳熱系數是弓形隔板光滑管油冷卻器的4 ~ 5倍。
  5. The study shows that rock stress sensitivity has the following characteristics : rock property has little sensitivity to stress, of which porosity has the least, permeability less, and compression coefficient most ; the rock property decreases with formation pressure decrease ; in the same formation pressure drop, decrease amplitude of the rock property is not a continuous function of permeability but related to distribution scope of permeability

    研究得出，巖石的應力敏感性特徵主要有：巖石物性對應力的敏感性總體上不大，其中以孔隙度最小，滲透率次之，壓縮系數最大；巖石物性隨地層壓力的下降而下降；在同一地層壓降下，巖石物性下降幅度不是滲透率的連續函數，而是與滲透率分佈范圍有關，高滲透率范圍，巖石物性下降幅度小，低滲透率范圍，巖石物性下降幅度大。
  6. The relationship of the heat transfer coefficient with tea liquid concentration, heat transfer different temperature, vapor temperature, liquid flow rate, particle volume percent and different particle were studied. and analyzed the effect of liquid flow rate, particle volume percent on pressure drop. based on the character of inert particle fluidized bed evaporator, used the theorem, a mathematical model of inert particle fluidized bed evaporator heat transfer was proposed

    設計和建立了惰性粒子流化床蒸發實驗裝置，進行了傳熱性能和流體力學的理論分析和實驗研究；研究了物料濃度c _ e 、傳熱溫差t 、蒸發溫度t _ v 、液體流量i 、惰性粒子體積分率_ s等操作參數對流化床蒸發器傳熱性能的影響，文中還分析了液體流量i 、惰性粒子體積分率_ s等參數對床層壓力降的影響。
  7. Based on a lot of experimental data, the empirical correlations of single - phase heat transfer coefficient, condensation heat transfer coefficient and pressure drop factors are given

    根據大量實驗數據，得到了計算對流換熱系數、冷凝換熱系數及阻力系數的經驗關聯式。
  8. 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。
  9. Experimental investigation on condensation heat transfer coefficient and pressure drop in high performance heat transfer tube

    高效傳熱管內凝結換熱性能及阻力性能的實驗研究
  10. A model was put forward and the theoretic value that calculated with it accorded with the experimental value well. at the same time, we also studied the pressure drop of the bed and the status of preventing and cleaning fouls. the results show that the heat transfer coefficient of vapor - liquid - solid three - phase circulating fluidized bed evaporator is 1. 5 times of the vapor - liquid two - phase evaporator ' s

    實驗結果表明，汽-液-固三相循環流化床蒸發器具有良好的傳熱性能，其傳熱系數是汽液兩相流蒸發器傳熱系數的1 . 5倍左右；惰性固體粒子具有良好的防、除垢效果，解決了設備的在線清洗問題。
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