air-pressure drop 中文意思是什麼

air-pressure drop 解釋
空氣壓降
  • air : n 1 空氣，大氣。2 天空，空中。3 微風，和風。4 態度，樣子，風度，氣派；〈pl 〉高傲的架子。5 傳播，...
  • 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...
  1. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  2. 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。
  3. Special planes called " hurricane hunters " fly directly into these monster storms and drop sensors to measure wind speed, temperature and air pressure, providing vital clues to the hurricane ' s direction

    一種名為「颶風獵人」的特殊飛機可直接飛進這些風暴怪物內，投放傳感器來測量風速、溫度和氣壓，提供有關颶風路徑的關鍵信息。
  4. Air pressure drop and heat transfer performance for the automotive radiator

    管帶式汽車散熱器流動阻力與傳熱性能分析
  5. All the transmission lines of west - east electricity transmitting project are inevitable to crossing the high altitude and icing areas. for the reducing of the air pressure and the absolute humidity, the electricity strength of insulators will drop obviously. therefore, it must be considered the effect on the insulators " flashover voltage caused by the change of altitude and ice when the insulation cooperation of transmission lines are being designed

    「西電東送」工程的所有輸電線路都不可避免的要經過高海拔和覆冰地區，由於大氣壓力和絕對濕度的降低會使絕緣子的電氣強度顯著下降，因此在進行輸電線路的絕緣配合設計時必須考慮到海拔高度和覆冰的變化對絕緣子的閃絡電壓影響。
  6. Later, the paper ascertains how the prominent factors influence the humidifying effect by single factor experiment and got such solutions : when other situations do n ' t change, the nozzle flux will enhance with the increase of the nozzle aperture and spraying pressure. air ' s changing quantity of enthalpy and absolute humid, valid humidified quantity, humidifying efficiency and saturation efficiency will enhance with the increase of the initial water temperature. with the enhance of the praying pressure, the valid humidified quantity and air ' s changing quantity of enthalpy will increase first and decrease later, while the humidifying efficiency will drop

    然後通過單因素試驗確定影響顯著的因素如何作用加濕效果，得到：在其他條件不變的情況下，噴嘴流量隨噴嘴孔徑和噴水壓力的升高而增大，空氣焓變量、絕對濕度差、有效加濕量、加濕效率及飽和效率隨噴水初溫的升高而提高，有效加濕量和空氣焓變量隨噴水壓力的升高先增加然後有所下降，而加濕效率隨噴水壓力的升高而下降，焓變量和絕對濕度差隨水氣比的增加而增大。
  7. The performances such as air flow, airside pressure drop, waterside heat exchange and power consumed by compressor vs. frosting time under different condition, were simulated and analyzed by using the ashpwch model developed

    採用該模型對機組在不同工況下的性能進行了模擬分析，得到了風量、空氣側壓降以及水側換熱器換熱量、壓縮機的軸功率等隨結霜時間的變化。
  8. When in experiment, the air was heated by the film heater installed on the above and below surface of channel, adopting various air velocity of flow, test import ' s and export ' s temperature, wall temperature, fluid flux and the drop of pressure, and the other parameter. adopting nu and nu0 to analyze the baffle ' s situation of heat transfer and fluid flow, which baffle was holed various diameters

    實驗時，通過矩形通道上下壁面敷設的電加熱膜加熱通道空氣，改變空氣流速，測試不同工況時的進出口溫度、壁面溫度、流體流量和壓力損失等參數，並採用無量綱努謝爾特準則數nu 、 nu _ 0等分析了設置不同開孔折流板的換熱與流動情況。
  9. Influence of cooling water pressure drop on the energy saving reform of air conditioning unit

    冷卻水壓差在空調機組節能改造中的作用
  10. The research results show that the counter - flow condensers have a better performance than that of other arrangements in single - circuit condensers, and that branch flow should be adopted in multi - rows condensers to decrease the pressure drop and increase the heat transfer capacity, and that the influence of gravity force can not be ignored, and that there must be an optimum refrigerant mass flow which can make the condenser perform best when the air velocity is constant while there must be an optimum air flow which can make the condenser perform best when the refrigerant mass flow is constant

    研究結果表明，單迴路冷凝器中，逆流布置換熱效果最好，叉流其次，順流最差；多排管冷凝器應盡可能採用分流方式，以減小壓降，增強換熱；布置冷凝器流程時，重力的影響不可忽略；當風量不變時，必然存在一最佳製冷劑流量使冷凝器性能達到最佳；當製冷劑流量保持不變時，也相應存在一個最佳風量使冷凝器性能最佳。
  11. Air flow disperses even, held - up time is long, and pressure drop rate is low, so it can be applicated into heating systems

    ~氣流分散均勻，滯留時間長，壓降低，可應用於加熱系統中。
  12. Heat transfer and pressure drop investigation of plate heat exc hanger as inter - stage cooler of air compressor

    板式換熱器作為壓縮機冷卻器時的傳熱和流阻性能
  13. Ground - loop heat exchanger is an important part of the gshp air - conditioning system and deferent from other traditional air - conditioning systems. this paper gave detailed designing method of ground - loop heat exchanger, including load calculation, pipe layout, choice of tubes and its material, antifreeze method, calculation of pressure drop, etc. taken the gshp air - conditioning system in the report room of shandong institute of architecture and engineering as an example, its design was analyzed and the optimization design of ground - loop heat exchanger was proposed

    地熱換熱器是地源熱泵空調系統中室外部分的重點和核心設備，也是地源熱泵空調系統在結構上不同於傳統空調系統的特殊之處，本文詳細闡述了地熱換熱器的設計步驟；分析了地熱換熱器的傳熱性能及設計計算；以山東建築工程學院學術報告廳的地源熱泵系統為例進行了優化設計分析研究。
  14. The simulation results indicated that the air flow, airside pressure drop, water flow and flux of heat exchange in water side decreased with the increase of frosting time, and the airside pressure increased

    模擬結果表明，隨著結霜量的增加，空氣側換熱器的換熱量減小，風量也將逐漸減小，而阻力卻迅速增加；水側換熱器的換熱量減小，水流量也減小。
  15. According to the data from experiment, the semi - empirical formula computing pressure drop of wire packing rotating packed bed absorber in air independent propulsion ( aip ) system is established by regression analysis

    利用實驗數據進行回歸分析，得到了計算絲網填料旋轉床吸收器氣相壓力降的半經驗公式。
  16. The maximum pressure drop and the operational pressure drop were investigated in a rectangular spouted bed with double nozzles by using air as spouting fluid

    摘要在雙噴嘴矩形噴動床內，以空氣為噴動氣體，研究了最大噴動壓降與操作壓降的變化規律和影響因素。
  17. Polymeric materials, cellular flexible - method of assessment of air flow value at constant pressure - drop

    軟質泡沫聚合材料.恆定壓降下的空氣流量評估法
  18. Polymeric materials, cellular flexible - method of assessment of air flow value at constant pressure - drop iso 7231 : 1984 ; german version en iso 7231 : 1997

    軟質泡沫聚合材料.恆定壓降下的空氣流量評估方法
  19. The characteristics of pressure drop of wire packing rotating packed bed absorber in air independent propulsion ( aip ) system are analyzed under counter - current condition and the model of pressure drop is built

    摘要對不依賴空氣動力裝置（ aip ）系統不銹鋼波紋絲網填料旋轉床吸收器在氣液兩相逆流條件下的氣相壓力降特性進行了分析，建立了壓力降預報理論模型。
  20. Polymeric materials, cellular flexible. method of assessment of air flow value at constant pressure - drop

    多孔柔軟聚合材料.在連續壓降下空氣流量值評估的測定
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