water pressure drop 中文意思是什麼

water pressure drop 解釋
水壓降
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  • 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. Experiment on the pressure drop of crude oil - water pipe flow

    水管流壓降規律實驗
  2. 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。
  3. 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。
  4. Key issues including water plugging types, waterproof board spreading methods, drop of external water pressure and lining design for resisting hydraulic pressure, etc. were studied, thus the composite waterproof and drainage system to control drainage were put forward, including grouting sphere for water plugging, primary support, grid sysytem for waterproof and drainage and lining to resist hydraulic pressure

    重點就堵水方式、防水板鋪掛形式、外水壓力的折減以及抗水壓襯砌設計等技術問題進行了研究，提出了可通過注漿堵水圈、初期支護、防排水網格和抗水壓襯砌形成綜合防排水體系，它可以達到控制排放的目的。
  5. Because the operation in water hydraulic valves is controlled by flow fluid and the pressure drop results from energy loss of flow fluid past valve channel, the flow state of fluid in valves becomes the most important factor for the operational property of valves

    由於水壓閥是通過控制流體流動來操作系統的，閥的壓降也來自於流體流經閥道時的能量損失，因此閥內的流體流動狀態就成為決定閥操作性能最為重要的因素。
  6. 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
  7. 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。
  8. Combined the real testing data, the paper developed a calculation program of water wall temperature and pressure drop for designed supercritical pressure cfb boiler with vertical water walls. the hydrodynamic calculation and safety checkout under five loads was carried out

    結合實際運行的循環流化床鍋爐的熱態測試數據，開發了垂直水冷壁壁溫及水動力計算程序，根據爐膛熱負荷分佈規律，建立了膜式水冷壁熱流密度分佈函數。
  9. 3. testing all the hydraulic parameters of the sprinkler installed with adjuster such as working pressure, water flux, the range of the sprinkler, intensity of water drop impact, characteristic of water distribution, etc. according to the testing data, we can learn the quantitative relations among the structure of the adjuster, working pressure, diameter of the nozzle, elevation of sprinkler, wind power, velocity of rotation and the range of water

    測試安裝「壓力調節器」后的噴頭的水力性能參數，即工作壓力、流量、射程、水滴的打擊強度、噴灑水分佈特性等。依據所測得的噴頭水力性能參數和射程數據，我們可較清楚的了解「壓力調節器」的結構形式、工作壓力、噴嘴直徑、噴射仰角、風力、旋轉速度和噴頭射程之間的定量關系。
  10. Abstract : this paper analyzes the reason of pressure drop increase of the downstream equipment - coldbox caused by water penetration of the molecular sieve in jngcc, summarizes the treatment, and gives recommendations

    文摘:對工廠生產中分子篩水「穿透」造成其下游裝置? ?冷箱阻力增大的原因進行了認真的分析，總結了處理方法及分子篩處理后的運行狀況，並提出了改進建議。
  11. 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。
  12. Requirement : supply pressure drop must be 1. 0 psid or more when water flow stops from test cock no. 2

    要求：當水流從測試旋塞2號上停止時，供應壓降必須在1 . 0psid及以上。
分享友人
分享到 Line

分享到臉書