rate of ventilation 中文意思是什麼

rate of ventilation 解釋
換氣次數
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  • of : OF ＝Old French 古法語。
  • ventilation : n. 1. 通風，換氣（法）；通風裝置。2. 發泄，發表；（問題的）公開討論；訴諸輿論。
  1. Energy consumption of heating rooms will increase when air exchange rate become large. because the mechanisms of heating methods used currently, such as radiator heating, ceiling heating and warm - air heating, are different from each - other, the indoor thermal environment is not the same when each one of them employed for room heating. for enhancing energy efficiency of heating rooms, indoor thermal comfort and energy saving effects should be investigated when natural ventilation is used to make a good air quality indoors

    房間換氣次數的增加勢必導致供暖房間能耗加大，頂棚輻射、散熱器和熱風等三種採暖方式由於供暖機理不同，形成的室內熱環境特徵不同，通風換氣時產生的通風熱損失也有所區別，為了提高大換氣量房間的供暖節能效果，必須對不同供暖方式在大換氣量情況下的熱舒適性與節能效應進行研究。
  2. Pf series air fans are new low - speed high - flow - rate tube - axial fan. wich represents advantages of high flow, light weight, low noise and lower power consumption. they are key equipment of tunnet ventilation in houses of poultry & livestock poultry

    Pf系列排風扇是新型的低速大流量軸流風機，具有流量大、重量輕、噪音低、耗電省等優點，是畜、禽舍縱向通風的關鍵設備。
  3. In the egg laying industry, the bodies of laying birds often suffer from deteriorated resistance to disease, short duration of the peak period of egg laying time and low rate of egg production due to the laying houses incomplete disinfection, poor sanitation, low - intensity light and lacking ventilation

    在蛋禽飼養中，由於禽舍消毒不徹底，環境衛生較差，光線不足，通風不暢等原因，導致蛋禽機體抗病能力較差，產蛋高峰期持續時間較短，產蛋率降低。
  4. Ventilation rate calculation of one - story building natural ventilation

    地下建築自然通風設計研究
  5. The rate of evaporation depends on the material and such factors as the temperature, the surface area, amount of ventilation, and the pressure exerted on the surface

    蒸發速率取決于材料及諸如溫度、蒸發面積、通風量和施加在此蒸發面上的壓力等因素。
  6. Numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume

    運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區
  7. Abstract : numerical simulation by cfd was carried out to understand the hot current behavior in a tunnel with longitudinal ventilation. it becomes clear that fire source modeling is very important because the hot current behavior is strongly affected by the fire source position and is sensitive to methods in the modeling of the fire source. the flame area which has developed from the fire source is an area of chemical reaction caused by combustion. even if grids in the vicinity of the fire source are made fine, it was difficult to simulate the heat generation area with consideration to this chemical reaction through using a method for setting the heat release rate simply on the fire source surface. therefore, we proposed a method adopting the knowledge on flame shape under the longitudinal ventilation and incorporating it into numerical simulation and it showed a good agreement with the experimental results. it was shown through experiments in a tunnel with longitudinal ventilation that the hot current developed toward the tunnel center downwind from the fire source near a wall. the cause was investigated by numerical simulation and it became clear from the results that the spiral air by the fire plume created a vortex in the crevice between the wall and the plume

    文摘:運用cfd進行數字模擬，以了解縱向通風隧道內熱煙氣流的特性.通過模擬發現對火源進行模擬非常重要，熱煙氣流特性受火源位置的影響很大，並且對火源模擬方法很敏感.火源生成的火焰區是燃燒引起的化學反應區域.即使火源附近的木垛排列完好，也很難在考慮這些化學反應條件下模擬熱生成區域.建議考慮縱向通風隧道內火焰形狀並對它進行數字模擬.模擬結果與試驗結果非常吻合.試驗證明，在縱向通風隧道內，熱煙氣流從靠近墻體火源處順風向隧道中心蔓延.數字模擬結果發現，火災羽流造成的螺旋上升空氣會在墻體和羽流之間形成一個渦流區
  8. The results indicate that the critical ventilation speed is direct ratio to the heat release rate and reverse ratio to the height of the smoke barrier which lies in the stairs ' access between platform and concourse

    研究表明：臨界通風速度與火災熱釋放速率成正比，與站臺和站廳間樓梯口處的檔煙垂壁高度成反比。
  9. This machine is flowing and continuous type drying equipment firstly made by our factory. the machine is used for drying the piece, tape and particle state materials with good ventilation. the machine is suitable for the materials, such as de - watering vegetable. herbal medicine of traditional chinese medicine and others, for which the water content rate is high and the high temperature is not allowed. the machine owns the advantage, that its drying speed is fast, the evaporation strength is high and the product quality is good. the de - watering filtering cake state paste material, after the particle making or bar making, can be dried also

    該機是穿流連續式乾燥設備，用於透氣性較好的片狀、條狀、顆粒狀物料的乾燥，對于脫水蔬菜，中藥飲片等含水率高，而溫度不允許高的物料龍為合適；該系列乾燥機具有乾燥速度快，蒸發強度高，產品質量好的優點，對脫水濾餅狀的膏狀物料，需經造粒或製成棒狀后亦可乾燥。
  10. Theoretical calculation of natural ventilation rate and fact validation

    熱壓作用下自然通風量的理論計算及實測驗證
  11. This step should be repeated 15 times at a rate of 80 per minute. then move to the patient s head and clear his airway. apply mouth - to - mouth ventilation twice

    以上動作以每分鐘80次之速率，連續做15次，再移向病者頭部，暢通氣道，做兩次人工呼吸。
  12. After blowing into his mouth twice, check if the carotid pulse is present. if there is pulse but no breathing, continue to apply mouth - to - mouth ventilation at a rate of 5 seconds until the patient resumes breathing. then place him in a recovery position to provide a free airway

    吹過兩口氣后，檢查其頸動脈是否跳動，如有跳動但沒有呼吸，則繼續以每五秒吹一口氣的速度進行人工呼吸，直至病者恢復呼吸為止，然後置病者于復原臥式。
  13. Their body composition data were also assessed. the results show that maximal heart rate, maximal ventilation and oxygen uptake decreased with age, while the percentage of body fat increased with age in both genders

    研究結果顯示，不論男女，最大心跳率、最高換氣及攝氧能力會隨年齡增長而下降，但身體脂肪比例則跟隨年齡上升。
  14. In this paper, the basic and important parts are studied. for example, the capacity of jet fan in tunnel, the flux distribution and resistance loss in the chimney. this approach is capable of modeling multi - dimensional, time dependent nature of fire in a road tunnel, this paper presents the critical ventilation velocity in various heat release rate and smoke release rate for jingfu highway

    以京福高速公路美菰林隧道的結構參數為依據，當隧道內發生火災時，對隧道煙霧隨時間的發展擴散過程進行了動態的模擬與研究，得出了不同的火災放熱率、發煙率的情況下，控制隧道煙霧迴流的臨界風速這一關鍵數據，為隧道突發火災時的緊急通風控制提供參考。
  15. Presents the characteristics of recreational natatoria, discusses the modes of hvac systems, heat and moisture load calculation, ventilation rate determination and winter ventilation operation adjustment, and provides two calculation methods of outdoor humidity ratio in transition seasons

    摘要介紹了娛樂性游泳館的特點，探討了暖通空調系統形式、熱濕負荷計算、通風量確定、冬季通風運行調節等問題，提出了兩種過渡季室外含濕量計算方法。
  16. Maintain a high rate of ventilation during the first few months of occupancy to ensure that air quality is maintained

    在入住后的數個月內保持高度空氣流通，以維持室內空氣質素良好。
  17. Ventilation for buildings - air terminal units - aerodynamic testing and rating of constant and variable rate terminal units

    建築物的通風.空氣通道終端裝置.恆流量和變流量終端裝置的氣動試驗和額定值
  18. Discusses the influences of the mechanical ventilation rate and air distribution on the workshop pressure, and presents some effective measures to maintain the uniform micro - positive pressure in the workshop

    分析了機械通風量和氣流組織對車間壓力分佈的影響，並提出了紡織車間保持均勻穩定微正壓的技術措施。
  19. For the following discussion a ventilation rate of once per hour is assumed

    因此，有人員活動的房間大約需要每小時更新一次房間中的空氣。
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