displacement ventilation 中文意思是什麼

displacement ventilation 解釋
置換通風
  • displacement : n 1 轉位，移動；取代，置換；（人的）流離失所。2 撤換，免職。3 【機械工程】（活塞）排氣量；【航海...
  • 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. A displacement ventilation system was provided, it can form the " air layer " at the bottom of room so that resistance dewiness air meet directly the cold floor surface

    本文採用房間下部送風的方式，使之形成地面「空氣湖」 ，阻隔潮濕空氣與室內地板表面的直接接觸。
  2. Numerical simulation of airflow in air conditioning rooms with displacement ventilation

    置換通風空調房間氣流組織的數值模擬
  3. On this basis, puts forward a kind of scheme and idea of displacement ventilation using in high - speed railway air - conditioned car, makes numerical simulation on the flow field of the car and calculates the pmv value of the typical section

    在此基礎上，提出了下送風用於高速列車空調的一種方案和構想，並對設計方案的流場進行了數值模擬與典型斷面的pmv值計算。
  4. The floor radiant cooling with displacement ventilation system is the one of the effective method to enforce the system cooling ability and prevent dewing

    摘要地板供冷配合置換通風是改善地板供冷能力偏低，預防結露的有效措施之一。
  5. In the last part, an experiential formula for nondimensional thermal stratification height is obtained, which includes inlet temperature t, inlet velocity v, heat transfer of the wall body q and the distance of heat source l. in order to obtain a more realistic result, the ? model is used to simulate the airflow and the buoyancy item is treated by boussinesq hypothesis. the paper investigates the flow field of the displacement ventilation in an office by a numerical method

    兩方程湍流模型為基礎的壁面函數處理方法，對熱浮升力項採用了boussinesq假設，得到了收斂的溫度場、速度場分佈。在此基礎上，給出了熱力分層高度的計算方法，並分析了送風溫度、送風速度、圍護結構傳熱和熱源分佈等因素對熱力分層高度的影響。
  6. In this paper, we have discussed the influences of supply air temperature, supply air quantity, supply air turbulence, as well as mixing ratio of supply unit. all of above parameters are important for the extension of the adjacent zone. consideration of all the parameters is essential for a good system design which can ensure the advantage of displacement ventilation

    本文研究了各種送風參數對鄰接區的大小的影響，結果表明：送風溫差、送風量、送風湍流度以及送風口的摻混量等因素對其都有重要影響，在設計時必須仔細平衡這些因素，確定合適的送風口和送風參數，才能使設計更加合理，充分發揮出置換通風系統的優勢。
  7. Displacement ventilation also has higher energy using ration than other supply air systems, ie it has higher temperature effectiveness, and that displacement ventilation system always has part quantity of heat lying upside area of room, air supply outlet lies at low side, supply air direct come into workaround, and only absorb heat and humid of workaround, assure satisfaction of the design conditions of workaround

    對于置換通風其節能性也優于其它的送風方式，即其溫度效率高，而且置換通風總有部分熱量處于房間上部區域，送風口設在低部，送入空氣直接進入工作區，只是吸收了工作區的熱、濕量，保證工作區的氣象參數滿足要求。
  8. Research on displacement ventilation of indoor air quality and saving energy

    置換通風條件下室內空氣品質研究
  9. Since the 1980s, with the developing of air - condition technology, men begin thinking much of room condition quality, displacement ventilation has been given a good favour for its higher ventilation effectiveness and air exchange efficiency

    二十世紀八十年代以來，空調技術的發展開始對室內環境質量有了足夠的重視，置換通風因其較高的通風效率和換氣效率而受到人們的青睞。
  10. But it will affect the airflow organization with the cooled airflow drops. also, it studies the impact of solar radiation on displacement ventilation and cooled ceiling system. horizontal warm areas lowers the height of thermocline and is unfavorable to displacement ventilation system ; vertical hot surfaces will destroy the thermal stratification

    水平熱表面的存在，會使系統的溫躍層高度降低，對置換通風系統會有負面影響，為了減小水平熱表面的影響，對于地板材料應該選擇對長波輻射吸收較低的物質;垂直局部熱表面的存在會破壞置換通風系統溫度分層的特性，使垂直方向溫度變化減小。
  11. On the basis of the related results abroad as well as our local condition, we have developed and given in details a method and its procedures of displacement ventilation system design in commercial and high - rise buildings, which are suitable for our country. it can be served as the refe

    本文在國外已有成果的基礎上，結合本地實際，研究提出了適用於我國舒適性置換通風的設計方法和步驟，適用於辦公類商用建築和高大建築中的應用設計，可供有關人員設計時參考。
  12. The weather in east china, hot and humid, is quite different from that in scandinavia region. since the indoor environment is closely related to the outdoor natural condition, many conclusions on displacement ventilation drawn in other countries may not be suitable for applications in china. therefore, it is necessary to study further effect of the existence of water vapor on displacement ventilation and to analyze humidity control problems

    已有的關于置換通風的研究大都是植根于歐美自然氣候條件下進行的，而我國華東大部分處于亞熱帶地區，夏季炎熱潮濕，這和北歐地區乾燥的氣候有很大的差異，有必要進一步研究空氣中水蒸氣含量對置換通風系統的影響以及與系統的濕度控制相關的問題。
  13. Indoor air quality and displacement ventilation

    置換通風與室內空氣品質
  14. Displacement ventilation and indoor air quality

    室內空氣品質與置換通風
  15. Numerical simulation study of displacement ventilation

    置換通風的數值模擬研究
  16. The analysis of characters about displacement ventilation

    置換通風的特性分析
  17. Application of displacement ventilation to modern hospital

    置換通風方式在現代醫院的應用
  18. Compared with the traditional mixing ventilation, displacement ventilation, a new concept in air - conditioning system, has showed several remarkable advantages : it improves indoor air quality, consumes less energy, and has better economical efficiency

    置換通風系統作為一種新型的通風方式，與傳統的混合通風相比，在許多場合具有明顯的優勢：例如，能提供更好的室內空氣品質、節約能耗以及經濟效益顯著等等。
  19. There is no thoroughly rounded theory about displacement ventilation system in our country at present and our research begins recently. the study work of this paper will be useful for further optimization design of displacement ventilation system. this dissertation includes five parts. the first part introduces the development of the displacement ventilation and the background of research in domestic and oversea. in the second part, it gives working principle of displacement ventilation system and it ’ s advantages to the mixture ventilation. the study also gives a series of indexes to evaluate displacement ventilation system and specifies air supply terminal device and so on. it is needed to simulate and analyse the velocity field, temperature field and distribution of flow field. this is the third part. the forth part specifies the simulative method for thermal stratification of displacement ventilation system. it gives some factors affecting thermal stratification height such as inlet temperature, inlet velocity, heat transfer of wall body, distance of heat source and so on

    本文的研究工作主要包括以下幾個方面的內容: （ 1 ）綜述了國內外相關的研究現狀和研究背景; （ 2 ）簡介了置換通風的工作原理，並分析了它相對于混合通風的優良特性及評價指標、末端裝置等; （ 3 ）對採用置換通風方式房間的溫度場、速度場和氣流分佈進行了模擬計算與分析; （ 4 ）對採用置換通風方式房間的熱力分層高度進行了模擬計算，並分析其影響因素，如:送風溫度、送風速度、圍護結構傳熱和熱源分佈等; （ 5 ）擬合了無量綱熱力分層高度相應于送風溫度t 、送風速度v 、熱源間距離l和圍護結構傳熱q的經驗公式。
  20. According to the conditions of our outdoor air which is more heavily polluted than that of european countries, we have investigated the contaminant distributions in an office equipped with displacement ventilation system under two different air supply conditions

    我國大多數地區的室外空氣品質不如歐美，而建築物內的空氣品質在很大程度上取決于室外空氣狀況，因此需要研究室外空氣條件對置換通風房間內空氣品質的影響情況。
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