通風(fēng)管道是通風(fēng)和空氣調(diào)節(jié)體系的主要組成有些，它把通風(fēng)、空調(diào)體系的進(jìn)風(fēng)口，空氣的熱、濕及凈化處理設(shè)備，送(排)風(fēng)口、部件和風(fēng)機(jī)連變成一個全體，使之有用運(yùn)轉(zhuǎn)。下面來針對
濟(jì)南通風(fēng)管道加工的相關(guān)知識進(jìn)行介紹。
Ventilation ducts are the main components of the ventilation and air conditioning system. They connect the air inlets of the ventilation and air conditioning system, the heat, humidity and purification treatment equipment of the air, the air supply (exhaust) outlets, components and fans into a whole to make them work effectively. Next, we will introduce the relevant knowledge of Jinan ventilation pipe processing.
通風(fēng)管道的規(guī)劃使命，便是要合理地安排空氣活動，在確保運(yùn)用作用的前提下，使工程初投資和運(yùn)轉(zhuǎn)維護(hù)費(fèi)用省。因而，通風(fēng)管道規(guī)劃是不是合理，直接影響到全部通風(fēng)、空氣調(diào)節(jié)工程締造和運(yùn)用的技能經(jīng)濟(jì)作用.由此可見，統(tǒng)籌思考通風(fēng)管道規(guī)劃中的各種疑問足十分主要的。
The planning mission of the ventilation duct is to reasonably arrange air activities, and save the initial investment and operation and maintenance costs of the project on the premise of ensuring the use role. Therefore, whether the ventilation duct planning is reasonable or not directly affects the technical and economic effects of the creation and application of all ventilation and air conditioning projects. It can be seen that it is very important to comprehensively consider various questions in the ventilation duct planning.
基本要求：
Basic requirements:
1.把握通風(fēng)管道內(nèi)活動阻力(沖突阻力和有些阻力)的核算辦法和壓力散布規(guī)則;
1. Grasp the calculation method and pressure dispersion rules of the activity resistance (conflict resistance and some resistance) in the ventilation pipe;
2.熟練把握比摩阻、典型有些構(gòu)件的有些阻力系數(shù)的斷定辦法;
2. Master the determination methods of specific friction and some resistance coefficients of typical components;
3.把握均勻送風(fēng)管道規(guī)劃核算的原理和辦法;
3. Grasp the principles and methods of planning and accounting of uniform air supply pipeline;
4.把握風(fēng)管的安置和挑選;
4. Grasp the placement and selection of air ducts;
5.了解氣力輸送體系的管道核算和氣一固兩相流的阻力特性;
5. Understand the pipeline accounting of pneumatic conveying system and the resistance characteristics of gas-solid two-phase flow;
6.能斷定風(fēng)管體系中風(fēng)機(jī)的作業(yè)點(diǎn)。
6. Be able to determine the operation point of the fan in the air duct system.
風(fēng)管內(nèi)空氣活動的阻力
Resistance of air movement in air duct
空氣沿風(fēng)管活動的阻力有兩種，一種是因為空氣自身的粘滯性及其和管壁之間的沖突而發(fā)生的沿程能量丟失，稱為沖突阻力或沿程阻力;另一種是空氣在流經(jīng)風(fēng)管中的管件和設(shè)備時，因為流速的巨細(xì)或方向改變及隨之發(fā)生的渦流形成對比集中的能量丟失，稱為有些阻力。
There are two kinds of resistance of air movement along the air duct. One is the energy loss along the air due to the viscosity of the air itself and the conflict between the air and the pipe wall, which is called the conflict resistance or the resistance along the air duct; The other is that when the air flows through the pipe fittings and equipment in the air duct, the energy loss is relatively concentrated due to the change of the flow velocity or direction and the subsequent vortex, which is called some resistance.
依據(jù)流體力學(xué)原理，空氣沿明顯斷面不變的直管活動時，沖突阻力可按下式核算：
According to the principle of fluid mechanics, when the air moves along the straight pipe with any section unchanged, the conflict resistance can be calculated according to the following formula:
沖突阻力系數(shù)入與風(fēng)管內(nèi)空氣的活動狀況和管壁的粗糙度有關(guān).在通風(fēng)和空調(diào)體系中，薄鋼板風(fēng)管的空氣活動狀況大多歸于紊流潤滑區(qū)到粗糙區(qū)之間的過渡區(qū).通常，即便高速風(fēng)管的活動狀況也處于過渡區(qū).只需風(fēng)管直徑很小，外表粗糙的磚，混凝土風(fēng)管內(nèi)的活動狀況才歸于粗糙區(qū)。
The conflict resistance coefficient is related to the air movement in the duct and the roughness of the duct wall In the ventilation and air conditioning system, the air activity of the thin steel duct is mostly attributed to the transition zone between the turbulent lubrication zone and the rough zone. Generally, even the activity of the high-speed duct is in the transition zone Only the bricks and concrete air ducts with small diameter and rough appearance can be classified as rough areas.
The introduction of relevant knowledge of ventilation pipe processing is here. If you have any questions about this, please come to our website http://zypolishing.com Consult and understand.
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