兼具降溫與通風(fēng)換氣的方式的通風(fēng)管道

發(fā)布人：http://www.hkcts.com.cn   發(fā)布時(shí)間：2020-04-29 16:07:35

1、水簾墻或高壓噴霧加負(fù)壓風(fēng)機(jī)方式

1, water curtain wall or high-pressure spray plus negative pressure fan mode.

水簾墻降溫的原理眾所周知，空氣經(jīng)過(guò)被淋濕的濕簾，溫度得以降低，濕度會(huì)增加，所以對(duì)溫濕度有嚴(yán)格要求的企業(yè)不可使用，如膨化食品加工、精密電子及其他要求恒溫恒濕的場(chǎng)所。

The principle of water curtain wall cooling is well known. The air passes through the wet curtain, the temperature can be reduced, and the humidity will increase. Therefore, enterprises with strict requirements on temperature and humidity cannot use it, such as expanded food processing, precision electronics and other places requiring constant temperature and humidity.

但 實(shí)踐證明對(duì)絕大多數(shù)企業(yè)如服裝、鞋業(yè)、紡織、機(jī)械、食堂等等一般可適用。企業(yè)可以參考以下標(biāo)準(zhǔn)決定是否能適用此原理空調(diào)；即在春季雨季濕度較大時(shí)，車間生 產(chǎn)是否受影響，如果沒(méi)有影響，則采用此水蒸發(fā)降溫原理的措施基本是的。如果車間工藝對(duì)濕度有要求但要求不高，或者整個(gè)車間內(nèi)只是個(gè)別崗位有濕度要求， 那么可以采用濕度控制裝置加以控制，但此時(shí)溫降幅度可能有一些影響。

But it has been proved that it is suitable for most enterprises, such as clothing, footwear, textile, machinery, canteen and so on. The enterprise can refer to the following standards to determine whether the air conditioner can be applied to the principle; that is, whether the workshop production is affected when the humidity is high in the rainy season in spring; if not, the measures based on the principle of water evaporation and cooling are basically safe. If the workshop process has requirements on humidity but not high, or only individual posts in the whole workshop have humidity requirements, then humidity control device can be used to control, but the temperature drop may have some impact at this time.

由于此措施初投資低、耗電極少，所以有些企業(yè)開(kāi)始采納，但其不足之處也日趨明顯，簡(jiǎn)要羅列如下：

Due to the low initial investment and low power consumption, some enterprises began to adopt this measure, but its shortcomings are becoming increasingly obvious. It is briefly listed as follows:

（1）由于水簾墻要占用絕大多數(shù)窗戶面積，所以一般采光會(huì)被嚴(yán)重影響，這增加了室內(nèi)照明的費(fèi)用及員工在非自然光下工作的疲勞感。

(1) Because the water curtain wall takes up most of the window area, the general lighting will be seriously affected, which increases the cost of indoor lighting and the fatigue of employees working under the unnatural light.

（2）大面積紙質(zhì)黃色的水簾墻裝設(shè)于墻面一般與外墻難以協(xié)調(diào)，造成美觀受損，特別是使用一、二年后其臟污的表面難以清洗造成不雅且非常不衛(wèi)生，所以一般新廠或注重外觀形象的企業(yè)難以接受。

(2) Large area paper yellow water curtain wall installed on the wall is generally difficult to coordinate with the external wall, resulting in aesthetic damage, especially after one or two years of use, the dirty surface is difficult to clean, resulting in indecent and very unsanitary, so it is generally difficult for new factories or enterprises focusing on appearance and image to accept.

（3）風(fēng)吹日曬雨淋以及水簾的高度對(duì)淋濕的水簾壽命造成影響，這會(huì)增加今后的成本，同時(shí)一般會(huì)造成室內(nèi)側(cè)地面或窗臺(tái)漂水打濕。

(3) Wind, sun and rain as well as the height of the water curtain will affect the service life of the wet water curtain, which will increase the cost in the future. At the same time, it will generally cause the indoor side ground or windowsill to be wet by floating water.

（4）這種負(fù)壓通風(fēng)方式要求門(mén)窗全部關(guān)閉，否則大量空氣由于沒(méi)有風(fēng)阻而直接由門(mén)窗進(jìn)入從而對(duì)整體降溫造成影響，實(shí)踐使用發(fā)現(xiàn)許多廠房因貨物、人員頻繁的進(jìn)出或本身不夠密閉，導(dǎo)致效果大打折扣。

(4) This kind of negative pressure ventilation requires all doors and windows to be closed, otherwise a large amount of air will enter directly from the doors and windows without wind resistance, which will affect the overall temperature reduction. In practice, it is found that many workshops are greatly reduced due to frequent in and out of goods and personnel or their own airtight.

少數(shù)企業(yè)不用水簾墻而采用高壓噴霧的方式，這種方式雖說(shuō)成本降低，同時(shí)也避免了水簾墻的缺點(diǎn)，但難以自動(dòng)控制從而可能造成外界濕度變大時(shí)空氣因飽和進(jìn)而使水霧無(wú)法被空氣吸收并打濕車間內(nèi)設(shè)備及產(chǎn)品，另外高壓噴霧極易造成堵塞所以后續(xù)維護(hù)成本較高。

A small number of enterprises do not use water curtain wall and adopt high-pressure spray. Although this method reduces the cost, it also avoids the shortcomings of the water curtain wall, but it is difficult to control automatically, which may cause the outside humidity to become larger. The air saturation causes the water mist to be absorbed by the air and dampened the equipment and products in the vehicle compartment. Besides, the high-pressure spray is easy to cause blockage, so the subsequent maintenance cost is higher.

2、外墻或屋頂裝設(shè)方形空調(diào)

2. Square environmental protection air conditioner installed on outer wall or roof

方形空調(diào)也是采用水蒸發(fā)降溫原理，但與水簾墻不同的是其風(fēng)機(jī)與水簾在同一設(shè)備內(nèi)，屬正壓送風(fēng)，運(yùn)行時(shí)要求門(mén)窗開(kāi)啟。

Square environmental protection air conditioner also adopts the principle of water evaporation cooling, but different from the water curtain wall, its fan and water curtain are in the same equipment, which belongs to positive pressure air supply, and the doors and windows are required to be opened during operation.

此舉當(dāng)然也可以解決高大廠房的通風(fēng)降溫問(wèn)題，但是由于高大廠房跨度大，裝設(shè)于墻面無(wú)法滿足中間區(qū)域的要求，而裝設(shè)于屋面也必須要接風(fēng)管。綜合其用于高大廠房的不足之處羅列如下：

This can also solve the problem of ventilation and temperature reduction of large workshops, but because of the large span of large workshops, the installation on the wall can not meet the requirements of the middle area, and the installation on the roof must also be connected with air ducts. The disadvantages of its comprehensive application in large factory buildings are listed as follows:

（1）性，安裝于外墻的空調(diào)一般需制作1.6米 寬的三角支架固定于墻面，這種安裝方式因力矩大難以保證長(zhǎng)期，特別是經(jīng)常性的人員爬支架上保養(yǎng)維護(hù)，不方便且有隱患，一般的人員或安裝工很難根據(jù) 各種墻體受力程度，鋼結(jié)構(gòu)彩鋼板的受力程度設(shè)計(jì)出完全可靠的支架，從而難以確保人員設(shè)備，這種隱患隨著風(fēng)吹日曬雨淋支架的老化，隨著使用年限而加劇， 全國(guó)已發(fā)生多起整機(jī)墜落事故這完全該引起重視。

(1) Safety, the environmental protection air conditioner installed on the outer wall generally needs to make a 1.6m wide triangular bracket to fix on the wall. This installation method is difficult to ensure long-term safety due to the large torque, especially the regular personnel climbing the bracket for maintenance, which is inconvenient and has potential safety hazards, so it is difficult for the general personnel or installers to follow the All kinds of wall stress levels and steel structure color steel plate stress levels are designed with completely reliable supports, so it is difficult to ensure the safety of personnel and equipment. With the aging of wind, sun and rain drenched supports and the aggravation of service life, there have been many machine falling accidents in China, which should be paid attention to.

（2）裝設(shè)于墻面采用側(cè)送風(fēng)的空調(diào)送風(fēng)距離有限，一般可達(dá)15米，當(dāng)然增加風(fēng)機(jī)的出口余壓可使送風(fēng)距離加大，但噪音及耗電同時(shí)增加，近距離處強(qiáng)風(fēng)可能對(duì)人員及工藝造成影響；接風(fēng)管則使成本大增并使美觀及車間機(jī)械使用等受影響。安裝于屋頂?shù)目照{(diào)要解決屋頂承重及防漏的問(wèn)題，其次是同樣需接風(fēng)管進(jìn)而增加成本。

(2) The air supply distance of the environmental protection air conditioner installed on the wall with side air supply is limited, generally up to 15 meters. Of course, increasing the residual pressure at the outlet of the fan can increase the air supply distance, but the noise and power consumption increase at the same time, and the strong wind at the short distance may affect the personnel and process; the air duct will greatly increase the cost and affect the aesthetics and the use of workshop machinery. The environmental protection air conditioner installed on the roof should first solve the problems of roof load-bearing and leakage prevention, and then it needs to connect the air duct to increase the cost.

（3）經(jīng)測(cè)算，高大廠房使用外掛式或屋面空調(diào)其耗電及初裝成本均可能達(dá)到水簾墻加負(fù)壓風(fēng)機(jī)方式的二倍。

(3) According to the calculation, the power consumption and initial installation cost of the external hanging or roof environmental protection air conditioner used in the large workshop may be twice of that of the water curtain wall plus negative pressure fan.

當(dāng)然，僅對(duì)車間內(nèi)個(gè)別崗位進(jìn)行送風(fēng)降溫，外掛式或屋面空調(diào)不失為較好的選擇。

Of course, only for individual posts in the workshop, external or roof environmental protection air conditioning is a better choice.