With the continuous warming of the average temperature, the central part of each plant has just begun to consider the problem of temperature reduction. It is a popular temperature reduction method in the production workshop of the processing plant to use the ventilation pipe to carry out temperature reduction. What key points must be paid attention to when using the ventilation pipe to reduce the temperature?

　　1、通气减温。因为光照房屋建筑、机械设备、身体等热原造成必须自然通风的场地平均气温高过户外。负压风机能将房间内热流快速排出来，让室内温度和外部溫度环比增长，以至于生产车间内溫度上升。

　　1. Ventilation temperature reduction. The average temperature of the site that must be naturally ventilated is higher than that of the outdoor area because of the heat sources such as buildings, machinery and equipment, and the body. The negative pressure fan can quickly exhaust the heat flow in the room, so that the indoor temperature and the external temperature increase month by month, so that the temperature in the production workshop rises.

　　2、气体流动性带去身体发热量，气体流动性加快汗水挥发而消化吸收身体发热量，进而让身体觉得清凉，和自然风相同清凉。

　　2. Gas mobility takes away the body's heat. Gas mobility speeds up the evaporation of sweat and digests and absorbs the body's heat, which makes the body feel cool, as cool as the natural wind.

　　3，负压风机只能自然通风减温的功效，沒有致冷的作用，清凉是身体的觉得。负压风机会降是多少溫度的叫法是愚昧的。

　　3. The negative pressure fan can only naturally ventilate and reduce the temperature, and has no cooling effect. It is the feeling of the body to be cool. It is foolish to call the temperature drop of negative pressure wind.

　　4、全部通风工程必须和湿帘相互配合应用，在夏天更酷热的那时候可将生产车间内温控在29摄氏之内。但身体的清凉觉得可与空调对比，稍长期冲着湿帘的人要觉得冷而吃不消。

　　4. All ventilation works must be applied together with the wet curtain, and the temperature in the production workshop can be controlled within 29 ℃ in the hottest summer. But the cool feeling of the body can be compared with the central air conditioning. People who have been washing the wet curtain for a long time should feel cold and can't bear it.