负压式通风对钢结构厂房降温效果好
由于钢结构厂房造价低、施工周期短、跨度大、结构稳定、可回收无污染等优势，因些，在一些企业中得到了广泛应用，常用于制造业厂房、仓库等领域。长期以来钢结构厂房内由于太阳照射和生产过程中机器产生的高温无法外排，导致厂房内高温闷热而无法得到有效解决。人们尝试过采用复合彩钢瓦；在屋顶设置通风天窗；安装各种屋顶通风器（如轴流式屋顶风机、离心式屋顶风机、无电机涡轮屋顶风机等）；有的工厂在钢结构厂房屋顶安装环保空调（冷风机）；甚至有很多工厂在钢结构厂房屋顶布水管撒水；钢结构厂房高温闷热的问题仍然无法得到有效解决。
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很多人都知道负压风机的超大排风量和高效率的抽风性能。将负压风机应用于钢结构厂房屋顶风机，应对钢结构厂房的大跨度和超大内部空间是负压风机的拿手好戏。跨度越大的厂房使用负压式通风越经济，因为跨度越大从进气口到负压风机的距离越远，所以换气一次空气流动的距离越远，风速也越快，风机安装数量可以相应减少即可到理想的效果。负压式通风应用于超大跨度的钢结构厂房可以设计出神气的空气魔方。比如10000平米和5000平米两间厂房，10000平米的厂房的跨度是5000平米的厂房的两倍，厂房高度相同，这两间厂房安装相同数量的负压风机可以达到相同的通风降温效果。
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