节能大风扇（通常指工业大吊扇 / 大型节能风扇）的主要动力来源是电力，其核心动力部件与节能原理如下：

简单直接的答案是：大型排风扇产生的风速通常在5级到10级风之间，但它的风力特性与自然风有本质区别。

小型排风扇凭借体积小巧、安装便捷、能耗低、通风换气效率高的特点，适用场景覆盖家庭生活、工业生产、商业服务等多个领域，核心作用是快速排出污浊空气、湿气、异味与余热，改善局部空间的空气质量。以下是具体应用场景及适配优势：

Industrial mobile fans are high-power ventilation and cooling equipment designed for industrial scenarios such as factories, workshops, warehouses, and construction sites. Their core features revolve around the high load, large space, multi working conditions, and easy mobility requirements of industrial scenarios. Unlike household fans, which have lightweight and low-power characteristics, their core advantages are concentrated in four dimensions: power performance, structural durability, mobility flexibility, and safety protection. The specific core features are as follows:

The selection of industrial exhaust fans is a systematic project that requires comprehensive consideration of multiple key factors to ensure their efficient, economical, and safe operation. The following are the core factors to consider when making a choice, which can be summarized into several main aspects: