A happy person is a productive person but working in an environment where you sweat all day is not fun.
Even in the winter time in cold countries it can be very hot and uncomfortable working in factories such as steel mills and paper mills around certain heat generating machines. One way to cool down is to use fans but electric cables could be a hazard to potentially trip over and fans can be bulky and take up a lot of space, plus difficult to move around. Also, they do not blow cool air as the fan motor can actually heat up the hot air a bit more.
One alternative is a portable compressed air operated “Air Mover” or “Air Amplifier” that can be carried around and plugged into a nearby compressed air line. They are more rugged and durable than a fan, more compact, and produce cooler air as the compressed air goes from high pressure to atmospheric pressure thereby cooling personnel better creating a more comfortable work environment and a more happy and productive individual.