Water spray fan: the cool air

Commercial misting water spray fan are a standard fixture at various gatherings, as well as in agricultural and industrial settings, but how do these fans perform in an outdoor patio environment? In this article, I will discuss the many features, ranging from the amount of water they need and the useable range to the climates they thrive and the amount of “wetness” product manufacturers may cause.

The combination of a water spray fan ability to chill the air while also providing the advantages of a traditional fan’s ability to move the air around makes these devices highly useful. Without causing you to get wet, it has the potential to lower the temperature by many degrees (more than 20F!). Ideal conditions are required for this to occur. The best models employ a process called “flash evaporation,” which depends on the water droplets being very, very small. This is why the droplets must be so tiny

How does a fan that mists water work?

These systems by product manufacturers consist of a typical blowing fan, a water supply, and a pump for the water. A fine mist is produced by water that is pushed out of misting nozzles designed explicitly for the purpose, and this mist is then blasted into the air by the fan.

You will then be able to make use of three different types of cooling:

  1. The transfer of heat from your body to colder air. (Slight Benefit)
  2. a wind created by convection from the fan (Moderate Benefit)
  3. The evaporation of water, which results in a decrease in temperature in the air (Major Benefit)

The most significant change is brought about by water transition into the air via evaporation. The process of water evaporation indeed involves energy, and the heat energy that is needed to accomplish this task comes from the surrounding air.

When one gallon of water is evaporated, 8133 BTUs of heat energy are removed from the surrounding air. That is the same as the suggested size for an air conditioning unit to cool a space that is 400 square feet!

This is because the water droplets evaporate quicker and provide a more significant degree of cooling when they are smaller. In a perfect system, the water droplets responsible for producing the mist are so minute (less than 10 microns) that they evaporate in an instant when exposed to air. That is to say; they completely vanish into thin air before they reach the earth and may be seen there. This not only helps to cool the air but also guarantees that there is no remaining water that could get you wet and does so without soaking the area that needs to be cooled.

It is crucial to have enough water pressure.

The water droplets produced by any nozzle will have a range of sizes; however, the mist ranges produced by the most petite nozzle sizes will be the most finely dispersed.


The more costly misting systems will come equipped with water pumps, which will enhance the pressure of the water as it is forced through the nozzles. It is necessary to have this enhanced pressure to force the water through the minute pores required for producing fine water droplet