How much cooler exactly is the output air?

Handy Cooler™ is based on evaporative cooling. The cooling effect relies on the the ambient/surround air temperature and relative humidity. Looking at the tables below, you can find out how many degrees (C or F) Handy Cooler™ reduces under specific ambient temperature and humidity. A dry and hot environment (closer to the bottom left portion of the tables) will cool the air more than a cold and humid environment (top right portion of tables).

Figures are for approximate guidance only. Actual performance may differ due to uncontrolled factors such as air pressure, fan speed, wetness of sponge, etc.

Optimum environment to use Handy Cooler™

The more hot and dry the weather is, the better it works (colored YELLOW in image below). Therefore, desert areas are ideal for Handy Cooler™ to operate. Example places:

1. -Arizona, Texas, Nevada, and central USA
   

2. -Egypt
   

3. -Middle East
   

4. -Central Australia
   

Wet and humid environments (colored GREEN below) do not allow effective evaporation to take place, therefore not allowing Handy Cooler™ to perform efficiently.

Being small does not necessarily means a sacrifice to the cooling effectiveness.

Here are 2 images of the R&D team conducting a field test in the streets of Las Vegas in summer 2008. The temperature on the day was 102.4ºF, with a humidity of 15%. The result: the temperature of the air was cooled by 23.8ºF!

If the day was even hotter and drier, the air would have cooled even more! (Up to 30ºF)

Outside temperature

Handy Cooler™ temperature

Air cooled by 23.8ºF in a real life field test in Las Vegas, USA in Sept 2008.