Evaporative cooler : self salt clean

Abstract EN

Evaporative coolers are popular in the dry climate region as an energy efficient means for space cooling.

It consists of a large metal box with a big fan and three water wetted pad doors.

The wetted pads are usually made of cedar shavings or cellulose, which kept damp by a water circulation pump.

The fan drags the hot and dry outside air through the wetted pads cooling the air due to evaporate water molecules from the pads.

The fan then blows the cooled air through an outlet vent.

Evaporative coolers are relatively economical, less expensive to install and to operate.

They are consuming less electricity than a refrigerated unit, and they do not need an expert to maintain.

In addition, evaporative coolers provide the building with a fresh humid air.

However, evaporative coolers have some disadvantages; one of them is the deposited salt.

Water usually has a high percentage of mineral.

The evaporative mechanism will leave mineral deposits on the pads and interior of the cooler.

This cumulative mineral will close the porous of the wetted pads and damage them and will participate to corrosion of the cooler frame.

This study aims to develop the evaporative cooler efficiency by utilizing solar water still.

The main objective of this proposal technique is to minimize the quantity of the cumulative salt by removing part of it.