Introduction:
Desert coolers are one of the most cost-effective and efficient cooling solutions for hot and dry climates. They have been used for centuries to provide cool and refreshing air in arid regions.

Working principle:
The working principle of a desert cooler is based on the concept of evaporative cooling. It works by passing hot and dry air through a wet pad or filter. The water in the pad evaporates, absorbing heat from the air and reducing the temperature. The cool and moist air is then circulated into the room, providing a refreshing and comfortable environment.

Hot and dry weather:
Desert coolers work best in hot and dry weather conditions. This is because they rely on the low humidity to achieve effective cooling. In hot and dry climates, the air is very dry, and the evaporation process is very efficient. As a result, the air that is blown out of the cooler is cool and refreshing.

High humidity:
In areas with high humidity, the cooling effect of desert coolers is reduced. This is because the air is already saturated with moisture, and there is less room for evaporation to take place. This means that the air blown out of the cooler will not be as cool and refreshing as in dry climates.

Conclusion:
In conclusion, desert coolers are an excellent cooling solution for hot and dry climates. They are cost-effective, energy-efficient, and provide cool and refreshing air. However, they may not be as effective in areas with high humidity. It is important to choose the right cooling solution based on the climate and weather conditions in your area.

Because the amount of water vapour less in air and water present inside desert cooler evaporate more, thereby cooling the surrounding more.