Evaporative Cooling Pads – The Principles of Evaporative Cooling

We all keep hearing the term evaporative cooling and the system components’ name like evaporative cooling pads, but we don’t have an idea how significant these are for our homes and industries. Evaporative cooling mechanism is based on evaporative air conditioning that use evaporation process to cool the air down.

In the evaporative cooler, fitted with high-quality evaporative cooling pads, an air pump circulates water from a reservoir onto the evaporative cooling pad, which thus becomes very wet. A fan pull air from outside the system via moistened pad. Once it flows through the evaporative cooling pad, the air is cooled down by the process of evaporation. The key to successful evaporative cooling is ensuring that all cooling pads are fully saturated always during the working and the systems motors and fan are designed and sized to ensure a proper airflow for the home or industrial facility.

The Evaporative Cooking Principles

Once water is evaporated, the energy is lost from an air, which reduces the temperature. While dealing with evaporative cooling pads and system, two temperatures are very important.

  • Dry Bulb Temperature

This the temperature often thought as air temperature, measured by a standard thermometer exposed to the outside air stream.

  • Wet Bulb Temperature

This is the lowest temperature that is reached in case of water evaporation only. At the time of water evaporating into the air, the wet-bulb temperature, as compared to the air’s dry-bulb temperature, is used to determine the potential of the evaporative cooling pads. The dry and wet bulb temperature are used to compute the relative humidity. The evaporation takes place at the humidity level less than 100% and when the air starts absorbing water. Any given air volume can hold a specific quantity of water vapors and the level of absorption is based on the quantity it is already holding.

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