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How An Evaporative Air Cooler Or Swamp Cooler Works

A portable evaporative air cooler, or swamp cooler, is a great alternative for inexpensive cooling. These are both less expensive to purchase and less expensive to run than the usual portable air conditioning unit. Also, the mechanism is much small cooler less complex than an air conditioning unit, so it should take less maintenance and upkeep.

An evaporative air cooler operates on the principle of an endothermic reaction. An endothermic reaction is a process that absorbs energy in the form of heat. The evaporative air cooler passes air via a wet media (wick). As the air passes through the water in the wick evaporates and the reaction causes heat in the air to be absorbed.

This isn’t always so an easy task to understand, but the process is one that we experience every time we sweat. On a hot day, sweat evaporates off from your skin causing the same endothermic reaction as an evaporative air cooler does. Another example is having to leave a swimming pool on a breezy and hot day. Even though the temperature may be over one hundred degrees, the water rapidly evaporating off from your body could make you feel cooled or cold. A normal air conditioning unit uses a liquid like Freon to absorb heat. It then places heat outside the area being cooled through ventilation. An evaporative air cooler instead cools the air with the endothermic reaction described.

Evaporative air refridgerators are better suited for dry climates. More water can be evaporated in dry air than in humid air, making these much more effective when dampness is low. Also, unlike when using a normal air conditioning unit, the area being cooled should not be sealed up. The area should be ventilated so the humid air produced by the cooler can be overly enthusiastic and replaced by drier air.

Since a swamp cooler utilizes water, an acceptable water container size is highly recommended. The rate at which an evaporative air cooler utilizes water is around half a liter an hour depending on the dampness level, so a six to ten liter container is recommended. An evaporative air cooler should have an venting of at least 500 cubic meters hourly. Brands, such as the SPT evaporative air cooler cooler may offer other features this ionizer or ice packages. These additional features start being active . cost, but prices for a portable evaporative air cooler is always less than an equivalent portable air conditioning unit. Plus, they are cheaper to run and look after.

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