ENVIRO INTERNATIONAL CORPORATION (EIC) is one of the leading Manufacturers, Suppliers and Exporters of Dust Suppression System, Centrifugal Fan, Air Washers, Bag Filters, Decorative Beads, Pneumatic Conveying Systems, Stock Yard Sprinkling System, Fog Cannon, Belt Conveyor System, Screw Conveyor System, etc.

Air Washer

Enviro International Corporation is one of the specialized Manufacturers, Exporters & Suppliers of Air Washer. We specialize in manufacturing two-stage Air Washers, which do not produce humidity levels as high as that produced by traditional single-stage evaporative coolers. We use advanced technology and improvised materials to manufacture these Air Washers. Our Air Washer is optimized to deliver flawless performance. We are committed to provide Air Washer at very reasonable price.

An advanced two-stage evaporative cooler uses 100 percent outdoor air and a variable speed blower to circulate cool air. Two-stage evaporative coolers can reduce energy consumption by 60 to 75 percent over conventional air conditioning system.

A 2-stage Air Washer (aka "indirect/direct" cooling) represents the most advanced cooling system utilizing evaporative cooling technology. This cooling option is much more energy efficient than cooling with refrigerant (standard air conditioning), but it's not suitable for all cooling applications.

Let's explain 2-stage evaporative cooling in terms of the stages of cooling that occur. In the first stage, hot outside air passes inside a heat exchanger that is cooled by evaporation on the outside. During this initial cooling phase, the incoming air stream doesn't pick up any extra moisture. In the second stage, the same air stream passes through a water-soaked pad where the additional cooling takes place and the air picks up some additional humidity.

A two-stage Air Washer can deliver cool indoor air with a relative humidity in the 50%-65% range, while direct Air Washers typically condition the air at around 70% relative humidity.

Direct Evaporative Cooling
A direct Air Washer is the simplest type of cooling system available. You can duplicate the function of a direct Air Washer by wrapping a wet handkerchief around your neck on a hot day, and standing in front of a fan. It takes heat energy to turn water (or any liquid) from a liquid into a vapor. As the water in the wet handkerchief evaporates, your body gives up heat and you feel cooler.

A direct Air Washer has just a few basic parts, as shown in the drawing. A large fan pulls hot air through a dampened sponge-like pad, and distributes the resulting cooler air to the interior space through a ductwork system.

A direct Air Washer works best in a hot, dry climate where it's desirable to add humidity to air while cooling it. In hot, dry areas throughout the Southwest, this type of cooling system is a popular alternative to refrigeration-based air conditioning. Air Washers consume less energy than refrigerant-based systems because a fan can operate on less power than a compressor.

If you live in the Southeast, where summer weather is hot and humid, a direct Air Washer is not a wise choice. Instead, consider an indirect Air Washer, a two-stage Air Washer, or a conventional refrigerant-based AC system.

Indirect Evaporative Cooling
Indirect evaporative cooling works on the same principle as direct evaporative cooling lowering air temperature by causing water to evaporate. The main difference with an indirect system is that a heat exchanger is used to cool the air supplied to the living space. The evaporative cooling cycle occurs in the heat exchanger.

Here's a sequential explanation of what happens in an indirect Air Washer:

  • Hot outside air is blown through a heat exchanger that is supplied with water. One design for this type of heat exchanger features a series of metal tubes that are kept wet on their outside surfaces. As hot air passes over these tubes, the water evaporates and the tubes are cooled. After passing over the tubes, the cool, moist air is exhausted to the outside.
  • As cooling happens on the heat exchanger's exterior surfaces, hot exterior air is drawn through the tube interiors. This air is cooled, but without gaining any extra humidity, before it is blown through ductwork to the building interior.

Indirect evaporative cooling provides cool air to interior spaces without as much humidity as direct evaporative cooling. This, cooling method is more suitable for areas where additional humidity isn't desirable for interior air. Because indirect evaporative cooling requires two fans rather than one, it consumes more electricity than direct evaporative cooling.

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