The determination of the airwasher unit's capacity

You probably already know that Air Washer Units and air conditioners are both types of air conditioning equipment that use evaporative cooling (similar to the function of a water cooler) to cool, raise relative humidity, and remove air pollution from the desired environment (if the Air Washer Unit is used to heat from a coil containing hot water or steam or a heater is used in the device). As a result of its capacity to produce moisture, air washers are ideal for usage in regions with hot, dry, and moderate climates (with a relative humidity of 40%).

Classification of air washer units

Based on the air washer's categorization and by the appropriate standards, the required cfm should be determined. Typically, air washers can be divided into one of the following three groups:

• Class 4 air washer
• Class 6 air washer
• Class 8 air washer

According to overall, Class 8 air washers can cool and humidify air better than Class 6 air washers and Class 6 air washers can cool and humidify air better than Class 4 air washers. The classification of the air washer should be taken into account when determining its capacity because each of these groups has distinct design requirements.
The next section explains how to determine the capacity of class 4, 6, and 8 air washers, for instance, using Shiraz City's meteorological data. In Shiraz, the summertime dry air temperature is 35 degrees Celsius (95 degrees Fahrenheit), and the wet bulb temperature is 16 degrees Celsius (61 degrees Fahrenheit).

Estimating the Class 4 air washer capacity

Comparing class 4 air washers to class 6 and class 8 air washers, class 4 air washers have a lower cooling and humidifying intensity (60% relative humidity). Low flow nozzles (4 gpm per 1000 cfm of moving air) are arranged in a row on these air washers. To reach the air washer device's output temperature while accounting for the aforementioned temperature conditions, we have:

If we set the required ambient air temperature at 35 °C (95 °F), we get the following results:

You will understand this issue by using an example; Assume that the desired space has a cooling load of 30.000 Btu/hr. The required aeration volume in this situation is determined as follows:

Estimating the Class 6 air washer capacity

In comparison to class 8 air washers, class 6 air washers are less intensely humidifying and cooling (70 percent relative humidity). The average flow rate of a Class 6 airwasher is higher than that of a Class 4 airwasher, and the water flow rate is 6 GPM for every 1000 cfm of air passing through it. The majority of used air washers fall into this category; Considering the aforementioned circumstances in Shiraz, we have:

If we utilise an air washer class 6 with the conditions from the preceding example, we will have:

Estimating the Class 8 air washer capacity

Class 8 air washers are more powerful than class 4 and 6 air washers (85% relative humidity), but they are rarely utilised. They contain two rows of nozzles and are more effective at chilling and humidifying. A larger pump and more nozzles are required for the class 8 air washer than for the class 4 and 6 air washers since the water flow rate in these air washers is 8 GPM per 1000 cfm of flowing air; The following describes the weather in Shiraz:

Class 8 air washers are more powerful than class 4 and 6 air washers (85% relative humidity), but they are rarely utilised. They contain two rows of nozzles and are more effective at chilling and humidifying. A larger pump and more nozzles are required for the class 8 air washer than for the class 4 and 6 air washers since the water flow rate in these air washers is 8 GPM per 1000 cfm of flowing air; The following describes the weather in Shiraz:

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Final speech

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Since 2004, DamaTajhiz HVAC Group has been Iran's first and most well-known specialized organisation in the field of air conditioners, air installation equipment, and all equipment for swimming pools, saunas, and jacuzzis. Use this group's period as a reference. Call +98 21 88822550 to speak with the specialists at DamaTajhiz Engineering and Production Company for more information HVAC.

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