Evaporative Cooling Duct Sizing

You could size the main trunk line by the volume of the ducts to registers or you could just maintain the cooler outlet size.

Evaporative cooling duct sizing.

Duct sizing equal pressure method on the chart we start by drawing a line from 0 65 pa m all the way up and then draw a line across from our required volume flow rate in this case for section c we need 0 21m3 s. Refine your configuration by adjusting static pressure desired indoor temperature air change method and ceiling height. Evap cooling takes more air flow than heating so the ducts need to be sized for the cooling. The resulted will appear to the right.

To select the size of an evaporative cooler you have to consider the airflow and the size of the area you have in mind to cool. Start by selecting the a geographic location the cooler will be used in and then cooler model. A good installer retailer will also take into consideration your local humidity levels before giving you an accurate quote. Use the calculator below to determine the appropriate cooler sizing based on your needs.

As a single adiabatic humidifier can provide up to 2 200 lbs hr 1 000 kg h of moisture from as little as 300w of electricity their potential for providing low cost adiabatic cooling in air handling units is great. Pmi evaporative cooling sizing calculator. Like air conditioners evaporative coolers need to be the right size in order to adequately cool a room.