Evaporative Cooling Duct Sizing

Start by selecting the a geographic location the cooler will be used in and then cooler model.

Evaporative cooling duct sizing.

Like air conditioners evaporative coolers need to be the right size in order to adequately cool a room. When it comes to choosing a portable air conditioner one of the most important factors to take into account is the model s btu rating. The resulted will appear to the right. Pmi evaporative cooling sizing calculator.

The next step to choosing an evaporative cooler is to find a correctly sized unit. 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. 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. Evap cooling takes more air flow than heating so the ducts need to be sized for the cooling.

A good installer retailer will also take into consideration your local humidity levels before giving you an accurate quote. 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. You could size the main trunk line by the volume of the ducts to registers or you could just maintain the cooler outlet size.