For evaporative cooling systems, we often refer to the evaporative efficiency, which relates the actual temperature drop achieved by the system to the maximum possible cooling (based on wet bulb depression). Evaporative Efficiency = Dry Bub Temp - Supply Air Temp / Dry bulb Temp - Wet Bulb Temp.
so if im using a pocket psychrometer, and it measures wet bulb & dry bulb as well as the relative humidity, do i need to be in the wet bulb mode in order to read the correct humidity %?
Not sure how your pocket psychrometer works, but you need at least the dry bulb and wet bulb temperatures to find the relative humidity. With these two values you can determine relative humidity. The dry bulb temperature alone won't work, as the wet bulb temperature indicates the level of moisture for any particular dry bulb temperature.
@@MEPAcademy I have the field piece PRH2, it shows relative humidity % in both readings, when i switch between them it stays the same so i believe its already doing the calculation for me, im only really just switching between WB & DB,
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How about WET BULB DEPRESSION RATIO?
For evaporative cooling systems, we often refer to the evaporative efficiency, which relates the actual temperature drop achieved by the system to the maximum possible cooling (based on wet bulb depression). Evaporative Efficiency = Dry Bub Temp - Supply Air Temp / Dry bulb Temp - Wet Bulb Temp.
so if im using a pocket psychrometer, and it measures wet bulb & dry bulb as well as the relative humidity, do i need to be in the wet bulb mode in order to read the correct humidity %?
Not sure how your pocket psychrometer works, but you need at least the dry bulb and wet bulb temperatures to find the relative humidity. With these two values you can determine relative humidity. The dry bulb temperature alone won't work, as the wet bulb temperature indicates the level of moisture for any particular dry bulb temperature.
@@MEPAcademy I have the field piece PRH2, it shows relative humidity % in both readings, when i switch between them it stays the same so i believe its already doing the calculation for me, im only really just switching between WB & DB,
@@JP-sd2cw You're correct, its reading both Dry bulbs and Wet bulb to give you Relative Humidity.