where
Nt = number of transfer units
η = fractional collection efficiency
α and β = characteristic parameters for the type of particulates collected
Calculate the total pressure loss PT. To calculate the total pressure loss, we need the contacting power for the gas stream energy input and liquid stream energy input.
Calculate the contacting power based on the gas stream energy input PG in hp/1000 acfm. Because the vendor gives the pressure drop across the scrubber, we can calculate PG: