Space Volume is the volume of the space , height x width x length in cubit meter. K-factor is the factor that converts the volume into surface area of exposure. A space of 20 x 10 x 10 meter space. Calculate the infiltration load. This is the estimate of the exhaust air or fresh air volume entering the room.
Fresh air is needed for human being.
Each person requires an estimate of 20 CMH of fresh air. Door opening is another cause for ventilation. Every time the door opens it adds to the fresh air intake and should be part of this formula. This values are indicative of the capacity of the dehumidifiers. Because different manufacturers use a different condition to measure this value, there is always confusion in selection.