Commercial dehumidifiers can be used for many applications including:

• Industrial applications e.g. warehouses, store rooms. 
• Commercial applications e.g. Large shopping areas, Museums, Galleries
• Drying out buildings

They are a perfect way to keep the remove humidity in a room to prevent any damage from occuring to any valuables in the case of storage rooms and galleries, and damage to any fixtures keep the atmosphere more pleasant in a swimming pool area.  All industrial dehumidifiers don't have a water collection bucket as they are designed to rmeove moisture from the air at such a rate it would be impractical to collect it in a bucket to be emptied out every half an hour or so, the continual drain can be hungoutside or drained into a pipe inside the buliding, the water that is coming out of an industrial dehumidifier is so clean it could be used for watering plants.