Public pools
In contrast to smaller private pools, there are only a few rest periods when the dehumidification process can be engaged. Dehumidification is highly important in order to avoid damage to the building and installations.
In the past:
A fan was installed with an outside air connection and would simply exhaust the moist air on a regular basis into the atmosphere. However, for a modern energy conscious society this solution is not well suited as it requires large quantities of energy being wasted by heat extraction.
Today:
We first remove the moisture in the air using a heat pump and heat recovery, capture the condensation produced before then draining it off into a waste water system. The heat simultaneously removed from the air is resupplied to the now dry air and released into the swimming pool area. As a rule, this cycle suffices to maintain the room temperature to the correct level and in addition can be used to gain heating energy for pool water heating.