The high rate of water evaporation from the shell of heated indoor pools increases their relative and absolute humidity.

Therefore, it is essential to control the dry temperature and relative humidity in order to prevent the formation of condensation and ensure that bathers feel no discomfort. There are basically two different scenarios:

1.- If the temperature and humidity are low, swimmers coming out of the water will feel cold due to the combined effect of the low temperature, the water being evaporated off their skin and the latent heat lost as a consequence.

2.-If the temperature and humidity are high, the effect is the opposite; swimmers will feel stifled because the high temperature prevents the water from being properly evaporated off the body.

To overcome these issues in indoor pools, dehumidifiers are essential for controlling humidity and the ambient temperature of the facility.

They ensure the following standard settings are maintained:

– A constant relative humidity in the reference range of between 60 and 65%.

– Air temperature in the reference range of 2 ºC above the temperature in water of up to a maximum of 30 ºC.

The cooling circuit built in to all dehumidifiers extracts all of the humidity from the ambient air, which is subsequently heated so that it can be returned to the pool enclosure in an optimum state.

There are two types of dehumidifiers:

Dehumidification units that are designed for small facilities. They should preferably be placed in the same enclosure as the pool or optionally in an adjoining machine room. Their main characteristic is that they do not require any ducts to be fitted to them. All they need is a socket-outlet and a drain.

Dehumidification stations that make maximum energy savings as they use the energy left over from heating your pool water or the air in the pool enclosure. They can also renew the air by taking advantage of optimum humidity and temperature conditions through recovery or free-cooling systems, which have three motor-driven grille for exchanging indoor and outdoor air. This ensures that at least 10% of the air in the pool enclosure is renewed, thus achieving optimum ambient conditions.