Modeling mutual effects of evaporation, thermal sensation and concentration of chlorine contaminant in an indoor swimming pool

Due to high humidity, high air temperature and hazardous compounds including chlorine indoor swimming pools are called as ýunhealthy environment. Therefore, the pollutants’ concentration, relative humidity and thermal comfort conditions must be ýsimultaneously considered in designing the air conditioning systems of indoor swimming pools. In this study, a new approach has been ýpresented for concurrent modeling of water evaporation mechanism, chlorine concentration level, occupants’ thermal sensation and ýtemperature and velocity fields in a championship-size indoor swimming pool. In this regard, a new algorithm has been developed in ýorder to apply adaptive boundary conditions at water-air interface in the pool. In the mentioned pool, the air enters the environment ýthrough a linear ceiling diffuser at temperature of 35°C, relative humidity of 30% and air exchange rate of 4 times per hour. The results ýshow that the distribution of temperature, relative humidity and concentration of chlorine contaminant are significantly depending on the ýheight from the water surface. So, the volumetric average of relative humidity from the floor to 0.5m height is about 62%; while the ývolumetric average of relative humidity in the occupied zone is about 50%. Moreover, results indicate that in the distance of floor to 0.5m ýheight, the mean value of chlorine’s concentration is about 60% larger than its mean value in the occupied zone. Also, the temperature ýfield and distribution of thermal comfort index are significantly dependent to the height.ý