Swimming Pools Dehumidification Calculation Sheet

# Swimming Pools Dehumidification Calculation Sheet

To calculate dehumidification load we have to calculate evaporation from indoor pool surface ,moisture from outside ventilation air and moisture from occupants .

1-from handbook can take evaporation rate from activity factor (AF) depend on application residential or hotel or, ..etc

2- evaporation rate factor (ERF) depend on swimming pool water temperature and air temperature (lb/hr.sq ft)

3- determine pool area in (sq .ft)

4- then can calculate evaporation rate (lb/hr) = ERF lb/hr. sq ft X AF X pool area

5- ventilation moisture = [CFM oa x (grains oa - grains return)]/

6- recommended ACH 4-8 for outside air7- for one person calculate btu/ hr latent heat load and calculate enthalpy h(lb/hr).

## Swimming Pools Dehumidification Calculation Sheet

Factors are used in calculating evaporation from the swimming pool:
• Water temperature
• Air temperature
• Air relative humidity
• Pool area
• Saturation vapor pressure taken at surface water temperature
• Saturation pressure at dew point
• Level of activity in the pool