Abstract
The air relative humidity in closed spaces of indoor swimming pools influences significantly on users thermal comfort and the stability of the building structure, so its preservation on suitable level is very important. For this purpose, buildings are equipped with HVAC systems which provide adequate level of humidity. The selection of devices and their technical parameters is made using the mathematical models of water evaporation rate in the unoccupied and occupied indoor swimming pool. In the literature, there are many papers describing this phenomena but the results differ from each other. The aim of the study was the experimental verification of published models of evaporation rate in the pool. The tests carried out on a laboratory scale, using model of indoor swimming pool, measuring 99cm/68cm/22cm. The model was equipped with water spray installation with six nozzles to simulate conditions during the use of the swimming pool. The measurements were made for conditions of sports pools (water temperature 24°C) and recreational swimming pool (water temperature 34°C). According to the recommendations the air temperature was about 2°C higher than water temperature, and the relative humidity ranged from 40% to 55%. Models Shah and Biasin & Krumm were characterized by the best fit to the results of measurements on a laboratory scale.
Highlights
There has been increase in the number of pools, in Poland
Results of the measurements were compared with values of water evaporation rate calculated according to equations (4-21)
At high air and water temperatures the indicated equations show better fit to experimental data
Summary
There has been increase in the number of pools, in Poland. The new objects are usually indoor pools and they are built as aqua parks, recreational pools or swimming pools with additional attractions, so their offer is directed to wider community. The most important is calculation of vapor production, what is necessary to proper design of HVAC system. To dimension of HVAC systems, the mathematical models describing the evaporation of water in the occupied and unoccupied indoor swimming pools are used. There are many formulas for calculation the water evaporation rate in occupied and unoccupied swimming pools, but their results differ from each other [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18]. The aim of the study was experimental verification of published formulas for calculation the water evaporation rate in indoor swimming pools
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