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Pool Dehumidification Calculator

Indoor pool evaporation and dehumidification capacity calculation. With condensing duct-type and wall-mounted technology recommendations.

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What is the Pool Dehumidification Calculator?

The pool dehumidification calculator determines the evaporation rate and required dehumidification capacity for indoor swimming pools. Evaporation formulas compliant with ASHRAE and VDI 2089 standards are used.

The evaporation calculation is based on: E = A × σ × (p_w − p_a) × F_a. Parameters include pool surface area, water temperature, air temperature, target relative humidity, and usage intensity. Different activity factors apply for competition, training, hotel, and therapeutic pool types.

Upon calculation, the tool recommends condensing and desiccant dehumidification technologies suited to the required capacity. A 24-hour energy profile and annual energy cost analysis are also provided.

Additional features such as pool cover usage, spectator area, and wave pool characteristics are included in the evaporation calculation.

Applications

  • Indoor swimming pools
  • Hotel and resort pools
  • Thermal spa and wellness centers
  • Municipal sports facilities
  • Aquaparks and water parks
ACADEMY

Articles related to this calculator

In-depth content to support your engineering decision after completing the calculation.

Effective Humidity Control in Swimming Pools: How Dehumidifiers Make a Difference
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Effective Humidity Control in Swimming Pools: How Dehumidifiers Make a Difference

Pool dehumidifiers are a fundamental component of creating a sustainable and healthy atmosphere in indoor pool environments.

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Dehumidifier Integration and Dew Point Management for Optimal Surface Quality in Ice Rinks
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Dehumidifier Integration and Dew Point Management for Optimal Surface Quality in Ice Rinks

Indoor ice skating rinks and hockey arenas are facilities that require specialized air conditioning design not only in terms of cooling, but also in moisture removal.

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How to Select an Industrial Dehumidifier: Engineering Criteria
Technical Article

How to Select an Industrial Dehumidifier: Engineering Criteria

Selecting an industrial dehumidifier is a multi-variable engineering decision. This guide covers the key criteria — target RH and dew point, technology, regeneration energy, housing and automation.

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GLOSSARY

Technical terms used in this tool

Access concise ASHRAE-referenced definitions of technical concepts you encounter in the calculation.

Relative Humidity (RH)Dew PointMoisture LoadLatent HeatCondensation DehumidificationAdsorptionEvaporator CoilAbsolute Humidity

Frequently Asked Questions

What does the pool dehumidification calculator compute?
It calculates the water evaporation rate from the pool surface and the required equipment capacity to remove this moisture. Provides condensing and desiccant technology recommendations with sectoral application notes.
Which standards are used?
Evaporation formulas from ASHRAE Applications Handbook and VDI 2089 standards are used. Activity factors are applied based on pool type and usage intensity.
How much does a pool cover reduce evaporation?
A pool cover can reduce evaporation by 50-70% during unused hours. The calculator creates a 24-hour profile considering cover usage time.
How is energy cost calculated?
Annual energy cost is calculated using the recommended device actual power consumption, 24-hour operating profile, and electricity unit price.
What is the ideal humidity level for indoor pools?
Recommended relative humidity for indoor pools is 50-60%. Air temperature 2-3°C above water temperature prevents condensation and ensures comfort.
Are wave pool and spectator area included?
Yes, evaporation rate increases by 1.5x when wave pool is active. Spectator area volume is also added to total moisture load.

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Calculations represent approximate values. Detailed analysis is required for final engineering designs.