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Pool Dehumidification - preventing condensation, corrosion and reduce building energy requirements Natatorium designs provide the system designer with a multitude of choices in regards to the mechanical system. Pools need to be temperature and humidity controlled, in order to preserve comfort for the occupants, and to reduce condensation form forming on the building structure which results in corrosion, mold, mildew, and the decay of the structure. We aren't here to tell you how to design your natatorium, but these are key items you needs to know, in order to design a functional pool space, which negates the potential pitfalls historically found in pool design. Please contact an Applied Systems sales engineer for a more complete system evaluation by clicking here Why dehumidify? The moisture released by the pool, and adsorbed by the air needs to go somewhere. Given the warm temperature of the air, it will hold a tremendous amount of moisture and the dew point will rise to levels that promote condensation on the structure. The condensation will result in rust, mold and mildew of the internal surfaces, in addition to being uncomfortable for swimmers and observers in the space. What you need to know What factors are important to know, before select ing a mechanical system to control space humidity?
Some givens:
Other considerations not discussed here:
What are your mechanical options? Exhaust the space - just pull the space negative and allow replacement air to be drawn into the space or through a make up air system. This is the down and dirty system, but doesn't work in many climates, in the Pacific Northwest, it does work if properly designed. If this is your option, click here for fan data Exhaust with Make Up- keeping the space slightly negative, but providing tempered air air to keep the doors on the hinges. The Make up air unit will typically provide filtered and heated air to the space. You could look here for basics on a make up air unit Exhaust with Make Up Air and Heat Recovery- In the Northwest, this is one of the most common approaches. Our outside is dry enough, that with enough flow, we can completely dehumidify the space with outside air, but we waste all the heat in the exhaust air. Using heat recovery you can recapture around 60-80% of the energy in the exhaust airstream. Further options can provide a complete HVAC system. You can learn more by clicking here for our ventilation based page. You can visit each of the heat recovery sub-pages from this page, heat recovery Mechanical Dehumidification / Refrigeration - Perhaps the most understood means of dehumidification means, mechanical refrigeration. Using a DX refrigeration system, the air temperature is lowered until vapor condenses on the cold coil surface, the air cooled more, resulting in dehumidification. These systems will typically feature hot gas re-heat and a pool heating option, so that the waste heat of the compressor cycle can be used to reheat the supply air and then additional heat can be transferred into the pool water itself. To learn more, visit our Mechanical Dehumidification webpage by clicking here Desiccant Dehumidification - Utilizing a common desiccant dehumidifier for a pool is an obvious consideration, The sorption process is highly effective for moisture removal and results in a warm supply air temperature. To learn more, click here for our desiccant dehumidification page Materials of construction, recommendations:
Pool materials test, click to enlarge The options are far and wide, not sure which way to turn? contact an Applied Systems sales engineer for a more complete system evaluation by clicking here |
Just a few examples of what you don't want to see happen to you building | ||||||||||||||||||||||||||||||||||||||||
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