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Pool mechanical systems




Swimming pool buildings aree notoriously difficult to air-condition bесаuse they are saturated with humidity. Water can condense on any cold surface-ducts, windows and curtain-wall system, roof: decking-causing drops, corrosion, and, in the winter, falling ice. For the Goodwill Games complex the architect used a system designed especially for swimming pool buildings to reduce humidity and recover energy from heated air. Water condenses in units located near the celling of the building; the heat recovered during the condensation process is circulated to the basement and run through a heat exchanger to preheat the pool water. Air inside the building is constantly circulated not only to ensure that most air reaches the condensers but also to avoid the build-up of chlorine fumes.

 

Water flows to gutters around the pool perimeter, where trash is caught by cover grates, and continues on to a primary filter made of stainless-steel mesh that, collects any other large matter It is then run under high pressure through tanks filled with sand and treated with chlorine tablets the size of hockey pucks before being returned to the pool. (Tablets are easier to handle than liquid chlorine which also has a limited shelf life.)

 

The racing section of the pool is 25 meters wide by 53 meter long and can be divided into any number of configurations for different programs. To divide the pool, there are one by 25 meter movable bulkheads-made of large metal and fiberglass tanks that span the pool and rest on the gutters- can be towed into place by two people using ropes on each end.

 

The shallow end of the pool is covered by a nine-by-25-meter fiberglass platform. Scissor jacks beneath the floor can raise or lower this end of the pool in a matter of minutes, using a shaft fitted with worm gear and driven by two synchronized motors inside the pool equipment room. The floor can be used in manу ways; people in submersible wheelchairs, for example, can enter the pool at one height and then be lowered to another level for their activities. For safety's sake, the changing depth of this portion of the pool is indicated by an electronic display board mounted on a nearby wall.

 






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