Hot tubs and spa pools Swimming pool

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a home spa


hot tubs , spa pools common heated pools used relaxation , therapy. commercial spas common in swimming pool area or sauna area of health club or fitness centre, in men s clubs, women s clubs, motels , exclusive five-star hotel suites. spa clubs may have large pools, segmented increasing temperatures. in japan, men s clubs many spas of different size , temperature common. commercial spas made of concrete, mosaic tiled interior. more innovation of pre-form composite method mosaic tiles bonded shell enables commercial spas factory manufactured specification , delivered in 1 piece. hot tubs typically made wine barrel straight sides, wood such californian redwood held in place metal hoops. immersion of head not recommended in spas or hot tubs due potential risk of underwater entrapment pump suction forces. however, commercial installations in many countries must comply various safety standards reduce risk considerably.


home spas worldwide retail item in western countries since 1980s, , sold in dedicated spa stores, pool shops, department stores, internet, , catalog sales books. made heat-extruded acrylic sheet perspex, colored in marble look-alike patterns. exceed 6 m (65 sq ft) , typically 1 m (3 ft 3 in) deep, restricted availability of raw sheet sizes (typically manufactured in japan). there mid-depth seating or lounging system, , contoured lounger style reclining seats common. upmarket spas include various jet nozzles (massage, pulsating, etc.), drinks tray, lights, lcd flat-screen tv sets , other features make pool recreation center. due family-oriented nature, home spas operated 36 39 °c (97 102 °f). many pools incorporated in redwood or simulated wood surround, , termed portable may placed on patio rather sunken permanent location. portable spas shallow , narrow enough fit sideways through standard door , used inside room. low power electric immersion heaters common home spas.


whirlpool tubs first became popular in america during 1960s , 1970s. spa called jacuzzi in usa since word became generic after plumbing component manufacturer jacuzzi introduced spa whirlpool in 1968. air bubbles may introduced nozzles via air-bleed venturi pump combines cooler air incoming heated water cool pool if temperature rises uncomfortably high. spas have constant stream of bubbles fed via seating area of pool, or footwell area. more common temperature control device heated water comes natural (uncontrolled heat) geothermal source, rather artificially heated. water temperature warm hot — 38 42 °c (100 108 °f), bathers stay in 20 30 minutes. bromine or mineral sanitizers recommended sanitizers spas because chlorine dissipates @ high temperature thereby heightening strong chemical smell. ozone effective bactericide , commonly included in circulation system cartridge filtration, not sand media filtration due clogging problems turbid body fats.







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