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  2. Hot tub - Wikipedia

    en.wikipedia.org/wiki/Hot_tub

    The earliest hot tubs were calderas in which hot stones were placed to heat the water. [citation needed] Therma in Ikaria has been a very popular place particularly for hydrotherapy ever since the 4th century B.C. [2] The remains of wrecked marble bathtubs along with a prehistoric aqueduct that have been unearthed from this area bear ample testimony of the place's popularity in the ancient times.

  3. Ground-coupled heat exchanger - Wikipedia

    en.wikipedia.org/wiki/Ground-coupled_heat_exchanger

    However, the earth can be used to partially cool and dehumidify the replacement fresh air intake for passive-solar thermal buffer zone [5] areas like the laundry room, or a solarium / greenhouse, especially those with a hot tub, swim spa, or indoor swimming pool, where warm humid air is exhausted in the summer, and a supply of cooler drier ...

  4. Leaf blower - Wikipedia

    en.wikipedia.org/wiki/Leaf_blower

    A leaf blower, commonly known as a blower, is a device that propels air out of a nozzle to move debris such as leaves and grass cuttings. Leaf blowers are powered by electric or gasoline motors . Gasoline models have traditionally been two-stroke engines , but four-stroke engines were recently introduced to partially address air pollution concerns.

  5. Soot blower - Wikipedia

    en.wikipedia.org/wiki/Soot_blower

    Air Heater Blower; Rotating Element Sootblowers; Multi-Media Sootblowers; Fixed Rotating; Steam blowing medium: Steam; Air; High Pressure Water; Dual-media air heater; Steam is normally used as a medium for blowing away the soot since capital cost of steam pressure reducing equipment and drain is less than the cost of compressors, motors and ...

  6. Simone Biles dominates U.S. Classic, qualifies for national ...

    www.aol.com/sports/simone-biles-dominates-u...

    Simone Biles is officially back. The four-time Olympic gold medalist made her long-awaited return to competition on Saturday at the Core Hydration Classic at Hoffman Estates, Illinois, where her ...

  7. Roots Blower Company - Wikipedia

    en.wikipedia.org/wiki/Roots_Blower_Company

    In 1875, Roots exhibited a blower at the Saint Petersburg Exhibition; Thwaites and Carbutt exhibited a Roots principle "air blowing machine" for mine ventilation in the same exhibition. [6] In 1885, Edgar Dwight Johnston joined the firm of 30 people; he became vice president in 1889 and president in 1898, remaining so until at least 1931.