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  2. Radiant heating and cooling - Wikipedia

    en.wikipedia.org/wiki/Radiant_heating_and_cooling

    In Korea, the ondol system, meaning "warm stone," used flues beneath the floor to channel smoke from a kitchen stove, heating flat stones that radiated heat into the room above. Over time, the ondol system adapted to use coal and later transitioned to water-based systems in the 20th century, remaining a common heating system in Korean buildings.

  3. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    For hospital rooms with airborne contagions the CDC recommends a minimum of 12 ACH. [27] The challenges in facility ventilation are public unawareness, [28] [29] ineffective government oversight, poor building codes that are based on comfort levels, poor system operations, poor maintenance, and lack of transparency. [30]

  4. Thermal comfort - Wikipedia

    en.wikipedia.org/wiki/Thermal_comfort

    Thermal comfort is the condition of mind that expresses subjective satisfaction with the thermal environment. [1] ... The main rooms of concern are bathrooms and ...

  5. Mean radiant temperature - Wikipedia

    en.wikipedia.org/wiki/Mean_radiant_temperature

    The operative temperature, which is a more functional measure of thermal comfort in a building, is calculated from air temperature, mean radiant temperature and air speed. [6] Maintaining a balance between the operative temperature and the mean radiant temperature can create a more comfortable space. [ 7 ]

  6. Room air distribution - Wikipedia

    en.wikipedia.org/wiki/Room_air_distribution

    Displacement room airflow presents an opportunity to improve both the thermal comfort and indoor air quality (IAQ) of the occupied space. It also takes advantage of the difference in air density between an upper contaminated zone and a lower clean zone. Cool air is supplied at low velocity into the lower zone.

  7. The best recumbent exercise bikes of 2025, according to ...

    www.aol.com/lifestyle/best-recumbent-exercise...

    Plus, the lightweight design weighs just 65 pounds, and it has front wheels that make this bike a breeze to move from room to room. YOSUDA designed its bike with comfort and convenience in mind.

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    mail.aol.com

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  9. Room temperature - Wikipedia

    en.wikipedia.org/wiki/Room_temperature

    Room temperature, colloquially, denotes the range of air temperatures most people find comfortable indoors while dressed in typical clothing. Comfortable temperatures can be extended beyond this range depending on humidity , air circulation , and other factors.