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  2. Ondol - Wikipedia

    en.wikipedia.org/wiki/Ondol

    Wright introduced floor heating to American houses in the US in the 1930s. [7] Instead of ondol-hydronic radiant floor heating, modern-day houses such as high-rise apartments have a modernized version of the ondol system. Many architects know the advantages and benefits of ondol, and they are using ondol in modern houses.

  3. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    Sealed systems offer an alternative to open-vent systems, in which steam can escape from the system, and gets replaced from the building's water supply via a feed and central storage system. Heating systems in the United Kingdom and in other parts of Europe commonly combine the needs of space heating with domestic hot-water heating.

  4. Furnace (central heating) - Wikipedia

    en.wikipedia.org/wiki/Furnace_(central_heating)

    Air convection heating systems have been in use for over a century. Older systems rely on a passive air circulation system where the greater density of cooler air causes it to sink into the furnace area below, through air return registers in the floor, and the lesser density of warmed air causes it to rise in the ductwork; the two forces acting ...

  5. Underfloor heating - Wikipedia

    en.wikipedia.org/wiki/Underfloor_heating

    Electric underfloor heating systems cause low frequency magnetic fields (in the 50–60 Hz range), old 1-wire systems much more so than modern 2-wire systems. [49] [50] The International Agency for Research on Cancer (IARC) has classified static and low-frequency magnetic fields as possibly carcinogenic (Group 2B). [51]

  6. Hydronics - Wikipedia

    en.wikipedia.org/wiki/Hydronics

    Hydronics (from Ancient Greek hydro- 'water') is the use of liquid water or gaseous water or a water solution (usually glycol with water) as a heat-transfer medium in heating and cooling systems. [ 1 ] [ 2 ] The name differentiates such systems from oil and refrigerant systems.

  7. Heat a frigid Troy apartment with a space heater or kitchen ...

    www.aol.com/heat-frigid-troy-apartment-space...

    A luxury apartment complex in Troy displayed an "Open House" sign offering tours on Jan. 18, 2024, despite having had little or no heat all week, and during a time when the city had declared the ...

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