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  2. Underfloor heating - Wikipedia

    en.wikipedia.org/wiki/Underfloor_heating

    There is a likelihood that underfloor heating may add to offgassing and sick building syndrome in an environment, particularly when the carpet is used as flooring. [citation needed] 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.

  3. Underfloor air distribution - Wikipedia

    en.wikipedia.org/wiki/Underfloor_air_distribution

    The ground floor with a slab on grade has less temperature rise compared to middle and top floors, and an increase of the supply air temperature causes a decrease in the temperature rise. The temperature rise is not significantly affected by the perimeter zone orientation, the internal heat gain and the window-to-wall ratio. [16]

  4. Ondol - Wikipedia

    en.wikipedia.org/wiki/Ondol

    In contrast to heaters, such as fireplaces or charcoal-based heaters that leave ash in the room, an ondol does not cause pollution in the room leaving it clean and warm. [9] [10] The ondol has some disadvantages. Mud and stones are the main materials that make up the ondol. Such materials take quite a long time to heat up, therefore the room ...

  5. Newton's law of cooling - Wikipedia

    en.wikipedia.org/wiki/Newton's_law_of_cooling

    This final simplest version of the law, given by Newton himself, was partly due to confusion in Newton's time between the concepts of heat and temperature, which would not be fully disentangled until much later. [3] In 2020, Maruyama and Moriya repeated Newton's experiments with modern apparatus, and they applied modern data reduction ...

  6. Heat recovery ventilation - Wikipedia

    en.wikipedia.org/wiki/Heat_recovery_ventilation

    An exhaust air heat pump (EAHP) extracts heat from the exhaust air of a building and transfers the heat to the supply air, hot tap water and/or hydronic heating system (underfloor heating, radiators). [27] [28] This requires at least mechanical exhaust but mechanical supply is optional; see mechanical ventilation. This type of heat pump ...

  7. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    A tempering valve mixes enough cold water with the hot water from the heater to keep the outgoing water temperature fixed at a more moderate temperature, often set to 50 °C (122 °F). Without a tempering valve, reduction of the water heater's setpoint temperature is the most direct way to reduce scalding.

  8. Automatic balancing valve - Wikipedia

    en.wikipedia.org/wiki/Automatic_balancing_valve

    A cooling or heating water distribution system is in balance when the flow in the whole system (through the component terminal lines, distributing lines and main distributing lines) corresponds to the flow rates that were specified for the design of the system. If the correct balancing of the system is not established, this will result in ...

  9. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    Circulating hot water can be used for central heating. Sometimes these systems are called hydronic heating systems. [22] Common components of a central heating system using water-circulation include: A supply of fuel, electric power or district heating supply lines; A boiler (or a heat exchanger for district heating) which heats water in the system

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