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  2. Renewable heat - Wikipedia

    en.wikipedia.org/wiki/Renewable_heat

    A well insulated furnace radiates little heat. Thus heat must be extracted instead from the exhaust gas duct. Heat absorption efficiencies are higher when the heat-exchange duct is longer, and when the flow of exhaust gas is slower. In many designs, the heat-exchange duct is built of a very large mass of heat-absorbing brick or stone.

  3. Forced-air - Wikipedia

    en.wikipedia.org/wiki/Forced-air

    Combines hydronic (hot water) heating with a forced air delivery; Heat is produced via combustion of fuel (gas/propane/oil) in a boiler; A heat exchanger (hydronic coil) is placed in the air handler similar to the refrigerant coil in a Heat Pump system or a Central AC. Copper is often specified in supply and return manifolds and in tube coils.

  4. Central heating - Wikipedia

    en.wikipedia.org/wiki/Central_heating

    Institutional heating systems (office buildings or schools, for example) can use low-grade, inexpensive bunker fuel to run their heating plants, but capital cost is high compared to more easily managed liquid fuels. Natural gas is a widespread heating fuel in North America and northern Europe. Gas burners are automatically controlled and ...

  5. Forced-air gas - Wikipedia

    en.wikipedia.org/wiki/Forced-air_gas

    Each room has an outlet from the duct system, often mounted in the floor or low on the wall – some rooms will also have an opening into the cold air return duct. Depending on the age of the system, forced-air gas furnaces use either a pilot light or a solid-state ignition system (spark or hot surface ignition) to light the natural gas burner. [3]

  6. The campaign to ban gas stoves is heating up - AOL

    www.aol.com/news/campaign-ban-gas-stoves-heating...

    They argue that — unlike burgeoning technologies like a green power grid and electric vehicles — clean alternatives to gas heaters, appliances and stoves are readily available to most consumers.

  7. Heating system - Wikipedia

    en.wikipedia.org/wiki/Heating_system

    Central heating systems: These systems produce heat in one central location and distribute it throughout the building. This category includes furnaces, boilers, and heat pumps. [1] [2] Distributed heating systems: These systems generate heat in the space they are to heat, without extensive duct systems. Examples include electric space heaters ...

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