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2. 10 Signs Your Heater Isn’t Working as Well as It Could (and ...

   www.aol.com/10-signs-heater-isn-t-200000044.html

   This could cause the heater to cycle on and off unnecessarily, leading to a waste of energy. Homeowners can fix these issues by adjusting the thermostat settings or investing in a new one ...

3. Furnace (central heating) - Wikipedia

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

   At the furnace, cool air passes into the furnace, usually through an air filter, through the blower, then through the heat exchanger of the furnace, whence it is blown throughout the building. One major advantage of this type of system is that it also enables easy installation of central air conditioning , simply by adding a cooling coil at the ...

4. Soot blower - Wikipedia

   en.wikipedia.org/wiki/Soot_blower

   A sootblower is a device for removing the soot that is deposited on the internal furnace tubes of a boiler during combustion to prevent plugging of the gas passes and maintain boiler efficiency. The world market leader is Clyde Bergemann Power Group. [citation needed]

5. Forced-air gas - Wikipedia

   en.wikipedia.org/wiki/Forced-air_gas

   Older furnaces sometimes relied on gravity instead of a blower to circulate air. [1]Gas-fired forced-air furnaces have a burner in the furnace fueled by natural gas.A blower forces cold air through a heat exchanger and then through duct-work that distributes the hot air through the building. [2]

6. Isothermal process - Wikipedia

   en.wikipedia.org/wiki/Isothermal_process

   An isothermal process is a type of thermodynamic process in which the temperature T of a system remains constant: ΔT = 0. This typically occurs when a system is in contact with an outside thermal reservoir, and a change in the system occurs slowly enough to allow the system to be continuously adjusted to the temperature of the reservoir through heat exchange (see quasi-equilibrium).

7. Open-hearth furnace - Wikipedia

   en.wikipedia.org/wiki/Open-hearth_furnace

   Tapping open hearth furnace, Fagersta steelmill, Sweden, 1967. Carl Wilhelm Siemens developed the Siemens regenerative furnace in the 1850s, and claimed in 1857 to be recovering enough heat to save 70–80% of the fuel. This furnace operates at a high temperature by using regenerative preheating of fuel and air for combustion. In regenerative ...