Central Heat
Furnaces
Most of North American households rely on a central furnace
to supply heat. Furnace works by blowing heated air through ducts that carry
the hot air to rooms all over the home via air registers or grills. This kind
of heating system is called a ducted warm-air system. It can be motorized by
electricity, natural gas, or any fuel oil.
Inside furnace, the fuel is merge with air and burned. The
flames warm a metal heat exchanger where the heat is converted to air. Air is forced
through the heat exchanger by the “air handler’s” furnace fan and then forced
through the ductwork downstream of the heat exchanger. At the furnace, burning
products are vented out of the building through a flue pipe. Condensing”
furnaces are made to regain much of this escaping heat by cooling exhaust gases
well below 140°F, where water vapor in the exhaust condense into water. This is
the main feature of a high-efficiency furnace (or boiler). These classically
vent through a sidewall with a plastic pipe.
The currently furnace have not been updated since 1987. New
furnace principles are presently under development by the U.S. Department of
Energy.
Hello, my name is Jack Sparrow. I'm a 50 year old self-employed Pirate from the Caribbean.
No comments:
Post a Comment