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  2. Air preheater - Wikipedia

    en.wikipedia.org/wiki/Air_preheater

    The purpose of the air preheater is to recover the heat from the boiler flue gas which increases the thermal efficiency of the boiler by reducing the useful heat lost in the flue gas. As a consequence, the flue gases are also conveyed to the flue gas stack (or chimney ) at a lower temperature, allowing simplified design of the conveyance system ...

  3. Flue-gas stack - Wikipedia

    en.wikipedia.org/wiki/Flue-gas_stack

    A flue gas stack at GRES-2 Power Station in Ekibastuz, Kazakhstan, the tallest of its kind in the world (420 meters or 1,380 feet) [1]. A flue-gas stack, also known as a smoke stack, chimney stack or simply as a stack, is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air.

  4. Flued boiler - Wikipedia

    en.wikipedia.org/wiki/Flued_boiler

    In the flued boiler, any sediment fell past the furnace flue and settled out at the bottom of the boiler shell, where it had less effect. [ 5 ] In model engineering , the Cornish boiler, particularly when fitted with Galloway tubes ( see Lancashire Boiler, below ), is an excellent choice for gas-fired boilers and model steam boats.

  5. Flue - Wikipedia

    en.wikipedia.org/wiki/Flue

    A flue is a duct, pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater, boiler, or generator to the outdoors. Historically the term flue meant the chimney itself. [1] In the United States, they are also known as vents for boilers and as breeching for water heaters and modern

  6. Chimney - Wikipedia

    en.wikipedia.org/wiki/Chimney

    An H-style cap is a chimney top constructed from chimney pipes shaped like the letter H. It is an age-old method of regulating draft in situations where prevailing winds or turbulences cause downdraft and back-puffing. Although the H cap has a distinct advantage over most other downdraft caps, it fell out of favor because of its bulky design.

  7. Draft (boiler) - Wikipedia

    en.wikipedia.org/wiki/Draft_(boiler)

    In a water boiler, draft is the difference between atmospheric pressure and the pressure existing in the furnace or flue gas passage. [1] Draft can also be referred to as the difference in pressure in the combustion chamber area which results in the motion of the flue gases and the air flow.

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