Everyone turned to Marmaduke as he revved up his induced draft fan and filled the room with Ringelman # 5 smoke ".
2.
However, the condensing furnace is more expensive initially because of the extra induced draft fan and condensate pump required, and the extra heat exchanger in the firebox.
3.
For units over about 200 MW capacity, redundancy of key components is provided by installing duplicates of the forced and induced draft fans, air preheaters, and fly ash collectors.
4.
The induced draft fan assists the FD fan by drawing out combustible gases from the furnace, maintaining a slightly negative pressure in the furnace to avoid leakage of combustion products from the boiler casing.
5.
Fly ash is captured and removed from the flue gas by electrostatic precipitators or fabric bag filters ( or sometimes both ) located at the outlet of the furnace and before the induced draft fan.
6.
The furnace used a forced and induced draft fan to draw combustion air and exhaust gases through the combustion chamber at 1 / 3 of the speed of sound ( 100 m / s + ).
मोबाइल