A chimney may be a structure that provides ventilation for decent flue gases or smoke from a boiler, stove, chamber or hearth to the surface atmosphere. Chimneys are generally vertical, or as close to as attainable to vertical, to make sure that the gases flow swimmingly drawing air into the combustion in what is called the stack, or chimney, effect. The area within a chimney is named a flue. Chimneys are also found in buildings, steam locomotives and ships. in the USA, the term stack (colloquially, stack) is additionally used once concerning locomotive chimneys or ship chimneys, and therefore the term funnel may be used. Self-supported type chimneys may be provided suiting the boiler size. These can be designed and manufactured as per IS-6533 standard to ensure compliance.
4 MAJOR ADVANTAGES OF AIR PREHEATER IN BOILER: 1.Increased thermal efficiency 2. Short payback period & increased combustion rate 3. In the case of combustion of pulverized coal hot air can be used for drying the coal as well as for burning the coal efficiently 4. All standard fuels and even lower grades of coals can be burnt efficiently with hot air Thermodyne Boilers is a successful manufacturing the Boiler accessories like Air Preheaters, Economizers, Superheaters etc.
Galvanic corrosion occurs by electrical coupling of dissimilar metals or alloys. CAUSES OF GALVANIC CORROSION IN BOILER Scratches on the metal surfaceDifferential stresses in metalsConductive deposits on boiler surfaceAcid cleaning of the boiler
A combi boiler or combination boiler is the most commonly used boiler in India. Combi Boiler is a unique membrane design water wall type boiler which combines the advantages of both water tube & smoke tube steam boilers. A combination type of steam boiler is the one which has the operational characteristics of both smoke tube and water tube steam boiler respectively. Unlike the packaged type Boilers, here the furnace is external to the boiler shell. During its operation, the combustion takes place in the water wall so the flue gases from here travel through this membrane (as in a Water Tube Boiler) and enter the Boiler shell. Now the flue gases travel in the smoke tubes (as in a Smoke Tube Boiler) During its course of motion, it transfers heat to the – Water present in the tubes in the Water Wall MembraneWater present in the Boiler shell through tubesThis type of steam boiler offers the high degree of reliability and trouble-free operation. They effectively operate at moderately hig…