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What is mean by economiser recirculation line?
Since sufficient feedwater is not supplied into the economizer though the heat is absorbed from flue gas at the boiler start-up and low load operation, steaming may occur in the economizer. Therefore the economizer recirculation line is provided between the furnace downcomer and the economizer inlet feedwater piping. This line provides the recirculation flow between the drum, the downcomer and the economizer so as to prevent steaming in the economizer. Economizer recirculation valve is only opened at initial stage of the boiler start-up.
What is Ik pass in a boiler?
An IK on a boiler is a Soot Blow. It is mounted on the sidewall of a boiler furnace and cleans the internal boiler parts with high pressure.
What is an atmospheric boiler?
ATMOSPHERIC BOILERa boiler on which combustion air/flue gases are drawn through the boiler without a fan.(Taken directly from the Crown Boiler Co. web-site.)
Who is the patron saint of boiler makers?
The patron saint of boiler makers is St. Eligius.
What is AQC boiler?
It is a type of boiler that you can use in your business. There are many different types that you can choose from.
What is the purpose of a boiler economiser?
enviromental pollution control
What is function of economizer in boiler?
Basically . economiser is located in between exit of boiler and entry of air preheater. when the flue gases are coming out from boiler they take away a lot of heat. economiser utilize this heat from flue gases. and these heat is used to heat the feed water which is going to feed the bolier. hence by using economiser the coal consumption required to heat the feed water is reduced hence cost reduced.
What is the Function of economizer in boilers?
Basically . economiser is located in between exit of boiler and entry of air preheater. when the flue gases are coming out from boiler they take away a lot of heat. economiser utilize this heat from flue gases. and these heat is used to heat the feed water which is going to feed the bolier. hence by using economiser the coal consumption required to heat the feed water is reduced hence cost reduced.
Difference between boiler mountings and accessories?
Boiler mountings are different fittings and devices which are necessary for the operation and safety of a boiler .e.g. pressure gauge, safety valves , steam stop valve etc Normally these device are mounted over boiler shell .Boiler Accessories are auxilary plants or parts required for steam boilers for their proper operation and to increase efficiency of the boiler .e.g.feed pumps, super heater , economiser etc
What is the use of economiser in boiler?
The economizer is used to raise feedwater temperature up to nearly the temperature of the boiler to avoid thermal shock and improve the boiler's efficiency. Every 11 degrees Fahrenheit increase in feedwater temperature yields a 1% increase in boiler efficiency.
Why economiser is used in boiler?
An economizer is used to heat boiler feedwater up closer to the temperature of the boiler water, using heat from the boiler exhaust gases, heat that would otherwise be wasted. The main reason is to improve the efficiency of the boiler. For every 44 degree F drop in exhaust gas temp. there is an 11 F rise in feedwater temperature and a 1% gain in boiler efficiency.
What is the purpose of a bypass on an industrial boiler economiser?
If the boiler fuel contains Sulphur (and most do) combustion products in the flue gas will include Oxides of Sulphur (SO2 and SO3). SO3 combines with water (H2O) to make Sulphuric Acid (H2SO4). If the temperature of the flue gas falls below the dew point, the combination of the acid with the moisture in the flue gas causes corrosion of the flue gas duct work. Bypassing the economiser in the early stages of a boiler start keeps the flue gas temperature above the dew point.
What is economiser in boiler?
In boilers, economizers are heat exchange devices that heat fluids, usually water, up to but not normally beyond the boiling point of that fluid. Economizers are so named because they can make use of the enthalpy in fluid streams that are hot, but not hot enough to be used in a boiler, thereby recovering more useful enthalpy and improving the boiler's efficiency. They are a device fitted to a boiler which saves energy by using the exhaust gases from the boiler to preheat the cold water used to fill it (the feed water).
What is Lancashire boiler?
The Lancashire boiler comprised a large steel shell usually between 5 - 9 m long through which passed two large-bore furnace tubes called flues. Part of each flue was corrugated to take up the expansion when the boiler became hot, and to prevent collapse under pressure. A furnace was installed at the entrance to each flue, at the front end of the boiler. Typically, the furnace would be arranged to burn coal, being either manually or automatically stoked. The hot gaseous products of combustion passed from the furnace through the large-bore corrugated flues. Heat from the hot flue gases was transferred into the water surrounding these flues. The boiler was in a brickwork setting which was arranged to duct the hot gases emerging from the flues downwards and beneath the boiler, transferring heat through the bottom of the boiler shell, and secondly back along the sides of the boiler before exiting through the stack. These two side ducts met at the back of the boiler and fed into the chimney. These passes were an attempt to extract the maximum amount of energy from the hot product gases before they were released to atmosphere. Later, the efficiency was improved by the addition of an economiser. The gas stream, after the third pass, passed through the economiser into the chimney. The economiser heated the feedwater and resulted in an improvement in thermal efficiency. One of the disadvantages of the Lancashire boiler was that repeated heating and cooling of the boiler, with the resultant expansion and contraction that occurred, upset the brickwork setting and ducting. This resulted in the infiltration of air, which upset the furnace draught. These boilers would now be very expensive to produce, due to the large amounts of material used and the labour required to build the brick setting.
What is function of economiser?
An economiser is a heat recovery device used in industrial processes, particularly in boilers and power plants, to improve energy efficiency. It captures waste heat from flue gases and uses it to preheat water before it enters the boiler, reducing fuel consumption and enhancing overall system efficiency. By maximizing the use of waste heat, economisers lower operational costs and decrease greenhouse gas emissions.
Where can one find boiler servicing?
There are a number of references to use to find boiler servicing. For example, Service Experts, Inferno Boiler, and Boiler all provide useful information about boiler servicing.
When will be Boiler operation engineer exam conducted in tamilnadu?
The Boiler operation engineer exam information can be found by contacting the nearest state boiler and labor director office for details. When he state and government decide to announce the information is available.
