2013/3/14 · Why economiser is used in boiler? An economizer is used to heat boiler feedwater up closer to the temperature of the boiler water, using …Get Price
Why economiser is used in chiller? An economizer is a type of sub-cooler that uses part of the total refrigerant flow from the condenser to cool the rest of the refrigerant flow (see Figure 10.13). The cold gas from the economizer can also be used to provide extra cooling for the compressor.Get Price
2020/11/27 · Economizer is an indispensable part of modern boilers. Its function is to use the heat of the flue gas at the tail of the boiler to heat the boiler feed water and reduce the heat loss of exhaust gas. H type fin tube waste heat recovery device (also called economizer) TheGet Price
2020/5/12 · If the boiler contains an economiser & superheater is considered a single unit, then the efficiency is termed as the overall efficiency of the boiler. Boiler Power The American Society of Mechanical Engineers (ASME) has recommended that one boiler horsepower is equivalent to evaporation of 15653 kg of water per hour from and at 100° C.Get Price
2012/2/24 · An economiser is a mechanical device which is used as a heat exchanger by preheating a fluid to reduce energy consumption. In a steam boiler, it is a heat ex-changer device that heats up fluids or recovers residual heat from the combustion product i.e. flue gases in thermal power plant before being released through the chimney.Get Price
Start studying Chapter 9 - Introduction to Process Technology Equipment & Systems. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The main components of a water tube boiler are the furnace, the tubes, the drums, the gas/oil Get Price
Fusible Plug is a fitting used in steam boilers to enhance the safety during operation. It's working depends upon the water level in the Boiler shell. A Fusible Plug is a threaded metallic cylindrical object, with a tapered hole in it which goes through its entire length.Get Price
Answer: During the initial startup of the boiler, the amount of water entering the economiser inlet is very less .This is because during startup only the 30 percent line will be supplying feedwater to the economiser.And this water is not sufficient enough to take up theGet Price
2019/8/19 · In this article, we are going to discover what an industrial boiler is, and how it works. But first, let us consider the term heat. Heat is vital in everyone's day to day lives. Whether it be heat to warm up our surroundings, or heat to be able to cook food, we all use it toGet Price
Operating Instructions for Exhaust Gas Boiler/Economiser These operating advices are not intended to be a comprehensive procedure, but merely an aide-memoire. The actual manufacturer's instructions coupled with practical on-board experience will determine the actual sequence to be followed.Get Price
2012/2/24 · Boiler economizer is a device that uses a portion this remained energy of the flue gas to heat up inlet water (feed water) to the boiler. Since the heat energy is given to the water before it gets fed to the boiler, the requirement of fuel for producing steam is optimized. Because of that, we call this device as an economizer.Get Price
2010/11/26 · Marine boilers are usually of the two-drum water-tube type with water cooled furnaces and heat recovery equipment of the economizer or air-heater type. The majority of ships are fitted with two boilers, although some large passenger ships may have three or more. Thanks a lot. A boiler is defined as "a closed vessel in which water or other Get Price
Why is an economizer used in a boiler? - Quora Nov 22, 2018 · Boiler Economizer ( also know as Economizer ) is the Energy improving device that helps to reduce the cost of operation by saving the fuel. The economizer in Boiler tends to make the system moreGet Price
2009/7/13 · Heat Recovery Steam Generators - HRSG,s are an important part of the Combined Cycle Plant. How is it different from the combustion boilers? Some of the main differences are given in this article. Heat Recovery Steam Generator's (HRSG's) are waste heat boilers. The steam turbine or a downstream process uses the steam. The term HRSG refers …Get Price
2015/12/9 · Exhaust gas boiler (EGB or EGE) or economiser described in this article is a smoke tube boiler with steam space, used for heat recovery from main engine exhaust gas. An illustration of the boiler is shown in figure below. The exhaust gas boiler is designed as a vertical boiler with a cylindrical shell surrounding the boiler tubes and water drum Get Price
at a working pressure of 4-5 kg/cm2. Generally pet-coke is used as the fuel for the steam boiler. The heating chamber consists of a fluidized bed of coke wherein air is supplied from bottom. The heat generated by combustion of coke and air is used to heat water toGet Price
2016/2/8 · Boiler Accessories: These are the devices which are used as integral parts of a boiler and help in running efficiently. Feed pump Super heater Economiser Air Preheater Injector Accessories Descriptions: 1. Feed pump It is used to deliver water to the boiler. A Get Price
Answer: Soot blowers are used in the AFBC boiler too. Without soot blowers it is not possible to remove the soot deposited over the superheater tubes, economiser and APH (Depends on the design) tubes. In AFBC Boilers, Long retractable soot blowers are used inGet Price
Chapter 14 - Boiler System Failures. Deaerator Cracking. Feedwater Line Erosion. Economizer Tubes. Failures Due to Overheating. Failures Due to Corrosion. Successful, reliable operation of steam generation equipment requires the application of the best available methods to prevent scale and corrosion.Get Price
Answer (1 of 2): it is to warm the feed water (the water that is being fed into the boiler and that is turned into steam to do some kind of work) heating the feed water from (lets say) 10 C in the supply line (or locomotion tender) to the boiling point (higher then 100 C dueGet Price
Why is phosphate dosing done in a boiler? – Quora Trisodium Phosphate dosing is done in boiler drum which react with scale forming salts like calcium cloride,calcium sulphate. 3 cacl2 + 2 na3 po4 = ca3 (po4)2 +6 nacl the sludge collected in bottom header which Get Price
Proper treatment of boiler feedwater effectively protects against corrosion of feedwater heaters, economizers, and deaerators. The ASME Consensus for Industrial Boilers (see Chapter 13) specifies maximum levels of contaminants for corrosion and deposition control in boiler systems. The consensus is that feedwater oxygen, iron, and copper Get Price
Operating Instructions for Exhaust Gas Boiler/Economiser These operating advices are not intended to be a comprehensive procedure, but merely an aide-memoire. The actual manufacturer's instructions coupled with practical on-board experience will determine the actual sequence to be followed.Get Price
Why is an economiser used in a boiler? - Quora As the name may imply, the Economizer is a device built into a boiler to help improve the economy of the boiler. The water heading into the boiler has typically been preheated by some steam flow that was extractedGet Price
2019/11/27 · In the boiler room, efficiency improvements can be found by many sources, however, a common option for energy savings includes the use of an economizer. What is an economizer? The economizer is a fabricated assembly of finned tubing that captures waste heat extracted from the boiler's stack flue gases; the exhaust that leaves the boiler stack (or "flue").Get Price
2021/4/17 · An economizer is a mechanical device used to reduce energy consumption to perform a useful function. Economizers recycle energy produced within a system such that it captures the heat of the flue gas and transfers it to the feed water in a boiler, it uses part of the total refrigerant flow from the condenser to cool the rest of the refrigerant flow, etc.Get Price
2017/4/14 · Economizers are mechanical devices intended to reduce energy consumption or perform a useful function such as preheating a fluid. In basic terms, an economizer is a heat exchanger. The orientation of an economizer can be vertical, horizontal, or cylindrical depending on boiler size and space available, and it is fitted directly to the boiler Get Price
2017/4/14 · Economizers are mechanical devices intended to reduce energy consumption or perform a useful function such as preheating a fluid. In basic terms, an economizer is a heat exchanger. The orientation of an economizer can be …Get Price
Economisers. The flue gases, having passed through the main boiler and the superheater, will still be hot. The energy in these flue gases can be used to improve the thermal efficiency of the boiler. To achieve this the flue gases are passed through an economiser. The economiser is a heat exchanger through which the feedwater is pumped.Get Price
In watertube boilers, boiler water passes through the tubes while the exhaust gases remain in the shell side, passing over the tube surfaces. Because tubes can typically withstand higher internal pressure than the large chamber shell in a firetube, watertube boilers are used where high steam pressures (3,000 psi, sometimes higher) are required.Get Price
292 Chapter 14 Stack—an opening at the top of the boiler that is used to remove flue gas, p. 297. Steam drum—the top drum of a boiler where all of the generated steam is collected before entering the distribution system, p. 293.Steam trap—a device used to remove condensate or liquid from steam systems, p. 294. Get Price
watertube boiler, in order to prevent flue gas leakage a) an induced draft fan is incorporated b) smoke stacks are made taller c) an economizer is used d) a steel casing forms a seal for the furnace e) sootblowers cannot be usedGet Price
When economizers are used to heat boiler feedwater, every 10 F rise in feedwater temperature is accompanied by a ___% savings in fuel. the boiler's main steam stop valves, feedwater lines, and bottom blowdown lines be closed, locked, and tagged outGet Price
In watertube boilers, boiler water passes through the tubes while the exhaust gases remain in the shell side, passing over the tube surfaces. Because tubes can typically withstand higher internal pressure than the large chamber shell in a firetube, watertube boilers are used where high steam pressures (3,000 psi, sometimes higher) are required.Get Price
Answer (1 of 7): Economiser is a boiler accessory which is used to improve its efficiency. It is gemerally a heat exchanging device with tubes to carry feed water. Function: it preheats the water before it enters the boiler upto a temperature below boiling point.Get Price
By capturing the waste heat in the flue gas with an economiser and diverting it to pre-heat the steam boiler feed water, the boiler thermal efficiency can be increased to as much as 95%. Improving thermal efficiency cuts fuel consumption resulting in significant cost savings often in the region of 4-6% p.a.Get Price
2015/5/12 · Economizer is the power plant accessory/equipment which use the heat of exhaust steam to raise the temperature of incoming water in the boiler. It increases the efficiency of plant. Economiser is a heat-exchanger between Air-pre-Heater & Primary-superheater,situated on the2nd pass of the water-tube boiler. After coal combustion in furnace zone Get Price