What is the purpose of economizer in water tube boiler?

Economizers are heat exchangers that transfer the heat in the flue gas to another medium‚ generally the boiler feed-water‚ although other streams are sometimes used such as make-up water.

How does a boiler economizer system work?

How does it Work? In a boiler system, an economizer captures the heat of the flue gas and transfers it to the feed water. As the flue gas exits the boiler, it enters an economizer with finned tubes. The finned tubes absorb the heat and raises the temperature of the boiler feed water, lowering the needed energy input.

What is the purpose of economizer?

An economizer is a mechanical device used to reduce energy consumption. Economizers recycle energy produced within a system or leverage environmental temperature differences to achieve efficiency improvements.

Where economizer is located in boiler?

10.6 Economizers. Economizers are installed in the exhaust gas flow from the boiler. They take heat from the flue gases which they transfer via extended surface elements to the feedwater immediately prior to the water entering the boiler.

Is economizer a heat exchanger?

An economizer is a type of heat exchanger that recovers heat from flue gasses to preheat fluids or puts it to use in another part of the production process. This recovery process saves on fuel consumption and costs, as well as it reduces the CO2 emission.

Is generally placed after the economizer?

Air Preheater: It is used to increase the temperature of the air before it enters the furnace. It is generally placed after the economizer; so that the flue gases pass through the economizer and then to the air preheater.

Which of the following is a low pressure boiler *?

Explanation: Boilers with production of steam below 80 bar of pressure are call low pressure boilers. Lancashire boiler is a low pressure boiler while the rest of given options are high pressure boilers. 7.

What is the function of economizer in boiler Mcq?

Explanation: Function of the economizer is to recover a portion of heat of the exhaust gases before the flue gases enter the chimney and discharged to the atmosphere. Due to the high temperature of feed water, fuel consumption reduces. This increases the overall efficiency of the boiler.

What is generally placed after the economizer?

Air Preheater
Air Preheater: It is used to increase the temperature of the air before it enters the furnace. It is generally placed after the economizer; so that the flue gases pass through the economizer and then to the air preheater.

What is the major disadvantage of the Benson boilers?

Explanation: The major disadvantage of the Benson boiler is that when water transforms into steam in the convective section of the evaporator, salts are deposited in the transformation zone. Hence periodic flashing of evaporator tubes in the convective section is necessary.

What is economizer in boiler?

Boiler Economiser (Sometimes Called 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 more energy efficient. In boilers, economizers are generally Heat Exchangers which are designed to exchange heat with the fluid, generally water.

What is the difference between boiler economizers and exchangers?

In boilers, economizersare generally Heat Exchangerswhich are designed to exchange heat with the fluid, generally water. Boiler Economiser and Waste Heat Recovery Concept Boilersare generally designed to produce steam from water.

What is the function of economizer in steam power plant?

Economizers, in steam power plants, used to capture the waste heat from boiler flue gas and transfer it to the boiler feedwater. What are the types of economisers? There are two main types of economizers: non-condensing economizer and condensing economizer.

What are boiler economisers and their types?

Boiler Economiserscan be classified in various ways depending upon economizer’s function and operation. An economizercan be made pressurized or non-pressurized depending on the required water temperature through it. Thermodyne manufacturesboth Pressurized Economisersas well as non-pressurized Economisersto suit your needs.