What is the importance of the two drums in a water tube boiler?
Water tube boilers have upper and lower drums connected by tubes. The upper drum is the steam drum, and the lower drum is the mud drum. Chemicals are added to the boiler feedwater that enters these drums in order to prevent fouling and corrosion.
Which boiler evaporator drum outside of boiler?
Water steam separator drum
Which boiler is Drumless?
Right Answer is: C In positive forced boilers, water enters the bottom of the tubes and completely transforms into steam as it passes through the tubes and reaches at the top. Thus, these boilers do not need a steam drum and hence often referred as drum-less boilers. These boilers work at very high pressures.
Why boiler ends are curved?
The steam drum A and water drum B are connected of by means of a number of tubes. The ends of the tubes are bent so that they can be connected to the drums radially as shown in Fig. 11.11. The ends of the tubes in the drums are expanded in order to have gas tight joint.
In which boiler tubes are inclined?
-Babcock and Wilcox Boiler tubes are kept inclined at an angle of 10 to 15 degree to promote water circulation. -The boiler rests over a steel structure independent of brick work so that the boiler may expand or contract freely. -The operating pressure lies between 11.5 to 17.5 bar.
What is the purpose of boiler accessories?
1. Boiler Accessories increase efficiency of the steam boilers. Explanation: Boiler accessories are auxiliary plants that help in proper operation of the boiler and also increase its efficiency. Feed pumps, injector, superheater, air preheater, economizer, superheater are some commonly used boiler accessories.
How does a boiler economizer 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.
Can boiler function without accessories?
It may be noted that a boiler cannot function safely without the mountings. The boiler accessories are the devices, which form an integral part of a boiler but are not mounted on it. They include superheater, economiser, feed pump etc.
How can I increase the efficiency of my boiler?
15 Ways To Increase Boiler Efficiency
- Increase Boiler Efficiency: Lower the Stack Temperature.
- Install an Economizer.
- Tune the Burner Regularly.
- Install a Variable Frequency Drive.
- Increase Boiler Efficiency: Insulate your Valves.
- Clean the Fireside.
- Preheat Combustion Air.
- Clean the Water Side.
Which one is incorrect statement for economiser in a boiler?
Which of the following statement about economiser of steam power plant is wrong? b) It uses the heat of flue gases used by boiler going to the chimney. Explanation: Economiser is used to rise the temperature of feed water. Air preheater is used to raise the temperature of intake air.
Which of the following is a bent tube boiler?
Explanation: Stirling boiler is a water tube boiler that comes under the category of bent tube boilers. The drums and headers in the boilers are connected by bent tubes. It has a steam capacity of 50000 kg/hr.