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- 1. M M University SadopurAmbala Haryana-134007 Boilers Submitted to:- Submiited by:- Mr Subhash Mallik Kumar Aditya Asst. professor Roll -75134015 Deptt Of ME 8th Sem (ME)
- 2. CONTENTS Introduction PartsOf Boilers Types Of Boilers Important Boiler (as per syllabus)
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- 4. components of boilers •components of boilers are divided in two phase- a) Boiler Accessories b) Boiler Mountings a) Boiler Accessories Feed pump Super heater Economizer Air preheater
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- 6. superheater A superheater isa device used to convert saturated steam or wet steam into superheated steam or dry steam.
- 7. economiser An economizer isa device used to heat feed water by utilizing the heat in the exhaust flue gases before leaving through the chimney.
- 8. Air preheater An airpreheater (APH) is a device designed to heat air before another process
- 9. Boiler Mountings • 1.Water level indicator. (Water gauge) 2. Main steam stop valve. 3. Pressure gauge. 4. Feed check valve. 5. Fusible plug. 6. Blow down valve. (Blow off cock) 7. Air vent. 8. Safety valve.
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- 12. Types of boilers •Generally there are two types of boilers:- a) water tube boiler b) fire tube boiler
- 13. Water tube boilers •Boiler water passes through the tubes while the exhaust gases remain in the shell side, passing over the tube surfaces • Merit is can be used as high capacity steam • Demerit is high capital cost and efficient control system needed
- 14. Fire Tube Boiler •The combustion gases pass inside boiler tubes, and heat is transferred to water on the shell side. • Steam rate is lower than water tube boiler
- 15. Additional important boiler(subject point of view) • High pressure boiler • Lamont boiler • Benson boiler • Velox boiler
- 16. High pressure boiler •A boiler is called a high-pressure boiler when it operates with a steam pressure above 80 bars. The high-pressure boilers are widely used for power generation in thermal power plants.
- 17. Features of highpressure boiler • Forced circulation of water • Large number of small diameter tubes • Higher steam pressure and temperature • Pressurized combustion Advantages of High-pressure Boilers The plant efficiency is increased. scale formation is minimized. They require less heat of vaporization. the steam generation is economical.
- 18. Lamont boiler • ALaMont boiler is a type of forced circulation water- tube boiler . • The mechanical pump is employed in order to have an adequate and positive circulation in steam and hot water boilers • internally fired water tube boiler.
- 19. Advantages of lamontboiler 1. It can high pressure boiler. 2. It is flexible in design. 3. This boiler can reassemble in natural circulation boiler. 4. It can easily start. 5. It has high steam generation capacity of about 50 ton/ hour. 6. This boiler has higher heat transfer rate.
- 20. Benson boiler • Itis a water tube boiler • generate high pressure steam
- 21. Advantages Of BensonBoiler • 1. The Benson boiler does not use water-steam separator drum, which reduce the total cost of boiler. • 2. This boiler can transport easily from one station to another. • 3. It is economical and have higher efficiency. • 4. This boiler can use over the pressure above 350 bar without changing the evaporator. • 5. This can be start easily and can reach its maximum load capacity within 10 minutes. reference- http://www.mech4study.com/2016/03/benson-boiler.html#sthash.03H6zLZE.dpuf
- 22. Velox boiler • veloxboiler is a forced circulation water tube boiler. • In this boiler, the velocity of flue gases is greater than the velocity of sound, which causes more heat transfer from gas to the water, which increases the steam generation rate. Due to this, it is most important boiler.
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