Lecture 05_PPE_Unit 2: High Pressure Boilers
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The document outlines the curriculum for a diploma course in mechanical engineering, focusing on high pressure boilers, specifically discussing the Velox and Ramsin boilers. It covers their construction, working principles, advantages, and disadvantages. The document also includes contact information for the trainer and mentions upcoming topics for further lectures.
Lecture 05_PPE_Unit 2: High Pressure Boilers
- 1. Program: Diploma (Mechanical) Class: TY (ME) Semester: V Course: Power Plant Engineering Code: 22566Code: 22566 LECTURE 05: Unit: 2. High Pressure Boilers
- 2. 02 wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Name of theName of theName of theName of the Trainer : Prof. Rushikesh Deoram SonarTrainer : Prof. Rushikesh Deoram SonarTrainer : Prof. Rushikesh Deoram SonarTrainer : Prof. Rushikesh Deoram Sonar Years ofYears ofYears ofYears of Experience : 10Experience : 10Experience : 10Experience : 10 DomainDomainDomainDomain Expertise : Mechanical EngineeringExpertise : Mechanical EngineeringExpertise : Mechanical EngineeringExpertise : Mechanical Engineering Qualification: M.E. (Design Engineering)Qualification: M.E. (Design Engineering)Qualification: M.E. (Design Engineering)Qualification: M.E. (Design Engineering) Contact Details:Contact Details:Contact Details:Contact Details: +91 9890481959+91 9890481959+91 9890481959+91 9890481959 rushikesh.sonar@sandippolytechnic.orgrushikesh.sonar@sandippolytechnic.orgrushikesh.sonar@sandippolytechnic.orgrushikesh.sonar@sandippolytechnic.org
- 3. 03Unit II: High Pressure Boilers TOPICS COVERED IN PREVIOUS LECTURE (04):- 2.32.32.32.3 Construction and principle of working of :- 2. Benson Boiler, 3. Loeffler Boiler 4. Schmidt- Hartmann Boiler wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik TOPICS TO BE COVERED IN THIS LECTURE (04):- 2.32.32.32.3 Construction and principle of working of :- 5. Velox Boiler 6. Ramsin Boiler
- 4. 04Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : DIAGRAM & BASICS Types of boiler: Forced circulation, High Pressure boiler, Water tube boiler Steam Generating Capacity: 100 tones/hour Pressure: 84 bar Temp.: 540°C wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik
- 5. 05Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : DIAGRAM & COMPONENTS Various part of boiler:Various part of boiler:Various part of boiler:Various part of boiler: Evaporator Drum Feed Pump Gas Turbine Air Compressor Super Heater Combustion Chamber Fuel Tank wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Fuel Tank Steam Separator
- 6. 06Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : DIAGRAM & WORKING PRINCIPLE When the velocity of the gas is greater than the speed of sound, its heat transfer rate is also increases. So more heat is transferred from gas to water as compared with the heat transfer at the subsonic speed. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik subsonic speed.
- 7. 07Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : CONSTRUCTION In Velox boiler, pressurized combustion is used so axial flow compressor is used which is run by gas turbine. The combustion chamber and evaporating tubes are arranged in such a way that the hot products from combustion chamber are directly passed to annulus of evaporating tubes. Steam separator is arranged tangential to evaporating tubes. Hot flue gases are used for running gas turbine, for economizer and for super heater. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Hot flue gases are used for running gas turbine, for economizer and for super heater.
- 8. 08Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : WORKING The air is compressed by air compressor driven by gas a turbine driven. This compressed air passes from the combustion chamber, where more heat release by the fuel which increase the velocity of the flue gases up to sound velocity. From the bottom of combustion chamber, this flue gases pass from the fire tubes. These fire tubes surrounded by the evaporator water tubes. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik The water from the economizer passes from the evaporator tube force by a circulating pump. This water passes 15 – 20 time from the evaporator tube at very high speed. Due to this high speed circulation, heat is transfer from the gases to the water at very high rate. The mixture of water and steam is formed which further passes from the water and steam separator.
- 9. 09Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : WORKING The steam from the steam separator passes to the super heater and further for process work. The remaining water in the steam separator again passes from the evaporator tube. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik The flue gases from the fire tubes send to the super heater tubes, where it increases the steam temperature. The gas from the super heater sends to the turbine where it rotates the gas turbine and then passes from the economizer.
- 10. 10Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : PATH OF FLOW wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik
- 11. 11Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : ADVANTAGES This boiler has high heat transfer rate. It has great flexibility. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik It is Compact in design. It is easy to control. It is fully automatic. It has great thermal efficiency of about 90 – 95%
- 12. 12Unit II: High Pressure Boilers 2.3.5 : VELOX BOILER : DISADVANTAGES It can only operate on liquid or gaseous fuels. The size of the Velox boiler is limited, hence the capacity is low. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik
- 13. 13Unit II: High Pressure Boilers 2.3.6 : RAMSIN BOILER : DIAGRAM & BASICS Types of boiler: Forced circulation, High Pressure boiler, Water tube boiler Also called ‘Once through boiler’ wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Pressure: 221 bar
- 14. 14Unit II: High Pressure Boilers 2.3.6 : RAMSIN BOILER : DIAGRAM & WORKING It is a supercritical boiler. It is very similar to Benson boiler, except that evaporator section spiral tube instead if straight tubes. Its water circuit is shown in Figure. The boiler consists of inclined evaporator coil arranged in spiral 40 such coils is paralleled around the furnace. Water is forced into the economizer by a feed water pump where it is wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Water is forced into the economizer by a feed water pump where it is heated and then it enters in spiral evaporator tube where water flashes to steam. Steam generated in evaporator, flows into headers and then convection super heater. The superheated steam is utilized for power generation.
- 15. 16Unit II: High Pressure Boilers 2.3.6 : RAMSIN BOILER : ADVANTAGES This boiler has high heat transfer rate. It has high thermal efficiency. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Corrosion and erosion problem are minimized. It is adaptable to load fluctuations.
- 16. 16Unit II: High Pressure Boilers 2.3.6 : RAMSIN BOILER : DISADVANTAGES It is costly due to increased requirement for steel for heat transfer surface, pump and feed water piping. Generation of steam using forced circulation, high and supercritical pressure. wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik
- 17. 17Unit II: High Pressure Boilers In this lesson, We have learnedIn this lesson, We have learnedIn this lesson, We have learnedIn this lesson, We have learned 2.2.5 Construction, Working, Adv. & Disadv. of Velox Boiler 2.2.6 Construction, Working, Adv. & Disadv. of Ramsin Boiler SUMMARY wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik 2.2.6 Construction, Working, Adv. & Disadv. of Ramsin Boiler
- 18. 18Unit II: High Pressure Boilers Our Next Video Lecture Topic 2.5 COMPARISON OF VARIOUS TYPES OF HIGH PRESSURE BOILERS 2.4 FLUIDIZED BED COMBUSTION (FBC) BOILERS wwwwwwwwwwww....ssssaaaannnnddddiiiippppffffoooouuuunnnnddddaaaattttiiiioooonnnn....oooorrrrggggMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, NashikMechanical Engineering Department, Sandip Polytechnic, Nashik Till Then Stay Connected, THANK YOU 2.5 COMPARISON OF VARIOUS TYPES OF HIGH PRESSURE BOILERS