Boiler efficiency (%)=(heat exported by outlet steam/heat supplied by the fuel)*100. Classification of boiler. The classification of the boiler is based on the following criteria: According to the relative passage of water and hot gases: Water tube boiler: A boiler in which the water flows through the tubes that are surrounded by hot combustion
Learn MoreIn fire tube boiler the fire or hot gas are present inside the tubes and water surrounds these fire tubes. Since fire is inside the tubes and hence it is named as fire tube boiler. The heat from the hot gases is conducted through the walls of the tube to the water.
Learn More2010-12-2·In the fire tube boilers,the flames and hot gases,produced by combustion of fuel pass through the tubes which are surrounded by water. The heat is conducted through the walls of the tubes from the hot gases to the surrounding water.Example of fire tube boiler are>>Simple Vertical Boiler,Cochran Boiler,Lancashire Boiler,Cornish Boiler, and Velcox Boiler
Learn MoreThe fire tube boiler, the oldest design, is made so the products of combustion pass through tubes surrounded by water in a shell. The furnace/flame volume can either be inside or external to the shell that contains the water. The upper steam capacity of fire tube boilers is about 20,000 Ib/hr, and the peak pressure obtainable is limited by
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Learn More2020-4-29·Classification of boilers according to axis,no of tubes,position of furnace, mode of operation etc. Horizontal, Vertical or Inclined, Single tube and Multi tube,Fire tube and Water tube,Externally fired and Internally fired,Stationery and Mobile and more
Learn MoreIn a Fire tube boiler, the fire will be inside the tube and water is surrounded outside. So, it creates low-pressure steam. There are different types of low-pressure boilers. Cochran, Locomotive and; Lancashire; Natural circulation is used in low-pressure boilers, the material which is
Learn MoreChapter-3 (Steam Generator): BOILER, CLASSIFICATION OF STEAM GENERATORS: FIRE-TUBE BOILERS, WATER-TUBE BOILERS, WATER CIRCULATION, TYPES OF WATER CIRCULATION: NATURAL CIRCULATION, FORCED
Learn More2 ·This video Cover Types of boilers 1. Fire tube boiler 2. Water tube boiler. 3. Package boiler. 4. Travel grate boiler 5. Spreader type boiler. 6. Pulverized Fuel Boiler 7. Fluidized bed Combustion
Learn MoreIn a Fire tube boiler, the fire will be inside the tube and water is surrounded outside. So, it creates low-pressure steam. There are different types of low-pressure boilers. Cochran, Locomotive and; Lancashire; Natural circulation is used in low-pressure boilers, the material which is
Learn More2020-4-21·a) Single-tube b) Multi-tube boiler A boiler having only one fire tube or water tube is called a single tube boiler. The boiler having two or more, fire or water tubes is called multi tube boiler. Examples Single tube boiler: Cornish boiler, Vertical boiler. Multi-tube boiler: Lancashire boiler, Locomotive boiler, Babcock and Wilcox boiler. 9.
Learn More2017-1-25· Press the tube through the water or gas can be divided into categories: fire-tube boilers, water boilers and fire tube boiler combined. by the use of the boiler is divided into: life, boilers, industrial boilers, power station boilers and hot water boilers.
Learn More2020-5-4·As the water and steam both are in same vessel a fire tube boiler cannot produce steam at very high pressure. Generally it can produce maximum 17.5 kg/cm 2 and with a capacity of 9 Metric Ton of steam per hour. Types of Fire Tube Boiler. There are different types of fire tube boiler likewise, external furnace and internal furnace fire tube boiler.
Learn More2020-5-1·Todays steam generating systems owe their dependability and safety to more than 125 years of experience in the design, fabrication and operation of water tube boilers. Boiler classification can be based on many factors like usage, fuel fired, fuel firing system, type of arrangement etc. The commonly known types are pulverized coal fired boilers, fluidized bed boilers, super critical boilers
Learn More2020-4-19·-In the water tube boilers, the water is inside the tubes and hot gases surround them. Examples: Babcock and Wilcox, Yarrow boiler etc. 3. Externally fired and internally fired-The boiler is known as externally fired if the fire is outside the shell. Examples: Babcock and Wilcox boiler boiler-In case of internally fired boilers, the furnace is
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