Not good for high pressure applications Boilers with hot fumes inside pipes Hot fumes come from the burner Fire tube boilers – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 44db72-Yjg5N Conclusion Boilers are classified into fire tube or water tube boilers depending on whether the heat source is inside or outside the tubes. Tube sheet Stack Water line NOTE: These boilers were an integral part in leading the way in the industrial revolution starting in the 1860’s. For ex- Cornish boiler. The heat of the gases is transferred through the walls of the tubes by thermal conduction, heating the water and ultimately creating steam.

For ex- … Locate and rectify the fault, wait until the boiler has cooled down, The maintenance of this boiler is costly. If many tubes are used to pass hot gases then it is called multi-tube boiler. Good for space heating. It requires regular inspection. Type of fire tube boiler LOCOMOTIVE BOILER. SINGLE AND MULTI – TUBE BOILER These are basically types of fire tube boilers.

15. Boiler Preparation, Start-Up and Shutdown Learning Outcome When you complete this module you will be able to: Describe the basic preparation of a boiler for start-up, and the start-up and shutdown procedures. Describe the steps that must be taken to prepare a boiler for start-up. About Locomotive boilers : Locomotive boiler is a horizontal fire tube type mobile boiler. The fire tube boiler, the oldest design, is made so the products of combustion pass through tubes surrounded by water in a shell. FIRE-TUBE BOILER EMERGENCIES (a) When the boiler is steaming with water level not visible in the gauge glass, shut off the burner immediate1y.

A fire-tube boiler is a type of boiler in which hot gases pass from a fire through one or (many) more tubes running through a sealed container of water. Ex: Cornish Boiler, Lancashire Boiler. The main requirement of this boiler is that it should produce steam at a very high rate. | PowerPoint PPT presentation | free to view The upper steam capacity of fire tube boilers is about 20,000 Ibm/hr, and the peak pressure obtainable is limited by their large shells to about 300 psi.

The efficiency of the fire tube boiler is less as compared to the water tube boiler.

The main requirement of this boiler is that it should produce steam at a very high rate. The furnace/flame volume can either be inside or external to the shell that contains the water. Test the gauge glass or test cocks. Therefore, this boiler requires a large amount of heating surface and large grate area to burn coal at a rapid rate. Boiler Evolution 5 Titanic Titanic Boiler Room NOTE: The Titanic was powered by 29 firetube boilers that contained 159 furnaces which were fired with 825 tons of coal per day. 2. The efficiency of the water tube boiler is more. 23. 9.

14. Learning Objectives Here is what you will be able to do when you complete each objective: 1. Internal furnace boiler - Fire tube Boiler - Packaging Boiler - This is the conventional three pass smoke-tube design coal/wood fired steam boiler having internal furnace. This comes in dry back, semi-wet back and fully wet-back options and is most suitable for manual firing of coal, wood or briquettes. Water Tube Boilers Boiler water passes through the tubes while the exhaust gases remain in the shell side, passing over the tube surfaces. If low water level established in the boiler NEVER add water into the boiler right away. If single tube is used to pass hot gases then it is called single tube boiler. Therefore, this boiler requires a large amount of heating surface and large grate area to burn coal at a rapid rate. The goal in both cases is to maximize the heat transfer between the water and the hot gases heating it. Lancashire Boiler 22. They are easy to maintain as they are externally fired. Ex: Babcock and Wilcox Boiler. Locomotive boiler is a horizontal fire tube type mobile boiler. Cost of boiler tube failures 9/4/2013 Steag O&M Company 7 The cost of boiler tube failures is comprised of three main components; the cost of the repair, the cost of start up oil to return unit to service, and the cost of lost production.