2015-7-31 · water-tube boilers, tubes containing water are heated by combustion gases that flow outside the tubes, while in the fire-tube boilers hot combustion gases flow inside the tubes and water flows outside. Key design parameters to determine the boiler size and power are the output steam mass flow rate, pressure and temperature.
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2019-10-9 · Fire-tube boiler: Here, water partially fills a boiler barrel with a small volume left above to accommodate the steam (steam space).This is the type of boiler used in nearly all steam locomotives.The heat source is inside a furnace or firebox that has to be kept permanently surrounded by the water in order to maintain the temperature of the heating surface below the boiling point.
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fire-tube-boiler. DRYBACK VS. WETBACK DESIGN. There are different types of firetube boiler designs, including dryback and wetback with an integral or gun burner. A dryback firetube boiler includes a refractory-filled rear door that can be opened to expose the entire rear tube sheet and affixed tubes.