Horizontal fire tube boiler is one of the most basic types of boiler and the design is also very old. It was popular in 18 th century. It was mainly used for steam locomotive engines
Operation of horizontal fire tube boiler
Operation of horizontal fire tube boiler is as simple as its construction. In horizontal fire tube boiler , the fuel is burnt inside a furnace. The hot gases produced in the furnace then passes through the fire tubes. The fire tubes are immersed in water inside the main vessel of the boiler. As the hot gases are passed through these tubes, the heat energy of the gasses is transferred to the water surrounds them. Horizontal Firetube Boiler in Malaysia is popular.
As a result steam is generated in the water and naturally comes up and is stored upon the water in the same vessel of horizontal fire tube boiler.This steam is then taken out from the steam outlet for utilizing for required purpose. The water is fed into the boiler through the feed water inlet.
As the steam and water is stored is the same vessel, it is quite difficult to produce very high pressure steam from. General maximum capacity of this type of boiler is 17.5 kg/cm 2 and with a capacity of 9 Metric Ton of steam per hour.In a horizontal fire tube boiler, the main boiler vessel is under pressure, so if this vessel is burst there will be a possibility of major accident due to this explosion.