The fire tube boiler is also one of the oldest designs. The burner shoots the flame into a tube that is immersed in water contained in the main vessel of the boiler itself. There may be multiple fire tubes. The heat of the flame transfers into the water, heating it to its boiling point. The resultant steam is captured in the space above the water and escapes through a steam outlet to whatever purpose it is intended for, whether heating a radiator or driving a locomotive. But because both steam and water are contained within this shared vessel, steam pressure is somewhat limited. In the event that the main vessel should succumb to increased pressure beyond its capacity, there could be catastrophic consequences.
Dry Back Steam Boilers
Operating type: Fully Automatic
Boiler type: Dry back / Fully packaged, including necessary equipment / (3-pass)
Boilers from 315 kg/hr to 4,000 kg/hr.
Fuel type: gas / light oil / heavy oil or any combination of mentioned fuels
Working with saturated steam Steam production
Range: 315 kg/hr to 4,000 kg/hr (0.2-2.6 MW)
Steam pressure produced, based on customer requirement up to 18 bar
Design & manufacturing standard: BS 2790
Non destructive test: UT, MT, RT, PT, VT, Hydrostatic test
Efficiency: up to 85%
Wet Back Steam Boilers
Operating type: Fully Automatic
Boiler type: Wet back / Fully packaged, including necessary equipment / (3-pass )
Furnaces for boilers from 4 ton/hr are equipped with expansion joint
Fuel type: gas / light oil / heavy oil or any combination of mentioned fuels
Working with saturated steam Steam production Range: 2,000 kg/hr to 28,000 kg/hr (1.3-18.27 MW)
Steam pressure produced, based on customer requirement up to 25 bar
Design & manufacturing standard: BS 2790
Non destructive test: UT, MT, RT, PT, VT, Hydrostatic test
Efficiency: up to 91.25%