The heat from the burner is transferred to the water tubes. As water flows through the tubes, the combustion gases heat the water and produce steam. This steam is collected in the upper drum, while combustion gases exit the boiler stack as flue gas. Several types of tubes are found inside the boiler.
Two primary principles are used with this form of tank design: thermal and vacuum. This depends on which type of boiler being used. Each principle also has different pump construction requirements. Thermo principle. A tank using the thermal principle is connected to the atmosphere. This design is normally used in smaller plants.
Working Principle | Boilers Guide
Combustion efficiency 1240 kW 93 % Dimensions Dimensions (width x depth x height) Empty weight Water volume 606 x 1,350 x 1,618 mm 455 kg 173 l Design and adjustment values Working pressure: boiler Working pressure: heat exchanger Working temperature Recommended underpressure in the combustion chamber Production of hot domestic water 0.52
Working Principle. Both gas and oil fired boilers use controlled combustion of the fuel to heat water. The key boiler components involved in this process are the burner, combustion chamber, heat exchanger, and controls. The burner mixes the fuel and oxygen together and, with the assistance of an ignition device, provides a platform for combustion. This combustion takes place in the combustion chamber, and the
In its most simple form, the air flow SP is the greater of the boiler master and the actual fuel flow PV (%) and the fuel flow SP is the lesser of the boiler master and the actual air flow PV (%, after it is run through the FAR PWC and O 2-trimmed). This forces air to lead on firing rate increases, and fuel to lead on decreases, and ensures that if the system ever runs out of air, it will never add too much fuel.
Principles of work. In a conventional boiler, fuel is burned and the hot gases produced pass through a heat exchanger where much of their heat is transferred to water, thus raising the water's temperature. One of the hot gases produced in the combustion process is water vapour (steam), which arises from burning the hydrogen content of the fuel.