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Burners Ventilation Systems (BVS-Series)

burner ventilation system

What is a Burner Ventilation System?

The ventilation system consists of a centrifugal fan, air damper, actuator, filter, and silencer. Unlike dual block burners, the ventilation system is integrated with the burner combustion head in monoblock burners.

  1. A centrifugal fan or blower is installed in combustion systems to supply the combustion air. The fan performance directly affects the burner capacity, power consumption, and noise pollution.
  2. The air damper and actuator are installed on the fan intake to control the airflow rate to better control the burner load. Mechanical or electrical modulation systems use a continuous actuator to control the airflow rate precisely at all points in the burner firing rate range.
  3. The noise generated by the fan can be absorbed by sound-absorbing materials installed, so noise pollution in the burner can be reduced.

A forward or backward inclined centrifugal fan is used to overcome the pressure drop in the burner combustion head and the boiler. The centrifugal fan uses forward, backward, and radial blades dependent on the air flow rate and pressure. Forward centrifugal fans are usually used for applications where low pressure is required and have a smaller diameter than backward. Unlike the forward centrifugal fans, backward fans are used for burners with high-pressure drop combustion heads and boilers.

The performance curve of centrifugal fans shows the flow rate decreases with an increase in the pressure drop. In forward fans, power consumption increases dramatically with the flow rate, but power consumption rises slowly and decreases in backward fans.

The optimum designation of caused Raadman ventilation system work on optimum performance curves with low noise pollution. The fan with the backward inclined curve is required for high-capacity burners, such as monoblock burners with capacities usually above 2 MW, dual block burners, central ventilation systems for water tube burners, and multi-burner systems.

The Raadman ventilation system can install integrally with the combustion bloc in the mono block burners or separately in the dual block.

Nox Reduction Methods

During the last century, Nitrogen oxide emissions, called NOx, have constantly been increasing. Due to the destructive effects of nitrogen oxides on the health of

Industrial Furnace Burners

The «furnace industry» and products determine the type of flame contact. In many heat treatment processes, where the combustion gases must not come into contact

Burners Ventilation Systems (BVS-Series)

Air block

The Fan blade design is the result of extensive research and analysis resulting in high-performing and efficient centrifugal fans. Our R&D team will ensure the fans are complied with all safety certifications at the design stage regarding stability, reliability and safety.

Thanks to improved CFD simulations and FEM analysis, blade design simultaneously is optimized from structural and aerodynamic point of view. It also helps to provide customized solutions for market requirements. Our team surveys cover a complex step-by-step analysis of a centrifugal fan from its design to an advanced CFD & FEA simulation, including FSI and modal analysis.

Noise suppression

Acoustic absorption refers to the process by which a material, structure, or object takes in sound energy when sound waves are encountered, as opposed to reflecting the energy. Some of the absorbed energy is transformed into heat and some is transmitted through the absorbing body. The energy transformed into heat is said to have been ‘lost’.

When sound from a loudspeaker collides with the walls, the sound’s energy is reflected, one part is transmitted, and the other part is absorbed into the walls. Just as the acoustic energy was transmitted through the air as pressure differentials (or deformations), the acoustic energy travels through the material which makes up the wall in the same manner. Deformation causes mechanical losses via converting part of the sound energy into heat, resulting in acoustic attenuation, mostly due to the wall’s viscosity. Similar attenuation mechanisms apply for the air and any other medium through which sound passes.

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