Whether a well-functioning Riello burner is installed on a boiler, and whether it still has the same outstanding combustion performance depends largely on whether the gas dynamic characteristics of the two match. Only good matching can play the function of the burner, ensure the stable combustion of the furnace, achieve the expected heat output, and obtain the outstanding thermal efficiency of the boiler.
1. Matching of gas dynamic characteristics
A single-type automatic burner is like a flamethrower, which sprays flames into the furnace (combustion chamber), completes complete combustion and outputs heat in the furnace; the burner manufacturer's determination of the combustion completeness of the product is in Specific specifications are carried out within the combustion chamber. Therefore, the conditions of standard tests are generally used as the selection conditions for burners and boilers. These conditions are summed up as follows:
(1) power;
(2) Airflow pressure in the furnace;
(3) The space size and geometry (diameter and length) of the furnace.
The so-called matching of aerodynamic characteristics refers to the degree to which these three conditions are met.
2. Power
The power of the Riello burner refers to how much mass (kg) or volume (m3/h, under standard conditions) of fuel it can burn per hour when it is fully burned, and also gives the corresponding heat output (kw/h or kcal /h). The boiler is calibrated for steam production and fuel consumption, and the two must match when selected.
3. Gas pressure in the furnace
In an oil (gas) boiler, the hot air flow starts from the burner and is exhausted to the atmosphere through the furnace, heat exchanger, flue gas collector and exhaust pipe, forming a fluid thermodynamic process. The hot air flow produced after combustion, its upstream pressure head moves in the furnace channel, just like the water in the river, the potential difference (drop, water head) moves downstream. Due to the resistance (called flow resistance) of the furnace wall, channel, elbow, baffle, gorge and chimney to the flow of gas, pressure loss will result. If the pressure head cannot overcome the pressure loss along the way, the activity cannot be completed. Therefore, a certain flue gas pressure must be maintained in the furnace, which is called back pressure for the burner. For boilers without air induction devices, the furnace pressure must be higher than the atmospheric pressure after considering the pressure head loss along the way.
Whether a well-functioning Riello burner is installed on a boiler, and whether it still has the same outstanding combustion performance depends largely on whether the gas dynamic characteristics of the two match. Only good matching can play the function of the burner, ensure the stable combustion of the furnace, achieve the expected heat output, and obtain the outstanding thermal efficiency of the boiler.
1. Matching of gas dynamic characteristics
A single-type automatic burner is like a flamethrower, which sprays flames into the furnace (combustion chamber), completes complete combustion and outputs heat in the furnace; the burner manufacturer's determination of the combustion completeness of the product is in Specific specifications are carried out within the combustion chamber. Therefore, the conditions of standard tests are generally used as the selection conditions for burners and boilers. These conditions are summed up as follows:
(1) power;
(2) Airflow pressure in the furnace;
(3) The space size and geometry (diameter and length) of the furnace.
The so-called matching of aerodynamic characteristics refers to the degree to which these three conditions are met.
2. Power
The power of the Riello burner refers to how much mass (kg) or volume (m3/h, under standard conditions) of fuel it can burn per hour when it is fully burned, and also gives the corresponding heat output (kw/h or kcal /h). The boiler is calibrated for steam production and fuel consumption, and the two must match when selected.
3. Gas pressure in the furnace
In an oil (gas) boiler, the hot air flow starts from the burner and is exhausted to the atmosphere through the furnace, heat exchanger, flue gas collector and exhaust pipe, forming a fluid thermodynamic process. The hot air flow produced after combustion, its upstream pressure head moves in the furnace channel, just like the water in the river, the potential difference (drop, water head) moves downstream. Due to the resistance (called flow resistance) of the furnace wall, channel, elbow, baffle, gorge and chimney to the flow of gas, pressure loss will result. If the pressure head cannot overcome the pressure loss along the way, the activity cannot be completed. Therefore, a certain flue gas pressure must be maintained in the furnace, which is called back pressure for the burner. For boilers without air induction devices, the furnace pressure must be higher than the atmospheric pressure after considering the pressure head loss along the way.