What is the relationship between the burner and the furnace chamber?

A good performance of fully automatic oil (gas) burner installed on a boiler, whether it still has the same good combustion performance, depends largely on whether the gas dynamic characteristics of the two match. Only a good match can bring out the burner performance, ensure the stable combustion of the furnace, achieve the expected heat output and obtain a good thermal efficiency of the boiler.

1、Power

The power of the burner refers to the full combustion, how much mass (kg) or volume of fuel it can burn per hour, while also giving the corresponding heat output. And the boiler is calibrated for steam production, but also marked fuel consumption, the choice of the two must match.

2、Matching of gas power characteristics

A single automatic burner is like a flame thrower, the flame is sprayed into the furnace (combustion chamber) to achieve complete combustion and heat output in the furnace; burner manufacturers to determine the complete combustion of the product is carried out in a specific standard combustion chamber, so the conditions of the standard experiment is generally used as the burner and boiler selection conditions. These conditions are summarized as: (1) power; (2) gas flow pressure in the chamber; (3) space size and geometry of the chamber (diameter and length). The so-called gas power characteristics match, which means the degree of meeting these three conditions.

3, the impact of the size and geometry of the furnace chamber

For boilers, the space size of the furnace chamber, in the design of the first decision in the selection of the heat load intensity of the furnace, according to which the volume of the chamber can be initially determined. After the volume of the furnace chamber is determined, its shape and size should also be determined. The design principle is to make full use of the volume of the furnace chamber; try to avoid dead ends, to have a certain depth, reasonable flow direction, to ensure that there is enough reaction time, so that the fuel is completely burned in the furnace chamber. A boiler to be repeatedly debugged to have a good match with the burner.

4, the gas pressure in the furnace chamber

In an oil (gas) boiler, the hot air flow from the burner, through the furnace, heat exchanger, flue gas collector and exhaust pipe discharge to the atmosphere, consisting of a fluid thermal process. The furnace chamber must maintain a certain flue gas pressure, for the burner called back pressure, for boilers without induced draft device, the chamber pressure must be higher than the atmospheric pressure after taking into account the loss of pressure head along the way.