The impact of water in gas on the furnace
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I read in some materials that if gas contains water, it can cause backfire in the furnace. Could experts explain why water in the gas leads to backfire in the furnace? What exactly is backfire in a furnace? I’m not quite sure; how can one determine whether there is backfire by observing the flame of the furnace? Thank you, extra points
When gas contains water, water can be seen spraying out from the burner nozzle, which affects the stability of the flame, reduces thermal efficiency, and causes the temperatures at various points in the heater to drop sharply, especially the temperature in the furnace chamber and at the furnace outlet; the flame turns red as a result. The flame goes out when there is too much water present, while a small amount of water causes the flame to shrink.
What effects will there be if the wind contains water/vapor?
Before gas and combustion air enter the nozzle, a vane-type high-efficiency gas-liquid separator is used to remove liquid droplets and foam from the airflow. So how can water be present in it? Wasn’t a high-efficiency gas-liquid separator for feather leaves installed? ? I’d like to hear the details.
Less fuel (gas) is ejected from the nozzle, and due to the presence of misty water or even small water droplets, the flame becomes shorter and redder; in the case of small water droplets, a parabolic red flame can be seen.
The presence of water indicates that the gas heater is leaking. Water can cause the flame to burn unevenly, lead to deflagration, result in a shower of embers, or even cause it to go out. In my opinion, tempering occurs when water creates a liquid seal at the bent section of the fuel gas line or at the tip of the burner, resulting in an increase in pressure. Once the water is removed, the pressure drops immediately, and the flame then burns along the fuel gas line towards its interior.