What are the effects on a boiler if its radiation area is too large and its convection area is too small?

2017-05-29 View Original

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What are the effects on a boiler if its radiation area is too large and its convection area is too small?

Reply #2 2017-06-01

When the radiant area of the boiler is too large and the convective area is too small, the effects on the boiler include low flue gas temperature at the furnace outlet and low superheated steam temperature (the reasons for this include both a low flue gas temperature at the furnace outlet and low heating surfaces in the superheater). The effect on the exhaust gas temperature cannot be generalized; both low and high exhaust gas temperatures are possible.

Reply #3 2017-06-08

If the radiation area is too large, the temperature at the furnace outlet will be lower, which leads to incomplete combustion of the fuel inside the furnace. As a result, the efficiency of the boiler decreases, and at the same time, fuel consumption increases.

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