Liquid-phase heat transfer oil boilers: flow velocities within the tubes in the radiation and convection zones, leading to carbon deposition inside the tubes
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In liquid-phase heat transfer oil boilers, where the flow velocity inside the tubes in the radiation zone is < 2 m/s and the flow velocity inside the tubes in the convection zone is < 1.5 m/s, will overheating and carbon deposition occur inside the liquid-phase boiler?
Too low a flow rate is likely to result in carbon buildup
According to the requirements of the Boiler Code and its interpretations, the calculation of the minimum flow rate is included in the liquid film temperature calculation sheet; in my opinion, if the flow rate is lower than this value, carbon deposition will occur inside the pipes, which can lead to problems with the furnace
Apart from the influence of flow velocity within the pipe, the quality of the heat transfer oil itself is also very important, especially under high-temperature operating conditions.
It should be like this when the temperature exceeds the maximum allowable operating temperature of the heat transfer oil