Radiant tube service life is affected by many factors, gas-fired radiant tube surface temperature distribution of radiant tube service life influence cannot be ignored.If the radiant tube surface temperature is larger temperature difference, is due to the deformation and stress caused by temperature difference or local overheating will cause damage of radiant tube, also affect the output power of radiation tube surface.For example, if the radiant tube the doubling output power than the rated power output, the service life of the radiant tube will be reduced to about 1/10 of the original.After using HTAC technology, got very good solution to this problem.In addition, as a result of low excess air coefficient of combustion and combustion products backflow, reduces the radiation tube of oxidizing atmosphere, to extend the service life of radiant tube is also very good.
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