June 2010

Heat Transfer

Furnace tubes-enhancing safety and efficiency with infrared thermography

Thermal imaging offers advantages over thermocouples

M. CRONHOLM, Cronholm Reliability Systems      Comments? Write:editorial@HydrocarbonProcessing.com Infrared (IR) thermography can improve tube monitoring in fired process heaters, which leads to greater efficiency, productivity and reliability while enabling reductions in energy consumption and maintenance costs. Major issues involving fired heaters are reliability, safety and efficiency. Thermocouples (T/Cs) are used to measure tube temperatures as one means of process monitoring and control. However, they provide limited information about furnace conditions, such as tube areas with dangerous coke formations, or the degree of fouling that reduces tota

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