Numerical study of heat transfer characteristics of organic heat carrier furnace chamber.

The heat transfer oil in the organic heat carrier furnace (OHCF) is prone to deterioration and deterioration at higher operating temperatures, resulting in overheating of the furnace tube and bursting of the tube, resulting in safety accidents. Therefore, it is necessary to study and analyze the flowing heat transfer characteristics of organic heat carriers in the furnace tube. The paper takes YY(Q)W-180(15) OHCF as the research object, mainly through ANSYS CFX numerical simulation method, to analyze the influence of influencing factors: inner and outer spiral tube spacing R, oxygen content, air preheating degree T and excess air coefficient on the temperature field, velocity field and NOx concentration inside the OHCF, and found that the organic heat carrier in the oxygen concentration of 25%, air preheating The thermal efficiency of the furnace is higher and the pollutant content emitted at the exit of the furnace is lower when the oxygen concentration is 25%, the air preheating temperature is 498 K and the excess air coefficient is 1.10. Also, the smaller the inner coil spacing R1 and the outer coil spacing R2 from the furnace wall, the higher the overall furnace chamber temperature. • Optimization of furnace geometry for higher combustion efficiency and lower NOx emissions • Numerical simulation and experimental verification of the heating furnace • Compare the new tube with ordinary spiral coil tube • Study of the influence of operating parameters on the thermal efficiency of organic heat carrier furnaces [ABSTRACT FROM AUTHOR]