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CFD modeling of a radiant tube heater

Authors
Journal
International Communications in Heat and Mass Transfer
0735-1933
Publisher
Elsevier
Volume
39
Issue
3
Identifiers
DOI: 10.1016/j.icheatmasstransfer.2012.01.011
Keywords
  • Radiant Heater
  • Cfd
  • Combustion
  • Radiation Heat Transfer
  • Modeling

Abstract

Abstract This paper reports experimental and Computational Fluid Dynamics (CFD) studies on combustion and radiation heat transfer from a real radiant tube heater. The temperature along the radiant tube as well as at different positions in a test room has been measured. A good agreement between the experimental and predicted results has been found. Based on this validation, the effect of excess air, presented by Air Factor (AF) on efficiency of heater has been studied, theoretically. Moreover, the effect of inlet air preheating on heater efficiency has been examined. The results show that the higher values of excess air can reduce the heater efficiency. The air preheating temperature caused positive effect on heater efficiency. In addition, the results show at higher preheating temperature the effect of AF value on heater efficiency is negligible.

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