Abstract:
Manufacturers increasingly strive to customize fire tube
boiler designs to specific needs. A comprehensive thermal
design model is therefore necessary. In this article a steady state
thermal model based on the plug flow furnace model and the ε-
NTU method is presented. The model includes the turn boxes
which other authors neglect. The steady state model
furthermore allows optimizing the boiler designs. It is used to
analyze the gas temperature along the flow length. Secondly,
the article compares a plug flow furnace model, the ε- NTU
method with and without radiation. The ε- NTU with radiation
allows decreasing the number of control volumes while
retaining accuracy. Additionally the effect of the turn boxes is
investigated.
Description:
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .
