Development of Modified Plug-Flow Furnace Model for Identification of Burner Thermal Behaviour

• Main Author: Z. Jegla
• Format: Article
• Language: English
• Published: AIDIC Servizi S.r.l. 2013-09-01
• Series: Chemical Engineering Transactions
• Online Access: https://www.cetjournal.it/index.php/cet/article/view/6148

High-performance tubular furnaces (fired heaters) of radiation-convection type, containing radiation chamber and convection section, are preferred for fundamental applications of process industry. The radiant chamber is dominant part of furnace since the most of heat is transferred to heated fluid there. Knowledge of heat flux distribution along the height of radiant chamber of tubular furnace is one of the crucial conditions of proper design of radiant tube coil system (especially when two-phase flow of heated fluid occurs inside radiant tubes). However, this information is not known in the initial design stage where the furnace design is performed according to relevant design standards and restrictions. Paper presents actual results of development of so-called Modified Plug-Flow (MPF) furnace model for calculation and identification of real distribution of heat flux along height (length) of combustion chamber from burners. Obtained results show that MPF model is able to identify with sufficient accuracy a real burner thermal behaviour based on results of experimental measurement of real burners from burner testing facility.