Experimental study of turbulent combustion in a single burner furnace

Objective
The objective of the project is to get better fundamental understanding of flameless combustion. Specifically, the project aims to determine the effects of fuel composition, operational conditions and nozzle geometry on the flameless combustion process in a single-burner furnace. From visualization of the reactions zones in the furnace and analysis of the flue gas composition it will be determined under which conditions the flameless combustion regime can be established in the single-burner furnace. A selected set of flames will then be studied in greater detail using laser diagnostic measurement techniques: by measuring the velocity fields with PIV/LDA, the temperature with CARS and OH concentration with PLIF.  

Progress 
The design of the Delft single-burner furnace (DSBF) was completed. All components for this furnace with full optical access for laser diagnostics are ready and it is currently under construction.
The operation of a WS-FLOX® burner has already been tested in a furnace without optical access (see figure). The combustion mode was successfully switched from FLAME mode to FLOX® mode without quenching. Temperature was continuously monitored using K type thermocouples. To support the experimental design, CFD simulations are made of the reacting flow in the furnace.

Publications
X. Huang, M.J. Tummers and D.J.E.M. Roekaerts. Study of flameless combustion in Delft single-burner furnace (DSBF) In : Book of Abstracts, Combura Symposium, October 8-9, 2014, Soesterberg, Published by Technology Foundation STW, Utrecht, The Netherlands, p 43