Intensification of heat transfer by changing the burner nozzle

2016 ◽  
Author(s):  
Róbert Dzurňák ◽  
Ján Kizek ◽  
Gustáv Jablonský
Keyword(s):  
Heat Transfer ◽  
Burner Nozzle

Compact Low-Temperature Analogue of Aero Engine Fire-Certification Burner

2001 ◽  
Author(s):  
Abd. Rahim Abu Talib ◽  
Andrew J. Neely ◽  
Peter T. Ireland ◽  
Andrew J. Mullender
Keyword(s):  
Heat Transfer ◽  
Low Temperature ◽  
Processing Technique ◽  
Image Processing Technique ◽  
Test Procedures ◽  
Adiabatic Wall ◽  
Warm Up ◽  
Integrity Testing ◽  
Aero Engine ◽  
Burner Nozzle

The paper describes the compact low-temperature analogue burner designed for fire integrity testing. The low-temperature analogue burner has been improved in order to make the test procedures easier, faster and more accurate. The use of a thermally thin faceplate at the burner nozzle eliminates the requirement for a warm up phase that was previously required and thus negates the need for a shutter. Less helium and time is needed for the whole operation. The new compact burner also provides improved accessibility for instrumentation and camera views. A new image processing technique has been developed to simultaneously map the distributions of heat transfer coefficient (h) and adiabatic wall temperature (Taw) across the surface of the model using multiple liquid crystal coatings and varying gas temperatures. Measurements of h and Taw distributions made on a flat plate using the compact burner are reported.

The Influence of Burner Nozzle Angle for Flow Field and Heat Transfer of Ultra-Supercritical Tower Boiler

2011 ◽  
Author(s):  
Saike Chen ◽  
Mo Yang ◽  
Yuwen Zhang ◽  
Zhangyang Kang
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Theoretical Analysis ◽  
Flow Field ◽  
Velocity Distribution ◽  
Velocity Vector ◽  
Flow Model ◽  
Simple Algorithm ◽  
Quick Scheme ◽  
Burner Nozzle

The angle of burner nozzle is an important factor for burning of ultra-supercritical tower boiler. In this paper, gassolid multiphase flow and combustion in 1000MW Ultra-supercritical tower furnace were of the numerical simulation under different conditions. The angle of burner nozzle deflects downward, and the angle is 0°, 3°, 6°, 9° and 12°. Flow model is turbulence and SIMPLE algorithm and QUICK scheme are employed. Through theoretical analysis of different conditions (the velocity distribution in different face; the velocity vector in furnace; the temperature in furnace; the NOx, CO2 and O2 emissions in outlet), finally, the law of the angle of burner nozzle for flow field and heat transfer in ultra-supercritical tower boiler is found.

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