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Comprehesive Boiler Manual Jan 2019

A Preview of B&CT Training LLC - Boiler Systems I & II Comprehensive Training Manual. We can customize training manuals to include your specific equipment. The outline is specifically designed to assist with compliance to V.A. Handbook 1810 requirements. For more information please call 405-401-0156 or see www.b-ct.net

A Preview of B&CT Training LLC - Boiler Systems I & II Comprehensive Training Manual. We can customize training manuals to include your specific equipment. The outline is specifically designed to assist with compliance to V.A. Handbook 1810 requirements. For more information please call 405-401-0156 or see www.b-ct.net

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Convection<br />

iii. Flame<br />

Diffusion Flame<br />

All combustion air comes<br />

from outside of the flame.<br />

With too little air inside the<br />

flame envelope, the gas<br />

mixture will not burn<br />

completely. The unburned<br />

carbon particles become<br />

heated to glowing, making<br />

the flame luminous.<br />

Hottest part<br />

(non-luminous)<br />

CO2<br />

1400˚C<br />

H2O<br />

If the outer zone is disrupted, complete<br />

combustion is also disrupted and soot<br />

deposits form (unburned carbon)<br />

Outer Zone: Complete combustion of soot<br />

particles and any remaining wax vapor<br />

Unburned carbon particles (soot)<br />

glow from the heat energy.<br />

1200˚C<br />

O 2<br />

1000˚C<br />

800˚C<br />

Partial Combustion: Fuel Rich = not enough<br />

oxygen, soot particles form<br />

Outer Zone: Complete<br />

combustion of wax vapor<br />

O2<br />

600˚C<br />

Conduction<br />

O2<br />

Dark Zone: Pyrolysis of<br />

wax to combustible vapor<br />

= Straight-chain Wax<br />

= 14,200 btu/ft 3<br />

Diffusion flame<br />

in microgravity<br />

(Space Station)<br />

No updraft of<br />

air flow<br />

P a g e 80

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