I ran across this video that shows some of the "off-tour" areas of the Battleship USS Iowa. One of the areas was the engine and boiler rooms, and they show some of the details of one of the burners used to fire the boilers. Pretty interesting arrangement. See 22:00.
I have only watched one of his videos, but from a glance at his cover page, he seems like a typical y-tube celeb. Glad he got the inner details of that burner nozzle on film, that is cool stuff. I am not sure he knew what he was looking at, but perhaps he did. He kept knocking his head on the pipes all the way through the video. There are benefits to being short (in height only) like myself.
So the channels are cut in a stationary disc to spin the oil so it will form a spray?. I wonder what pressure is required to get that happening?.
For boilers, I think it would depend on the dimensions of the boiler combustion chamber. Some boilers are long and narrow with rectangular combustion chambers, and some are very short with cubical combustion chambers (Scotch). I would guess the longer the combustion chamber, the higher the air/steam pressure, so that there is enough velocity to propagate the flame to the back of the combustion chamber along a relatively narrow path, and vice versa. My guess on the pressure is 100 psi or less, but check me on that; don't know for sure. Edit: This site actually shows the flame propagation from a large burner nozzle (in the multi-photo GIF that plays at the top of the screen). http://www.coen.com/ You can clearly see the results of the grooves that are cut in the nozzle tip. Some large oil burners on this site: http://www.dunphy.co.uk/ Another burner maufacturer: https://www.johnzink.com/products/burners/featured-products/ with an interesting smaller design here: https://www.johnzink.com/wp-content/uploads/PB-13207-ST-2-Pilot_Final_LR.pdf Large and medium sized burners: http://www.weishaupt-corp.com/produkte/brenner/mittel-und-grossbrenner-kw Rotary cup technology burners: https://www.saacke.com/products/burners/skvg-a/ Burner overview: https://www.saacke.com/products/burners/ A wide variety of nozzles here: As with a paint sprayer, changing the nozzle configuration changes the spray pattern (wide, narrow, etc). http://www.monarchnozzles.com/index.php/en/
