Liquid fuel system

[jetmanjoe]

Aug 7, 2023 17:01:53 GMT -5 racket said:

As a rough guide the engine runs an overall 60:1 A/F ratio , so the air mass flow /min is our fuel /hour.

Our inducers flow ~12 lbs/min/sq inch of area , so for say a 3 inch inducer of ~7 sq ins area , that works out at 84 lbs/min , so our fuel nozzle will need to flow 84 lbs/hr , divide by 6.7 lbs/US gallon for kero and we end up with 12.5 US GPH , but that would assume you have the "rated" 100 psi drop across the nozzle , if we were running 30 psi from the comp then you'd need 130psi fuel pressure .

Hope this helps

Cheers
John

 Hi John,

What about nozzle spray angle? Would a solid cone spray pattern at 90 degrees be best to have the spray spread out as much as possible and even touch the inside wall of the hot flame tube before mixing with the first set of holes. Also does anyone know of oil burner nozzle suppliers in Australia?

[jetmanjoe]

May 19, 2023 3:44:19 GMT -5 phoenixsilver said:

Quite hard to get your hands on a 8-90 degree spray cone, hollow pattern, 10GPH+ oil burner nozzle in the UK. Any suggestions? Was thinking of getting a 10-12GPH nozzle myself then increasing the pressure in order to achieve the higher burn rate of ~15GPH that I'd be looking at later on.

(Sorry for hijacking the thread)

I am currently talking to a supplier in America as I need nozzles sizes 12 to 20 GPH. I will let you know how I go.