The injector nozzle on my hot water, fuel oil fired heating system can be changed to nozzles with larger or smaller orifices. Each nozzle is marked in GPH (Gallons per hour)
I'm well aware that there is an optimum air fuel ratio but wish to see if I can reduce the fuel oil consumption by installing a smaller injector nozzle.
Might I expect to see a reduction in consumption by swapping out the current jet for a smaller one thus making the mixture leaner?
I'm concerned that a smaller jet might produce less heat and the only result will that the system will only run longer before turning off. If that should be the result there might be nothing to be gained by a smaller jet if the total BTUs generated are the same but over a longer period.
One the other hand, there is a possibility that the leaner mixture will run hotter and thus be for efficient.
Any Suggestions?
Thanks
LJ.
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