Another 7 days...
On Monday we changed the motor pulley from 1.5" back to 2". I couldn't figure out an easier way to increase the air to get a better ash to black stuff ratio.
This did work, the ash this week looks better. Our feed rate is now 5.5 pounds per hour rather than 3.25 pounds. Let's find out what it did to our coal consumption.
Stoker run time at the new feed rate, From Monday on, is 22.8 hours times 5.5 = 125.4 pounds, 20.9 pounds per day.
Well, we went from 14.16 pounds per day to 20.9 pounds per day. That's not good.
Lets see what it did to the ash percentage.
28 pounds of ash, 140 pounds of coal (that's with Monday added in) = 20%.
Well, we're down from 32% to 20%. Is it worth it? Probably not, but we'll run it for another week just to be sure.
Air is still on 11 and that is probably not quite enough.
Current settings;
Feed Rate = 2.0" drive pulley = 5.5 pounds per hour?
Air = 11.
Aquastat = LO = 155, HI = 200, DIFF = 10.
Timer = 2 minutes every hour.
-Don