you learn something every day! I thought appliance temp was -- well an Appliance Temperature
Next time -- Ill break the Prozaks in half
coaledsweat wrote:By the way, how on earth does the fire stay alive? There can't possibly be any air coming from underneath through 5-6" of ash without that huge huffer going.
Yanche wrote:It stays alive because it so hard to put out a previously robust coal file, especially when it surrounded by hot boiler water. The hot water reduces the temperature gradient from the burning coal to it's surroundings. That allows it to burn even longer compared to what it would be in open air. Hats off to the engineers at Penn State that originally designed it.
coaledsweat wrote:Yanche wrote:It stays alive because it so hard to put out a previously robust coal file, especially when it surrounded by hot boiler water. The hot water reduces the temperature gradient from the burning coal to it's surroundings. That allows it to burn even longer compared to what it would be in open air. Hats off to the engineers at Penn State that originally designed it.
Must have been the graduating class with The Lord of The Dark and Rube Goldberg. They did one hell of a job, robust doesn't really describe the fire for me. More like hell on earth. I notice a huge swirl of blue flame rising out of the coal when the blower runs. Aside from the volcanic lava glowing below it, the swirl of blue looks like a high horsepower NG burner's Morrison tube. I would hate to think what it is like with the blower spinning 2.5 times faster than it is.
It never puts much heat up the chimney, it averages 110-145*. When I humped it real hard for a while it ran up to 210*. My handfired with the tiny blower (1/10 HP?) would run 5-600*. It is a real bizarre machine as it seems to defy coal burning basics.
If you stare at the fire while it is running, you can see the coal falling through the fire like its on a conveyor. All other stokers feed the coal, this one shaves the ash. Slicker than lard on a doorknob.
Yanche wrote:How about:
Integrated modern electrics controls, demand related variable speed blower, out door reset controller.
whistlenut wrote:Wooohhhhhh. The belt is designed to be twisted and run that way. DO NOT change a damned thing. You may think you were smarter than the designers, but check out the logic first. Yes. AHS did away with the twisted belt route by adding separate motors for blower and for ashing, but that is because the don't drive a feed auger with the two groove pulley that runs a twisted belt for gear box power.
AA may not be a tunable as the EFM or the new Royall, but they have been around for 70 years and still sell all they can make. You can find a 1950's unit, disassemble it and find it to be nearly perfect inside. The steel must have been better back then..... Cabinover has an AA that was neutered by removing the auger supports and gearbox, etc. and has a separate motor for the ashing grate controlled by the original anthrastat.
PS: The AA 260 fan WILL 'suck the chrome off a trailer ball! It is not a toy, or a half hearted attempt to bun coal. It is the real deal! Hope you have good demand for the BTU's generated, the puppy will idle and still make 80K!
Getting used to the tinkle/tinkle of of the auger yet?