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Thomas:Don't know if you've already covered this or not, but I've got a couple of questions.1) What are you using for a heating element?2) How did you determine if that heating element would be large enough to supply the volume of steam you need at the pressure you want?I've been kicking this idea around in my head for a while, and I've found information that will hopefully allow me to convert Lbs/hour of steam into Watts. From this I SHOULD be able to determine the heater size needed to run a specified size of engine at a given RPM. BUT, I don't have a lot of confidence in my calculations. What can I say, I'm a EE, not an ME - I wrangle angry pixies for a living.Don
I assume C is your factor of safety. For our UK calculations 0.16 to 0.12 would be used eg a factor of 6-8 but depends what your state code requirsWhat calculations have you done for stay diameter and spacing?
Stays are those essential side to side, top to bottom and sometimes end to end supports which stop the flat sides of any boiler bulging out like a balloon. You will need to decide the number, the diameter and the spacing of these stays for your proposed boiler. What does your State boiler code say?Mike
Baffles will do a similar job to stays, I had not seen them on the earlier drawings you posted so assumed there was nothing there.The stays would be internal if you had them, basically a rod passing right through and welded at the ends externally, either flush or slightly protruding. Probably easier to weld than getting down inside a tube with your welding gearJ
Thomas, kudos on a "different " boiler design. I was a boiler/ welding inspector on the first Gotatverken designed recovery boiler in the US. The old timers said it would never work with just one drum, but , we were burning black liquor and generating when I left. Cletus