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Peerless 63 design

STEAM DOCTOR Member Posts: 2,040
Please see attached pictures. Was wondering about the interesting arrangement of pins. Seems like the designers eliminated some of the pins on the top of the section. Basically one side has pins and one side doesn't. Except for nearer to the steam chest. Nearer to the steam chest has a regular double set of pins. Wondering if they are concerned about overheating the empty top of the boiler. The reason why the Steammax eliminated the pins entirely on the top of the boiler. Peerless seems to have a mix. Full pins near the steam chest, where there is steam to absorb the heat, but a reduction of pins on the top of the sections not near the steam chest. Just a thought.


    STEAM DOCTOR Member Posts: 2,040

  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 8,166
    edited April 2023
    50+ years ago I might say that there is some engineer with a slide rule on a drawing table in some R&D department of a boiler manufacturer with lots of books all around him, scratching his head and telling his boss that we might be able to save on cast iron of we don't put pins all the way up to the top. Then if anyone asks about that, just tell them that according to our calculations the efficiency of the heat absorbing interaction between the media below the water line and the media above the water line have thermodynamic differences in the ability to absorb, transfer, and release the potential energy within the confines of the calculations available at the time that we designed these particular cast iron sections. It's all explained in sub paragraph B of section 48 of the laws of thermodynamics as stated by the supreme court of the United States in 1929 and the British thermal unit for the court of King James in 1768.

    But today it is just an algorithm on some computer somewhere.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • yellowdog
    yellowdog Member Posts: 159
    looks to me like they did it so they had a place to put their casting information at the top of the section. sometimes theres a lot simpler reason than you think.