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Calculating Flue Gas Losses, Shell Boiler

  1. I am currently performing an acceptance test for a newly installed gas fired shell boiler. I am following the British Standard "BS EN 12953-11:2003".

    I have encountered a problem with equation (8.5-2) found on page 16 of the document described above. This problem being that a value of enthalpy is subtracted from itself, thus equating it to zero. Surely if this was correct then a value of zero would simply suffice within that section of the equation. The value i decribe is highlighted in the two images attached.

    I have contacted the British Standard however it needs to run through a committee before they can produce an answer. Part of me does doubt my thoughts as it published ten years ago and a revised copy has not yet been published. Thought i'd best check with you guys though.
     

    Attached Files:

  2. jcsd
  3. SteamKing

    SteamKing 8,931
    Staff Emeritus
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    It's probably some kind of typo.
     
  4. I've found that this document has many typos. You'd think a british standard that was published ten years ago and has been confirmed wouldn't contain silly little errors like that.
     
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