Expansion tank sizing?

Discussion in 'HVAC Heating & Cooling' started by armand, Jun 5, 2008.

  1. armand

    armand New Member

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    Hi guys, I am an engineering technologist that is new to the field. We are doing a retrofit on some apartment buildings and we need to switch over from an older style expansion tank (without diapraghm) to the new style. We were wondering if there is a quick easy method to use the old one's size to select a new one.
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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  3. armand

    armand New Member

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    Oops, my bad, I forgot to mention that the main problem is we are trying to size it without knowing the sytem volume, thus the reason for using the old one's size.
  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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    21,892
    Location:
    New England
    Putting in an oversized one wont' affect system performance, but adds to the costs and space requirements.
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