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exposed fin tubing

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SeanBeans
SeanBeans Member Posts: 520
in Strictly Steam
looked at a job that had 1 1/2 pipe with filings that heated a big garage.

is this in E.D.R.?

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  • Paul S_3
    Paul S_3 Member Posts: 1,261
    edited October 2017
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    i usually find something thats close to it, size length depth etc.....you should be fine
    ASM Mechanical Company
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  • Jamie Hall
    Jamie Hall Member Posts: 23,323
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    And if you want to be very close, you can get the area of each fin in square feet (count both sides!!! but subtract for the hole for the pipe) and add up the number of fins per foot, multiply the two, and that's your EDR per foot. You can even add in the area of the surface of the pipe, if you want to get even closer.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Dave0176
    Dave0176 Member Posts: 1,177
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    Looks like 1-1/4 steel finned baseboard, I’ve seen ratings around 980 BTU per foot at 1 psi.
    DL Mechanical LLC Heating, Cooling and Plumbing 732-266-5386
    NJ Master HVACR Lic# 4630
    Specializing in Steam Heating, Serving the residents of New Jersey
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  • SeanBeans
    SeanBeans Member Posts: 520
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    wow, I have about 50' of it
  • SeanBeans
    SeanBeans Member Posts: 520
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    BTW, the boiler is insulated...

    .

    delta TZmanSteamFTW
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,005
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    Betcha' that saves a bunch of energy.

    Looks like a condensing boiler, no?
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • Leon82
    Leon82 Member Posts: 684
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    WOW lol
  • JUGHNE
    JUGHNE Member Posts: 11,062
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    Needs a little more foil tape though.

    This is from a 1954 print:
    Vulcan-Hartford convectors;
    1 1/4" iron pipe
    4 1/4" square steel fins
    1/4" spacing on fins
    6.9 EDR per foot
    one 10' length is labeled 69 EDR
    one 14' length is labeled 96.6 EDR

    These are steel convectors with cabinets 16 to 36" tall.
    The height of the convector will enhance the air flow, I don't know if it affects the EDR.

    If your garage elements had a plywood panel 6" off the floor and open at the top you might get some convection going.
  • hot_rod
    hot_rod Member Posts: 22,158
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    Fin tube works much better with an enclosure, it becomes a convector as the cover allows cool air in the bottom, heated air out the top. Without any enclosure you loose a lot of the convection movement through the fins.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • SeanBeans
    SeanBeans Member Posts: 520
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    no cover on the entire length. building is somewhat neglected
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,540
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    Somewhat neglected?? I guess!! Love the gear clamp holding the wiring to the post. Run what you brung I guess.

    That insulation is soooooooougly. Wonder if it ever froze up????

    If you measure the fins and the pipe size and the spacing between the fins. Then look in some radiation catalogs for something close to that.

    Look on line, I think Mestek owns Vulcan (used to be just down the road in CT) & Sterling Radiator that @JUGHNE mentioned or Call Tunstall Associates and they can help you out.

    As @hot rod mentioned , without a cover the output is reduced (no chimney affect) and stacking elements while commonly done does reduce the output of each element
  • Alan (California Radiant) Forbes
    Alan (California Radiant) Forbes Member Posts: 4,005
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    I wonder what the output is without the enclosure? Had the installer known this? Maybe he knowingly installed enough de-rated fin tube to heat the garage?
    8.33 lbs./gal. x 60 min./hr. x 20°ΔT = 10,000 BTU's/hour

    Two btu per sq ft for degree difference for a slab
  • Keith M
    Keith M Member Posts: 78
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    Slant/Fin publishes bare element ratings for elements suitable for bare element installations. We have the ratings in our Finned Tube Catalog.
    Looking at the picture it appears it is Slant/Fin element. We manufac
  • Keith M
    Keith M Member Posts: 78
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    Slant/Fin manufactures 3 elements using 1 1/4 inch schedule 40 black pipe. Two of the elements have 4 1/4 inch square fins. The S-532 has 32 fins per foot and the S-540 has 40 fins per foot. Rating for two tiers of S-532 at 1 PSI steam is 1950 Btuh/ft. Rating for two tiers of S-540 at 1 PSI steam is 2210 Btuh/ft.
    Slant/Fin H-6X is 1 1/4 inch schedule 40 black with 48 fins per foot sized 3 inch by 3 1/4 inch fins. Two tiers of H-6X deliver 1290 Btuh/ft at 1 PSI steam.
    I hope this helps.
    Keith Muhlmeister
    Slant/Fin Corporation
    516 484 2610 ext. 367

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