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Infrared pics of radiator, again

hot_rod Member Posts: 15,066
Though I would see how a radiator heated with just about 1/4 of it filled with water, starting with 63° fill water.

Within 20 minutes you could feel heat convecting up thru the sections. After about an hour, conduction had the very top at about 90° and the entire radiator was warm and convecting from the lower section at about 116°. So the top at 90°, bottom at 116° average temperature 103° to calculate heat output?

Makes me wonder how it would look if the top sections were not connected, like a steam radiator.
I suspect after a period of time conduction warms the entire iron vessel.

I'll look again in an hour or two.
Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream


  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,307
    Hot Rod's workshop. 1/2 pex runs to poor unsuspecting radiator. Camera ready. 

    Love it! 
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
    JUGHNE Member Posts: 9,001
    edited November 2020
    Boys and off....I am jealous!

    What would be interesting is a video of a steam only (no top connections) radiator attempting to heat as a hot water rad.
    Maybe with an air vent where the steam air vent is located...with and without.

    We have all seen a steam only rad with air vents drilled into each was in the salvage yard BTW.

    To all...have a good Thankfull day!