National Radiator (Art) EDR calcs

SteamedInWharton

I had been doing my EDR calcs on my radiators (~1935 house) and found that nothing was really matching the standard charts (the widths and lengths of the sections didn't seem to match the standard tables). Essentially what I have seems to be smaller than the thin tubes. Finally after looking through old radiator catalogs in The Museum, I realized the American Radiator ARCOs seemed to match the dimensions. Later I learned that Burnham Slenderized radiators should also be a pretty close match to ARCOs.

Finally I took a real close look at a radiator and by picking off a little paint and saw "NATIONAL ART RADIATOR" which I interpret to mean National Radiator's Art line. I haven't seen the Arts in any available online radiator calculator. Most catalogs I've seen are no more recent than the early 1930s.

Here's the numbers I came up with using ARCO tables:

3.5” wide x 1.5” long (40 sections = 60 inches) 3 tube radiator, 19” high = 1.1 sq ft/section
3.5” wide x 1.5” long 3 tube radiator, 22” high = 1.3 sq ft/section
4.75” wide x 1.5” long 4 tube, 19” high = 1.4 sq ft/section


Does any one have Art values and know if they differ at all from ARCOs?

Fred

If they are cast iron and match the dimensions of the ARCOs, the EDR is going to be the same. Do you have a copy of Dan's Radiator EDR book ? You can buy a copy in the store on this site. A handy reference tool to have on hand.