EDR of straight pipe?

Dsisson

I have "The Lost Art of Steam Heating". I remember reading in it *somewhere* that one can use uninsulated pipe as a sort of a radiator for small spaces. I also seem to recall that it had a table that listed the EDR of different pipe sizes per foot. But for the life of me I can't find it in the book and I even wonder if I was imagining it. Can anyone point me in the right direction for a table that lists the per foot EDR for black pipe?

Jamie Hall

Why bother with a table? A few seconds with your tape measure and a friendly calculator will give it to you. Measure the circumference of the pipe in inches. Multiply that by 12 (the number of inches in a foot) and divide by 144 (square inches per square foot) and there you are. The EDR of a foot of your pipe.

Dsisson

Thank you - as I understand it:

EDR of steel sched. 40 pipe (example)

pipe size = 1"

diameter = 1.315"

EDR per foot = 0.344

correct?

EBEBRATT-Ed

yes. 3,14 (pie) x 1.315 (diameter) = 4.129 x 12"=49.5492

49.5492/144=.344

ted_p

Here's one:



And Here's the link:
Carbon Steel, ANSI Schedule 40 (in) Datasheet

Use the numbers in the "External Surface Area" column.