Steam Convectors

Tom Ritter

am trying to size a replacement steam boiler for an
apartment complex in Fair Lawn, NJ. The existing 100
hp firetube boiler was damaged during a rainstorm when
the boiler room wall collapsed. I am specifying the
use of Weil McLain Series 88 boilers as replacements.
I just wanted to perform the heat load calcs to verify
I am not going for overkill with the new boilers. I
received some literature from Weil McLain on how to
properly size Steam Boiler Systems by calculating the
square feet of the radiators connected to the system.
It seems like a pretty straightforward formula but
when I visited the apartment complex there were no
radiators being used but rather convectors, like those
used in hot water baseboard heating. I have attached
3 pictures showing what I mean by this. Essentially
there is a 1/2" copper tube that has fins connected to
it, 7 fins per inch. How do I go about calculating
the square foot of heating capacity for these
convectors? Thank you for any help you might be able
to offer.

John@Reliable

www.burnham.com/pdfs/htghelper.pdf

Page 45 will give you information you need Hope this helps