BTUs for this radiator?

Patrick McGrath

Hi folks:



Can anyone help me determine the BTUs for this radiator?  it is 30 inches high, 30 inches wide, and 24 inches deep.



It says USRADCORP on the side.



Any help would be appreciated!



Patrick

DanHolohan

It would be 35 square feet EDR

That's what they show for their Capitol, four-tube radiator, although that's for one 32" high (there's no 30"-high model) Are you measuring from the floor?

Steamhead

That's a 4-column radiator

closest I can find is 65 square feet, which is for a 32-inch rad- maybe someone cut the legs off shorter? 

FJL

Capitol Rads

Here is the link of the numbers for Captiol Rads from the Library here.  It gives you the different measurements for the rads:  http://www.heatinghelp.com/article/158/Radiators/1281/U-S-Capitol-Radiators

You will need to download the PDF and turn to the page with 4-tube rads.

DanHolohan

Big difference from what I'm showing.

???

Patrick McGrath

It was in the snow!

So, it very much could be 32".  I was freezing to death measuring it.  The snow was hard packed, so my tape may not have gone all the way to the ground.



I am in need of a 10-12,000 BTU rad.  What is the square foot to BTU conversion formula?



Thanks all for the quick responses (and Dan himself!  Rarified air!).



Patrick

Steamhead

On steam

this rad will produce 15,600 BTUH. On hot water with boiler water at 180 and a 20°  ΔT it will produce 9750 BTUH.



The slightly rounded top and thick outer vertical members of each section ID this as a column rad rather than a tube type. Also it is much deeper, front-to-back, than a 4-tube rad, and I'll bet it has a 3-inch section spacing rather than the more-usual 2-1/2". Look at the PDF file that FJL mentioned, with its pics and dimensions of tube rads, and you'll see the difference.

Patrick McGrath

Thanks!

Thanks Steamhead!  That is good help.



My radiant heat specialist did a heat loss calculation on my house, and I found a room that was under-radiated.  He informed me that the line to that spot can handle up to 13,000 BTUs, so I assume this one won't work out for me.



I attached the heat loss calculations (I did this for another post, so I hope I am not bothering you guys).  The room in question is "Katie's".



I am overshooting her room needs - I'd rather have more than less in this room, and I figure that I can slow down the rad with venting if it's too warm in there.  This room faces the wind and has really big windows in it.  We just had the house insulated, which helped a bit.  The rad in her room is double vented right now with Gorton Ds, so I really can't pull any more heat from it.  I tried a Heatimer Varivalve, too.



Thanks again for your help!

Steamhead

What size

is the pipe that leads from the main to the rad? 

Patrick McGrath

pipe size

Steamhead - the valve coming into the rad is 1 1/4".  Is that what you mean?

I can take a pic of it tomorrow night if need be.

Pat