Name that Radiator?

micahmc

I hope this is the right section to ask this:
I'm trying to figure out the EDR for four steam radiators but am having difficulty determining the brand (in order to try to look it up). I'm hoping these will be a good fit for my apartment since I'm missing radiators in four rooms. I'm also trying to figure out an accurate heat-loss for each room (to determine the right EDR) but I'm no expert in that either.

None of these sizes/EDRs were listed in the Lost Art book.

Any help in figuring out these radiators brands (and ultimately EDRs) would be greatly appreciated! Happy New Year!
Radiator 01: Five Columns, 11 Sections, 38" high; Brand=?; s/f per section=? EDR=?

Radiator 02: Two Columns, 3 Sections, 38" high; Brand=?; s/f per section=? EDR=?

Radiator 03: Two Columns, 3 Sections, 36" high; Brand=?; s/f per section=? EDR=?

Radiator 04: Five Columns, 3 Sections, 38" high; Brand=?; s/f per section=? EDR=?

Fred

#1 looks like an American or Richardson or National, 5sf. per section, Total EDR 55sf.
#2, possibly a Pierce, 4sf. per section, Total EDR 12sf.
#3 Looks like a Plain Radiator Are you sure about the height? I can find 38" but no 36"
#4 looks like a Richardson, possibly American or National, 5sf. per section, Total EDR 15sf.
There are several brands that are very similar in appearance so the specific brand may or may not be correct but the EDR for each is the same and that is what is important.

micahmc

Fred, THANK YOU!
That was very helpful! Is this typically the best place/section to post these type of questions?
Also, I'm sure it's on the Wall already, but is there a simplistic way for an amateur like me to run a basic heat-loss calculation to determine the proper EDR needed for my rooms? I imagine the actual measurement will be in BTUs though so I'll have to do some conversions.

Fred

micahmc said:

Fred, THANK YOU!
That was very helpful! Is this typically the best place/section to post these type of questions?
Also, I'm sure it's on the Wall already, but is there a simplistic way for an amateur like me to run a basic heat-loss calculation to determine the proper EDR needed for my rooms? I imagine the actual measurement will be in BTUs though so I'll have to do some conversions.

Search on Heat Loss Calculator and I'm sure you will find several sources for one. When you get the BTU's calculated just divide that by 240 to convert to sq. ft. of EDR.

micahmc

Perfect. I found some good stuff after doing what you suggested. Thank you so much again Fred.

Fred

Hatterasguy said:

micahmc said:

Also, I'm sure it's on the Wall already, but is there a simplistic way for an amateur like me to run a basic heat-loss calculation to determine the proper EDR needed for my rooms?

This question begs additional questions:

1) Your radiators are existing. You have whatever EDR they deliver.

2) A heat loss on a building with steam is for informational purposes only. It has no bearing on the size of the boiler or the operation of the system. Reason for chasing it?

He has four rooms that are missing radiators and he has located some radiators and is trying to determine if they are large enough (or too Large) for those rooms.

micahmc

Hatterasguy said:

micahmc said:

Also, I'm sure it's on the Wall already, but is there a simplistic way for an amateur like me to run a basic heat-loss calculation to determine the proper EDR needed for my rooms?

This question begs additional questions:

1) Your radiators are existing. You have whatever EDR they deliver.

2) A heat loss on a building with steam is for informational purposes only. It has no bearing on the size of the boiler or the operation of the system. Reason for chasing it?

I appreciate the comments. Maybe you can provide some further insight as well. I actually don't have any radiators in my rooms. They were removed long ago - probably because someone got too hot, thought they didn't need as many in the apt, etc. so I went on Craigslist here in Chicago to find some that might fit what I need. I also have a couple spares that are in a vacated apt next door.
So I am indeed trying to find radiators that provide the proper amount of EDRs for the rooms I have. But in order to do that I also need to calculate how much heat these rooms need.
Is there something else I should also be checking?
Thanks again.

Steamhead

Double-check the section spacing on rads 1 and 4. You can do this by measuring the distance between the centers of adjacent sections. These are American "Corto" rads and the early ones were different.

If this dimension is 2-1/2", the charts in E.D.R. for similar types of rads will work fine.

But if it is 2", they have entirely different ratings, which are not in E.D.R. You can find them here:

https://heatinghelp.com/heating-museum/american-radiator-companys-corto-1922/

The others appear to be standard column rads. But double-check their dimensions to be sure. The "Star" radiators shown on page 24 of this catalog had different dimensions and ratings:

https://heatinghelp.com/heating-museum/sun-radiators-and-heaters/

The above are from the site's Heating Museum. Dan is right- it pays to wander off the Wall.

Captain Who

You also need to match the total EDR to the boiler rating. Whatever your heat loss calculations indicate you need in those 4 rooms may not be as important as that. Anyway, you've got 5 equations and 4 unknowns. You may need to play with those radiator sizes to satisfy the proper load for the boiler.

SWEI

micahmc said:

I actually don't have any radiators in my rooms. They were removed long ago - probably because someone got too hot, thought they didn't need as many in the apt, etc. so I went on Craigslist here in Chicago to find some that might fit what I need. I also have a couple spares that are in a vacated apt next door.
So I am indeed trying to find radiators that provide the proper amount of EDRs for the rooms I have. But in order to do that I also need to calculate how much heat these rooms need.

Yes, you do need a room-by-room heat loss calculation. Then you need to conduct a parametric sizing process to determine which radiators belong in which rooms. This may lead you to buying additional radiators or perhaps even shrinking some of the ones you already have on hand. The result will be a balanced system which may or may not match your calculated heat loss number -- But -- If you get it right, you will end up with a comfortable and efficient system.

micahmc

All of this information has been incredibly helpful. I especially appreciate the added suggestion about comparing the output of the boiler to the existing radiators and then dividing the remaining EDR amount among the rooms without radiators (taking into consideration their heat loss as well).
I just signed up for the PM in Chicago - maybe I'll see some of you there?!

Thanks also for the tip on checking the section spacing! I didn't think of that!

wmtandson

Maybe someone can help me identify this set of pictures

Steamhead

Look at the name again. I bet you find it's "A. A. Griffing". If so, that's a "Bundy" radiator.

BTU

How to calculate EDR on this baby? Also an A.A. Griffing brand