I`m Curious Bradford

Uni R_2

The industrial style rads are found in areas far from where the examination room was. If this is the house I think I saw with Dave it looks like the just scoured the local region for used rads and then crudely built what they couldn't find. The joys of retrofits.

Unknown

There is a guy,

in a thread wondering about steam double tier element outputs.
Not long ago I saw your "take" on double tier HW rads.
I think they`re quite different.
Would a double-tier steam rad radiate 480 BTU sq.ft., or simply 240 X the linear length regardless of the tiers?
Any thoughts?, the Canadian(not Steven Harper), is asking LOL.

Dave

Brad White_191

Hi Dave!

Regardless if they are steam or water, you will get less than 2.0 x single-element output if they are in series (stacked). You will get essentially twice the output if they are "side by each".

The reasons are the same; when stacked, the first element benefits from the highest possible Delta-T (the proverbial "65 degree air off the floor") versus the average element temperature. That second tier sees pre-warmed incoming air so the output is about 50 to 70% less for that element. In total you will have between 130% and 150% of a single-element assembly.


Naturally, height figures into this, as does fin density, which element is served firstly and so-on.

When two elements are in parallel (side by each, I love saying that), each element acts as a single element with full benefit of cold air off the floor. There is some slight diminution due to proximity and of course your element should be set back two inches from the glass, to allow air movement, but that parallel arrangement gets you the best bang for the buck. (Le Bang pour le Buque

tim smith

Or in German, ya ya.

mehr fürs gleiche Geld

Unknown

So,

trying to decipher an EDR rating for these sounds like a nightmare.
I think I may have asked this before.

Dave

Brad White_203

There are tables

for such radiators, but I have never seen one so beautiful as that one, Dave. Is it one of yours? Where is it?

Unknown

You think

these are beautiful Brad? They are in a large house here in town that was originally built for a doctor. I think this CH system was added after as any rads above the first-floor are all located on inside walls.
#2 is disconnected, its located on the 3rd floor which I believe was the servants quarters. UniR knows the place, we were given a tour.
The homeowner tried to spruce them up a bit as you saw.

Personally,,, I think they`re butt-ugly regardless of the effort LOL!

Dave

Brad White_203

Beautiful Radiators

Well, Dave, my point was that usually they are butt-ugly but the final treatment made them look so much better. For an industrial radiator that is.

We have lots of these here in Boston in older warehouses, years of lead paint and crud, but durable. Had not occurred to me that they could be cleaned up so nicely.

Larry C_20

Soap dispenser looking valve?

Dave,

What is the soap dispenser looking "thing" above the isolation valve?

Larry C

Charlie from wmass

It is an air vent for the radiator.

Charlie from wmass

Maybe this will help?

Steamhead (in transit)

Makes sense

that it was a doctor's house. It's much easier to keep a pipe coil clean and sanitary than the usual cast-iron rad. But both are far cleaner than ductwork will ever be.......

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tim smith

Hind end Ugly, I would have to agree. Tim

Unknown

I would say

you are right UniR. Either the owner(at that time) was tight as bark to a tree, or this was installed by Larry, Curly & Moe.
Check-out the pipe hangers, ex. tank mounting, welded patches on the boiler & the clearly marked header on the supply.

On 2nd thought, perhaps both scenarios applied. JMO

Dave