Help Figuring our EDR for unusual 1864 radiator/convector
I recently became a steward of a grand 1874 house. And of course the first step is bringing the steam system up to my standards. It actually works reasonably well - no hammer and most radiators heat up pretty quickly from half-million BTU WM 78. But also set at 10psi and I'm sure is using way more oil than necessary.
But my first step is figuring out the radiation. There's a number of more common column and slenderized rads, but there's also quite a few of what I presume to be the original radiators from when the house was built. I have never seen anything like that(and couldn't find them in Dan's book) Very interesting design and the only thing I could make out on them is the patent date of 1864. Here is one, I hope someone can help me at least ballpark their EDR rating.
Comments
-
It will take some measuring and some math -- but keep in mind that one can come up with a pretty good approximation of EDR by regarding it as the same as the actual surface area.
So... for the pipes -- vertical tubes and headers -- just figure the surface area normally (circumference of the tube times length -- converted to square feet, of course). Then the little fin like things are added on: figure the area of each fin (outside diameter squared times .785 - inside diameter -- the diameter of the tube -- squared times .785. Double that and you have the area of a fin. count the fins (easiest to count the fins per inch and multiply by length) (again, covert to square feet) and add it to the tubes. Will it be exact? No. Will it be close enough? Sure will.Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England1 -
Wow!! I will bet those heat like a SOAB.
I agree with @Jamie Hall method.
There is another way but it's not practical. Disconnect it and drop it into a tank of water. Measure the water volume before and after dropping it in. Plug the connections so no water can get inside.0 -
With pressure at 10psi, why isn't that your first thing to address? Not judging, just asking
NJ Steam Homeowner.
Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
See my sight glass boiler videos: https://bit.ly/3sZW1el0 -
I can even go with the paint method, but I'll stick with the math That was my backup plan anyways, but figured it wouldn't hurt to try the easy way out.0
-
I don't think that would be accurate. A smaller radiator with a lot of surface area (like the ridges on this one, or one with more columns for example) might have more EDR than a larger volume radiator with smooth surfaces, no?EBEBRATT-Ed said:There is another way but it's not practical. Disconnect it and drop it into a tank of water. Measure the water volume before and after dropping it in. Plug the connections so no water can get inside.
NJ Steam Homeowner.
Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
See my sight glass boiler videos: https://bit.ly/3sZW1el2 -
I've seen those before but can't remember what they're called. Is there anything on the end caps at the top?All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
I've seen them before too. I recall a thread on here two, maybe three years ago with some pictures of them. Might be worth a search. I just don't know what key word to narrow down the number of hits.0
-
It is, about to order the vaporstat and main vents. But while I wait, I like to have some data to look at it.ethicalpaul said:With pressure at 10psi, why isn't that your first thing to address? Not judging, just asking
1 -
Should be able to search the Patent Office's site using the year and the word "radiator".All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
It's a Clogston radiator. We have one on display at The General Society of Mechanics and Tradesmen. If you're going to Wetstock you'll see it then. Here's what our archivist, Angelo Vigirito, found on it in his research. Sadly, no ratings.
Retired and loving it.1 -
Thank you ver much Dan!0
-
-
The ratings have to be out there somewhere.................All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
-
@vvzz2 I found it. It's 3 Sq. Ft. per vertical section. It's in John Mills' beautiful book:
https://www.google.com/books/edition/Heating_and_Ventilating_Buildings/Fxi0_Exb3PQC?hl=en&gbpv=1&dq=clogston+radiator&pg=PA97&printsec=frontcoverRetired and loving it.1 -
Excellent!
Actually, that's Rolla Carpenter's "Heating & Ventilating Buildings" and he cited John Mills as his source for the table. The book is in the public domain so you can download and save the PDF file.
I pulled the table out of the main file and have attached it here. It contains not only the Clogston but several others using what amounted to ribbed or ringed pipe. @Erin Holohan Haskell , would you agree this should be filed under "Radiators" in the Museum section?
All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
Good catch, Steamhead. I was typing too fast and thinking too slow. Thanks!Retired and loving it.0
-
You got it! Thanks, @Steamhead.Steamhead said:Excellent!
Actually, that's Rolla Carpenter's "Heating & Ventilating Buildings" and he cited John Mills as his source for the table. The book is in the public domain so you can download and save the PDF file.
I pulled the table out of the main file and have attached it here. It contains not only the Clogston but several others using what amounted to ribbed or ringed pipe. @Erin Holohan Haskell , would you agree this should be filed under "Radiators" in the Museum section?President
HeatingHelp.com0 -
My hats off to Dan and Steamhead! Amazing bit of research, all done in the course of a few hours! Good concrete information for a very unusual and obscure piece of steam heat history. WOW!Dave in Quad Cities, America
Weil-McLain 680 with Riello 2-stage burner, December 2012. Firing rate=375MBH Low, 690MBH Hi.
System = Early Dunham 2-pipe Vacuo-Vapor (inlet and outlet both at bottom of radiators) Traps are Dunham #2 rebuilt w. Barnes-Jones Cage Units, Dunham-Bush 1E, Mepco 1E, and Armstrong TS-2. All valves haveTunstall orifices sized at 8 oz.
Current connected load EDR= 1,259 sq ft, Original system EDR = 2,100 sq ft Vaporstat, 13 oz cutout, 4 oz cutin - Temp. control Tekmar 279.
http://grandviewdavenport.com1 -
-
Thank you so much Dan And Steamhead! Awesome work. Now anxiously waiting for my Gorton #2s and the vaporstat to arrive0
-
-
Looks like the radiator covers(screen pedestal) are made by Clogson as well. Also of interest is that there are two Clogson radiators side by side in there, but off of one valve.
0 -
-
Lowell Mass. The marble tops of those radiator covers are even coordinated with the fireplaces in the room.0
-
Sweet details. Thanks.Retired and loving it.0
-
Can't wait to see the pic of that pair of Clogstons with the screen pedestal removed..................All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
Wow!
President
HeatingHelp.com0 -
Unbelievable. Stunning!
Terry T
steam; proportioned minitube; trapless; jet pump return; vac vent. New Yorker CGS30C
0 -
-
I believe they would immerse them in paint. Thanks.Retired and loving it.0
-
Might help:New England SteamWorks
Service, Installation, & Restoration of Steam Heating Systems
newenglandsteamworks.com0 -
The above-mentioned radiator table is now up- thanks, @Erin Holohan Haskell :
https://heatinghelp.com/heating-museum/ribbed-and-ringed-radiator-ratings/All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting2
Categories
- All Categories
- 86.3K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 100 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 64 Pipe Deterioration
- 917 Plumbing
- 6.1K Radiant Heating
- 381 Solar
- 14.9K Strictly Steam
- 3.3K Thermostats and Controls
- 54 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements