Help--water content

Yooper Rick

Thank you all for your responses. I think we have it closely figured out. I appreciate it.

Yooper Rick

water content

I'm trying to figure the amount of water contained in one sq. ft of radiation. Have a home that wants to anti-freeze their system and it has cast iron column radiators. Using Dan's EDR book, I can figure the sq. ft. of radiation but not the water content. Am I missing something? Let me know as I have a contractor that needs to anti-freeze this system today. TIA

Rick

Jamie Hall

Well...

there is no usable relationship between EDR (which is a measure of effective surface area) and contained volume. Sorry about that...

Mark Custis

You could

drain the system and measure.

Nikolai

System volume

Rick,
You have to know your system pipe , boiler and radiators water content in gallons. When you know total system volume in gallons you have to use 70% water and 30% propylene glycol in the system. I have a table for pipe water volume, please e-mail me I will send this table to you.

Brad White_203

Howver there is some published data

from Burnham, from their "Hydonics Heating Helper" handbook.

Slenderized Radiators 0.066 gallons per EDR

Large Tube Radiators 0.106 gallons per EDR

Column Radiators: 0.188 gallons per EDR

Non Ferrous Convectors: 0.004 gallons per EDR

CI Convectors: 0.040 gallons per EDR

Radiant (SunRad): 0.066 gallons per EDR

Base Ray CI BB: 0.066 gallons per EDR

Unknown

and you will need

And you will need a much larger expanison tank!