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Metal Paints and Radiators

HeatingHelpHeatingHelp Posts: 231
edited November 25 in THE MAIN WALL
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Metal Paints and Radiators

Ever wonder why the Dead Men painted so many of those old, free-standing, steam- and hot-water radiators silver? Yeah, so did I. I did some digging and came up with a delicious story for you. It goes like this.

Read the full story here


Comments

  • Jim_RJim_R Posts: 205Member
    Suprisingly there doesn't seem to be much talk about radiator colors and covers when people are trying to get the most heat for their buck .. Maybe there's a line that doesn't want to be crossed with Mrs X coming home and Mr X in the living room with the radiator Mrs X only has seen once uncovered paint brush in hand and a gallon of black paint smiling and telling her how he's going to cut the fuel bill almost in half ! And all those custom made rad covers that have been used for displaying pictures and so on are going to the cellar or garage..
    Has to be a reason it doesn't come up much especially for cutting fuel without losing comfort ?
  • mikespipemikespipe Posts: 3Member
    its interesteing that radiator cover manufactors claim that the covers actually help push the heat out into the room
  • Solid_Fuel_ManSolid_Fuel_Man Posts: 1,196Member
    And now we are trying to leverage the coolest water we can to cover the heat load. All that so our little Munchkin mod/cons spit out as much condensation as we can get.

    It would be interesting to try a radiator freshly blasted, then paint it flat black, then our color of choice. See that the return water does with those 3 schemes with the exact same flow and temp supply.
    Master electrician specialising in boiler and burner controls, multiple fuel systems, radiant system controls, building controls, and universal refrigeration tech.
  • Jim_RJim_R Posts: 205Member
    > @Solid_Fuel_Man said:
    > And now we are trying to leverage the coolest water we can to cover the heat load.

    I'm not sure of what the connection is but if these were installed oversized Re: To be able to open your window and get fresh air on the coldest day of the year..Then years later had them painted silver to reduce their output as people weren't leaving their windows open and we're overheating their homes , why wouldn't doing a 360 on the old de-radiation by Silver paint and let them slowly release their heat instead of just turning to condensate before getting the most out the steam ? I know nobody wants to suggest painting radiators or ditching their fancy covers or who would do it, cost, lead paint and so on.. But maybe 50 % fuel reduction.. I guess there's no money in it so why even talk about it.. But then again someone would have to do under controlled conditions for valid results.. Except a H.O. that lives in the house.. not visit 1 maybe 2 times a year for service.. kinda gives a H.O. a bit of a advantage as they don't have the clock and next job to worry about... And don't read too much into that.. No one will pay for you to stay and monitor their system.. except a few here..
    Still it might just be enough to save a customer . Still wondering why I don't recall seeing anyone suggesting it to a customer.. ? Anyone ?
    Jim
  • mikeg2015mikeg2015 Posts: 444Member
    Jim_R said:

    > @Solid_Fuel_Man said:

    > And now we are trying to leverage the coolest water we can to cover the heat load.



    I'm not sure of what the connection is but if these were installed oversized Re: To be able to open your window and get fresh air on the coldest day of the year..Then years later had them painted silver to reduce their output as people weren't leaving their windows open and we're overheating their homes , why wouldn't doing a 360 on the old de-radiation by Silver paint and let them slowly release their heat instead of just turning to condensate before getting the most out the steam ?
    Jim

    Are you talking about condensate subcooling? If you are, I actually have an interesting set of calculations on that.

    If you could take all of the condensate recovered on a boiler and pull 40F out of it, you could capture another 4% of the energy or about 4000BTU per 100,000BTU input. (82,000btu/hr / 794btu/lb / 60min/hr = 0.2GPM) 0.2GPM * 500 * 40F = 4147BTU

    The net result is that you decrease NET boiler output slightly and marginally increase boiler efficiency by about 0.2%.

  • Solid_Fuel_ManSolid_Fuel_Man Posts: 1,196Member
    I was talking about water systems, I guess the article really is dealing with steam. My mistake.
    Master electrician specialising in boiler and burner controls, multiple fuel systems, radiant system controls, building controls, and universal refrigeration tech.
  • Jim_RJim_R Posts: 205Member
    > @mikeg2015 said:
    >
    > Are you talking about condensate subcooling?
    > @Solid_Fuel_Man said:
    > I was talking about water systems, I guess the article really is dealing with steam. My mistake.

    Ahh .. Using the reference write-up https://heatinghelp.com/blog/metal-paints-and-radiators/ and with many other posts and articles here @ HH and around for a hundred years the evidence is overwhelming that Radiator Covers and Metal paint do decrease, or perhaps better worded "does not allow optimum system efficiency and performance" . And it doesn't appear to be a secret so I was wondering why this seems to be it's not discussed in present tense.. I have to be missing something here.. or is it just that simple ?
    I don't get it.. reducing fuel consumption while maintaining temperature.. unblocking the oven under the window and letting the heat out.. Some people would change habit if they knew about it.. Some perhaps out of necessity..
    Damn hiding in plain sight for decades..
  • JackmartinJackmartin Posts: 124Member
    edited December 4
    Really interesting. You have this in your steam books. I wonder given the fact so many "heating men" insist on running single pipe steam at 5 psig should we paint the boiler too? Na, they would just think the pressure should be higher, you know the boiler room is not as hot as it was. This is of course all in jest. How many of these geniuses never learn single pipe steam is the simplist steam heating system and the hardest to make work correctly. I have told people until I am blue in the face you have to follow the rules! I think we would all be better off if the property managers had to have some technical education not just a lack of education and a snotty attitude. Hey, I have a thought ,since silver paint cuts down on heat transfer maybe if we painted the property managers we would get 30 percent less hot air? 😜
  • Jim_RJim_R Posts: 205Member
    > @Jackmartin said:
    > Really
    Hey, I have a thought ,since silver paint cuts down on heat transfer maybe if we painted the property managers we would get 30 percent less hot air? 😜

    Lol.. I've been doing a lot more reading and they made some showpieces around the turn of the Century.. Articles about remodeling and how to add or remove sections depending on if you expanded one room and reduced another.. the "ease and simplicity" that is...
    Seems colors were chosen to compliment the wallpaper of the room..real focal pieces some designed and placed to simulate a Fireplace and windows, doors, and the North side of the house being the target areas with a " Air Change over " ? Of average 4 times a hour.. not really sure what that means ? But here's a paint color chart from 1904 telling how to apply the paint and the way to set off the fancy designed ones..a bit different than most stuff you see .. Whoop's.. it's called "Something about Decorating" but the bottom part deals more with the paint... 1904-5 .. nothing really weird about it like "Potash" ( just a name not a ingredient)
    Will have to see if I can make time to experiment... Lol
    Jim
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