What's the difference here?

teflon · 10-02-2021 05:49PM #1

Hey folks
I'm looking to replace the radiator in the kitchen. It's not heating the area too well even though its piping hot. Its a 300 x 1400 double rad. I'm looking to put in a 600 x 1400 double with the highest btu I can get.

I've seen this with an advertised btu of over 11000..https://www.bestheating.ie/stelrad-compact-type-22-double-panel-convector-radiator-k2-600mm-x-1400mm-37773

Its dear enough but I cant see the difference between that and this one which is cheaper but the btu is far lower...even though it looks like the same one...https://brooksonline.ie/stelrad-compact-k2-double-radiator-600mm-x-1400mm-un7191

Any thoughts? Am I missing something?

Thanks

T.

K.Flyer · 10-02-2021 08:33PM

There is no difference, both radiators are the same.
If you look at the specifications for the Stelrad radiator on Stelrad's website you will see that they state the btu/hr output for that radiator as 8273 btu at Delta T.50. When you look at the specification info on the best heating site for the radiator at Delta T.50 its the same, but they also quote the higher btu output at Delta T.60.

teflon · 10-02-2021 09:12PM

K.Flyer wrote: »

There is no difference, both radiators are the same.
If you look at the specifications for the Stelrad radiator on Stelrad's website you will see that they state the btu/hr output for that radiator as 8273 btu at Delta T.50. When you look at the specification info on the best heating site for the radiator at Delta T.50 its the same, but they also quote the higher btu output at Delta T.60.

Thanks for that. Is it possible so to achieve the higher btu?

John.G · 10-02-2021 09:52PM

It is, just about, the specified deltaT is the mean radiator temperature minus the required room temp (generally accepted as 20C).
So the normal DeltaT.50 would require flow/return temps of 75/65C, mean of 70C, minus 20C = 50C.
DeltaT.60 would require flow/return temps of 85/75C, mean of 80C, minus 20C = 60C.

What's the difference here?

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