We have a long low radiator below a window in our sitting room. It’s manky
and ugly and I’d like to replace it with something a bit less gross.
It’s a twin panel steel affair without any fins. I’d like one with a higher
output but similar dimensions to go with our condensing boiler (so fins
needed). The trouble is, I’ve tried searching Stelrad and a few other
sites but can’t seem to find anything over 2 metres long. I can’t fit
anything taller than 450 due to the window sill.
Any suggestions for suppliers?
Fit 2 shorter ones fed in parallel mounted side by side.
Tee off the feed and feed both ends via TRV's.
Join the two in the middle and tee off for the return. Use nice chrome
pipe and make a feature of it.
I can see a 400x2200 off the shelf
I had a custom towel rad from this lot, they make "column" radiators
with any number of sections
You can get about 150W/sq m out of a stud wall with enough pipe behind it.
A typical small room only need 50-100W if its DG and well insulated
In shot get it as hot as a rad of te same area and it will produce te
Religion is regarded by the common people as true, by the wise as
foolish, and by the rulers as useful.
2.6m x 450mm
2.5m x 300mm
a 2-5m x 450mm is listed
I have seen two radiators affixed together into one using two vey short lengths of copper tube, one for the top and one for the bottom.
This effectively turned the two rads into one single big radiator and then the existing feed and return pipework attached as usual.
IME Quinn have slightly higher outputs than others for the same size
(better fins I guess).
Here you go: 400x2200 in a variety of panel arrangements giving:
1.4kW to 2.8kW at delta-T of 50C
Now, only you know how much power you need, but:
1) deltaT-50C means average rad temp minus room temp. So if you are
looking for fast heat up from 10C, that's an average water temp of 60C
which means about 65C in and 55C return - right on the limit for
I tend to work on deltaT-40C for the worst case warm up (water at 55/45
flow-return) and delta-T-30C to maintain the room once it's nice.
I stuck in the biggest radiators I could, (without going to triple panel
monsters) everywhere and have not regretted it as the room heat up is
fast and I can run the water temperature quite low which is more
efficient and more comfortable.
Water volume makes no difference to power output vs delta-T.
It might aid with overall system response, if you reduce overall water
volume a lot as a result, but the power output is valid when the system
is in steady state (radiator, not room which is obviously heating).
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