Large designer rads on 10mm

[Scott_D]

I have a customer that wants large designer rads 6000btu ish but they want the pipes chased in and it’s single skin internal block walls.
I would aim for a 40-50mm chase for 15mm pipe buts that’s half the wall gone.
Has anyone piped up designer rads with 10mm copper chaser in and 15mm stubs out the wall?

 

[ShaunCorbs]

10mm just in the wall or is it on a spider ?

 

[Scott_D]

Just in the wall
The existing rads are on a 15mm drop.
My main concern is some disigner rads don’t heat fully at the best if times if there is no baffle.

 

[ShaunCorbs]

I would say your fine as your around 2m of 10mm

 

[SJB060685]

By my calculations 10mm will carry the energy just fine. At a DT of 20°c and the target flow rate and velocity of 0.9m/s it will carry roughly 4.5KW.

My concern is though at that flow rate you will have a velocity around 0.3m/s which is below the minimal design velocity of 0.5m/s, this could cause impurities to settle and cause gases to be reluctant to be extracted.

 

[king of pipes]

I'm doing some shortly with 15 mm chrome coming out the wall, with corner valves at present there are normal panel rads with pipes coming out of the floor, 6000 btu is a high output stick to 15 mm is my shout use a wall chaser to keep thing neat and tidy . Kop