Radiator cover restriction of heat.

[sym]

How much extra output should I allow if radiator covers are fitted?

 

[tamz]

How long is a piece of string.

 

[Masood]

How much extra output should I allow if radiator covers are fitted?

What's the cover made of? How solid/perforated is it?

Very hard to calculate something like that without a good deal of info. Maybe the cover manufacturer would have some information?

 

[oz-plumber]

Depending on what type of cover you are going to use but generally between 7 to 15 %.
Very broad spectrum - and very hard to get accurate figures.

If you are going to have the radiator covered, make sure you cover your "&% with the heat output.
It will be you that will have to answer the questions if it doesn't heat the area

 

[Best]

You could also advise the owner to have extra or larger cuts outs in the radiator cover. Depending on the type, but some don't have enough cut out of base & the upper part, both of which are the most important to allow good convection.
If people want to cover a radiator they can expect to reduce the output.

 

[Centralheatking]

Hi sym

Your question is a good one - loads of householders fit rad covers I have
one in my new extension. Bluntly there is no specification because the covers
are knocked up DIY/IKEA etc and they really wreck any normal heating calculations.

However there are some steel rad covers - NOW THESE really work - they conduct heat
rather than insulate the heat from the rad.and can actually make the rad perform better

- BUT UNTESTED BY MY DESIGN COMPANY centralheatking

i UOTE=sym;566872]How much extra output should I allow if radiator covers are fitted?[/QUOTE]

 

[Roger Welton]

I'm sure I've read somewhere domestic heating design guide maybe? That they can knock up to 40% off the output

 

[Chalked]

They also need a remote sensing trv.

 

[AWheating]

i couple of 12v computer fans at the bottom moving air through the cover will help.

or one of those fancy myson rads with fans inside.