On 06/05/2021 14:13, Clive Arthur wrote:
On 06/05/2021 12:55, jon wrote:

What is this nonsense, heat is dissipated by radiation, convection or
conduction so how come efficiency becomes a problem.

It is true (though 'effective' would be a better word) because of the
reasons given by T i m and others.Â* Look at the manufacturer's figures
for power output and you'll see.

As a result, a vertical rad will be heavier and (usually much) more
expensive.Â* The upsides are that they take up less width, and when you
come in from the cold you can stand against one.


But cannot sit on them :-(