On 06/05/2021 13:46, jon wrote:
On Thu, 06 May 2021 13:10:17 +0100, Fredxx 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.

For conventional central heating radiators most heat-loss is through
convection. Air is a poor conductor.

It seems there is less overall air flow for a tall radiator than long
for a radiator with the same area and construction.

So hardly nonsense.


So where does the heat loss go other than in the room..?

The heat loss is imply LESS overall


--
There is something fascinating about science. One gets such wholesale
returns of conjecture out of such a trifling investment of fact.

Mark Twain