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.


As I think I said the last time this came up, my physics is nowhere near
good enough to decide "by inspection" whether a vertical or horizontal
radiator is better at transferring heat to a room. And (like some
others) I saw too many /known/ unknowns - e.g laminar flow? temperature
of air exiting top? chimney effect? - quite apart from the possible
unknown^2

Ah yes:

https://groups.google.com/g/uk.d-i-y...m/lwVTe0U-U3YJ


--
Robin
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