On Sat, 8 Aug 2020 08:28:03 +0100, michael adams wrote:

wrote in message
...
On Friday, 7 August 2020 18:01:59 UTC+1, polygonum_on_google wrote:

"In terms of energy use, research generally indicates that induction hobs are cheaper
to run, with induction hobs proving to be 74% efficient in converting energy to heat,
using 57% less energy than gas hobs."

Makes no sense, electrickery is 4x the cost of gas per unit.

I've just had a brainwave.

Presumably with gas the problem is that a lot of the energy is wasted in heating
the air gap beween the gas jets and the bottom of the pan. More especially
as the jests are arranged in a circle around the outside and and so theres
plenty of scope for heating the surrounding air.

Supposing instead there was one central gas jet directed upwards at the
centre of the pan. This would need to be governed by a circular ring on which
the pan would sit, to prevent the gas jet setting fire to the celing.
The thickness profiles of the bottoms of pans to be used in this way
would probably need to be adusted. Possibly thicker in the middle

michael adams

Saw a kettle for camping that had a 'skirt' with some gaps, so that the
stove could be set to a smallish flame and the hot gasses were held
underneath to some extent. I don't know how well it worked.


--
Peter.
The gods will stay away
whilst religions hold sway