use a Ghillie ...as depicted in the photo s below.
In some places an open fire is not allowed
or inappropriate eg just to boil water for coffee
...
A ghillie just requires a few twigs and the
one depicted holds about 6-8cups of water and can be boiled in less than 5 mins.
A firestarter (eg teabag soaked in parafine)
and a handful of twigs are place in the
basal hearth and set alight. The Ghillie jugs
jacket is filled with water and positioned
on the hearth to boil.
https://ibb.co/gSPYMpc Ghillie in action
The flames may vigorously rise right up
the central chimney and there is a big
heating interface against the jug
https://ibb.co/x1kC344 Perspective View
https://ibb.co/kc89PfS Base hearth for fire
There is a breathing /twig feeding window
that is about same diam as top of chimney
https://ibb.co/LzhLghV Top down View
looks down the chimney ... the spout
for the jugs water holding jacket
is on the top side and has a little cap/top
https://ibb.co/GHGPf5t Bottom Up View
The bottom of the chimney funnels out
to offer a heating ceiling to the fire
in the hearth and the flame/heat
is funnelled up the chimney exhaust
https://ibb.co/0XTP0FP Schematic diagram
This simplified schematic showing approx dimensions ... the chimney is funneled out at the base of jug so it offers an inclined ceiling to firepit ... the jug fits neatly into the base firepit and neatly sits on a ledge.
Factory made Ghillie chimneys have a ‘trending choke’ ... but I think one could just use a 6cm diam pipe for most of the chimney height
... and then just funnel out the base of the jacket ?note intake window is approx same diam as chimney top exit ...
......
Ive seen a guy put the jug on a gas ring ... (ie without using the firepit hearth base) and he could so control the heat delivery etc ...
akin to putting gas burners under a 45gallon donkey boiler ... !!
...
Kelly, Kettle, Storm Kettle, Ghillie Kettle, Thermetteand Volcano Kettle are trade names for efficient portable devices for boiling water outdoors using twigs and other small combustible materials; these devices consist of a water jacket surrounding a fire chamber which creates an upward chimney draft ensuring efficient and rapid boiling even in windy or wet weather.
Kelly Kettle and Volcano Kettle are registered trademarks of the Kelly Kettle company[1][2][3] which first produced the product in Ireland in the early 1900s. George Marris & Co of Birmingham first produced the "Sirram Volcano Kettle" in England in the 1920s. The Thermette was first manufactured in New Zealand in 1929 and was standard issue for the New Zealand Army during World War II where it was known as a Benghazi boiler. Other companies, including the Eydon Kettle Company started manufacture at later dates.
Actually the Kelly is a copy of the famous Ghillie kettle
And the ghillie is also for sale here...
http://www.ghillie-gear.co.za/za/index. ... uct_id=112
Some Landymen make tall water heaters for showering ... just a 2cm pipe about 1m high inside a 6 cm pipe ... but conceptually the same ... but only a single gas or parafine flame ... even a candle ... at base !
