>
>
> For the tealite I just weighed, the wax was ~13g
>

Yes. 50 g was a very bad guestimate on my part.
So, under 500 Wh in practice for 4 of them.

Now that I again have scales and teaslight to hand I find they are around
12-14 for older ones and ~ 10g for newer ones.

Al outer is < 1 g - and lighter on new versions.

Al would add usefully to the energy output if you could but get it to burn.
Al is one of the most energetic solid fuels available.
Finely enough powdered Al will self ignite in ai=3Dr and burn exceeding fas=
t
- close to explosively so.

The main fuel in the Space Shuttle SRB 'boosters' was / is Al, with
advanced 'tyre rubber' as binder.


                Russell




>
>
> On Sat, Nov 16, 2013 at 8:55 AM, RussellMc <apptechnz@gmail.com> wrote:
>
> > Hydrocarbons provide about 10-15 kWh/kg total bond energy - varies
> somewhat
> > with molecular chain length with short ones benefiting from the slightl=
y
> > higher H to C ratio -  best is (probably) Methane =3D CH4 and candle wa=
x,
> > being solid and rather non volatile at room temperature  will be somewh=
at
> > long chain. How much you get in practice deep-ends on the efficiency of
> > your burning process, but even at 100% efficiency a tea light would
> provide
> > perhaps 500 Watt-hours (based on out-of-head- estimate 50 grams of wax
> > /tealight - I being several thousand km from home with no readily
> available
> > tea's-light or weighing mechanisms to hand.) If you can get by on 2
> > kW.hr/day added heat energy and can get 100% conversion then 4 x
> tealights
> > may suffice. For most it wouldn't.
> >
> >
--=20
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