Fuel (specifically wax) usage data requested.

Some figures here :

http://zenstoves.net/G-Micro.htm

Jon Fong reports 20 grams to boil 4 cups water on this thread:

https://backpackinglight.com/forums/topic/another-wax-stove/

That works out to better than 70% efficiency.

I did some testing a while ago boiling 2 cups of 70 F water using 3 tealights.  Time to boil was 45 minutes and consumed 7 grams of wax.  In another experiment, 3 tealights burned for about 4 hours.  In my experience, I get about 25 watts per tealight.  I hope that this helps.

Hmmmm! Would this be any hotter than ESBIT fuel tabs? Would it leave less residue on the pot?

Without the stand legs and diffuser ring it is still too tall to fit into a TD Caldera Cone to concentrate the heat and have a built-in windbreak. Maybe a Tri Ti cone is tall enough, especially if the two ti shepherd’s crook stakes are used to elevate the pot.

Thanks so much for this post. Very interesting.

From the zenstoves link:
<p class=”Zen”></p>
WAX MODE
Fuel Pure Paraffin Wax (Wax Stix, Candle Pieces , Etc)
Burn time full reservoir 30min
Paraffin wax consumption 26g/hr 0.91oz/hr
1,100 btu/hr (wax mode)
Boil cold water (Max 16oz [2 cups, 462mL]) at less than 1 min per oz.

David, what have you gotten so far as boil times and fuel usage for 2 cups?

so, 16 min to boil 2 cups, 26 g/hr – 7 g to boil 2 cups water

that’s about the same as butane – 1/4 oz (7 g)  to boil 2 cups water

the heat density of butane and wax are about the same so that makes theoretical sense

my only problem is it takes 5 minutes with butane, vs 16 minutes with wax, and the residue on the bottom of my pot.  And that residue is waxy so it comes off and gets on everything.  But that’s not the subject of this thread, sorry : )

Well, 7 minutes to boil 2 cups on my wax system. YMMV.