Survivalist Forum

Advertise Here

Go Back   Survivalist Forum > Survival & Preparedness Forum > DIY - Do It Yourself
Articles Chat Room Classifieds Donations Gallery Groups Links Store Survival Files



Advertise Here
Reply
 
Thread Tools Display Modes
Old 11-02-2012, 06:58 PM
Determined Determined is offline
Junior Member
 
Join Date: Aug 2012
Posts: 185
Thanks: 154
Thanked 70 Times in 41 Posts
Default Can you make a rocket stove that uses a candle?



Advertise Here

Just learned about rocket stoves yesterday on here. I was wondering if you could make a rocket stove using a candle as fuel. Would it work? I mean would it increase the efficiency of the candle like it does with small sticks (not having to use a roaring fire that loses the energy).

I'm talking small scale, so maybe coffee can or less, coke can. I'd did see a coke can rocket stove, supposedly that's what it was, but the others were just "stoves" that had candles under them. They didn't have the elbow bend, with insulating around it, etc.
Old 11-02-2012, 07:20 PM
zemio zemio is offline
Hunter
 
Join Date: Jul 2012
Location: North Island
Posts: 1,052
Thanks: 719
Thanked 887 Times in 479 Posts
Default

Interesting thought. Never tried it, but I suspect it would eat the candle in fairly short order if it didnt just melt away 1st. This may be a case of 'wrong tool for the job'. Hard to imagine having a candle but not access to a handful of twigs, tho odd things do happen. Try it and see what happens, I'd be interested in the out come.
Old 11-03-2012, 07:24 PM
bctruck bctruck is offline
Junior Member
 
Join Date: Dec 2010
Posts: 131
Thanks: 43
Thanked 306 Times in 69 Posts
Default

the rocket stove works so much more efficiently than a typical standard fire because it burns the gas that is released from the wood (woodgas).candles don't release those gases so it would only burn the way candles normally do.
Old 11-04-2012, 11:39 AM
Gyrene's Avatar
Gyrene Gyrene is offline
Junior Member
 
Join Date: Oct 2012
Posts: 160
Thanks: 456
Thanked 259 Times in 96 Posts
Default

I prefer wax/cardboard heaters/cookers. A couple of tuna can sized heaters put out a lot of heat and you can cook over them. Just my .02 worth.

Made two more yesterday !
Old 11-07-2012, 06:25 AM
DIY DIY is offline
Member
 
Join Date: Nov 2012
Posts: 63
Thanks: 19
Thanked 17 Times in 14 Posts
Default

1. There can't be more Energy Output than there is on Input. A System based on candles or even tea-stove lights won't work or release top heat only for 2 minutes :D
2. The wax of household candles produces parafine vapours, which finally burn. In case, you don't add enough air / oxygen these vapours are poisonous...especially at home, where air circulation is just fair.

A Rocket heater would need some fine tunable preheating of the wax, a burner light, which works independant from the main flame and some tunable heated tubes to control the amount of parafine-vapours. The main problem is: there is only a very small temperature difference between burning and explosion of it all.
...if it would be that easy, there should be already a car or a commercial stove running with that kind of engine.
The Idea with the tuna-cans ain't a good idea either, because once there is too much heat, that warming stove would collapse in a giant fireball....it may work without explosion for a couple of times and when you least expected it..booom..and your tents are gone..
Old 11-07-2012, 06:36 AM
DIY DIY is offline
Member
 
Join Date: Nov 2012
Posts: 63
Thanks: 19
Thanked 17 Times in 14 Posts
Default

Best efficient way to keep warm is still:
- warm, dry clothing and eventually a windshield
- something hot to drink, prepared with a minimum amount of fuel. It keeps you warm from the inside and your clothing isolates.
Everything else gets you noticed by light, smoke, smell and keeps you stuck on one place, if you overdo it (i.e. storing tons of food, fuel, water..)
Old 11-07-2012, 07:32 PM
Determined Determined is offline
Junior Member
 
Join Date: Aug 2012
Posts: 185
Thanks: 154
Thanked 70 Times in 41 Posts
Default

Quote:
Originally Posted by Gyrene View Post
I prefer wax/cardboard heaters/cookers. A couple of tuna can sized heaters put out a lot of heat and you can cook over them. Just my .02 worth.

Made two more yesterday !
Is that the benefit of the buddy burner? You can't get much heat out of one candle, but if you melt them down to one big one with the cardboard you can in a central area (versus a larger area of 50 tealights )?
Old 11-07-2012, 07:34 PM
Determined Determined is offline
Junior Member
 
Join Date: Aug 2012
Posts: 185
Thanks: 154
Thanked 70 Times in 41 Posts
Default

Quote:
Originally Posted by DIY View Post
1. There can't be more Energy Output than there is on Input. A System based on candles or even tea-stove lights won't work or release top heat only for 2 minutes :D
2. The wax of household candles produces parafine vapours, which finally burn. In case, you don't add enough air / oxygen these vapours are poisonous...especially at home, where air circulation is just fair.

A Rocket heater would need some fine tunable preheating of the wax, a burner light, which works independant from the main flame and some tunable heated tubes to control the amount of parafine-vapours. The main problem is: there is only a very small temperature difference between burning and explosion of it all.
...if it would be that easy, there should be already a car or a commercial stove running with that kind of engine.
The Idea with the tuna-cans ain't a good idea either, because once there is too much heat, that warming stove would collapse in a giant fireball....it may work without explosion for a couple of times and when you least expected it..booom..and your tents are gone..
I do not understand the last two paragraphs.
Old 11-10-2012, 06:46 PM
DIY DIY is offline
Member
 
Join Date: Nov 2012
Posts: 63
Thanks: 19
Thanked 17 Times in 14 Posts
Default

As I wrote: there is only a very small temperature difference between burning and explosion of it all. With a big flame, (eventually in a steel box) there is a fair chance
of the wax starting to boil and after that its going to evaporate all at once. Thats a cloud of paraffine (gased wax), lots of air and flames..

Sure, you can burn a few stove lights and construct something with a coke can and a computer-vent, but i won't call it a rocket stove (needs some kind of fuel injection) and you can't use candles, because they'll be melting on one side with the wax just dripping down.
The Following User Says Thank You to DIY For This Useful Post:
Old 11-13-2012, 04:05 PM
pherby pherby is offline
Newbie
 
Join Date: Nov 2012
Posts: 13
Thanks: 9
Thanked 14 Times in 5 Posts
Default

At normal temperatures and pressures, paraffin/wax needs a wick to burn. For rocket stove purposes, you're better off melting the candle and making dryer lint fire starters. The lint acts like "micro wicks", so a greater volume of paraffin vaporizes per second, therefore bigger flame. Couple different designs online based on what is used as the mold/container - TP tube, egg carton. Dry grass clippings in lieu of lint should also work. Good Luck, please observe all standard precautions when playing w/ fire.
Old 11-14-2012, 01:19 PM
DIY DIY is offline
Member
 
Join Date: Nov 2012
Posts: 63
Thanks: 19
Thanked 17 Times in 14 Posts
Default

The main Problem is the impurity of wax, because unlike ethanol its always a mixture of alkanes with longer or shorter chains of carbon (molecule view) which make some candles burn 10 hrs, while others of same size will last only for 2 hrs.
As soon as a bigger flame is used, the weight-energy-value is almost the same as oil, followed by liquid gas or fuel. Its good for emergency cooking.
For some extra heat i use a small handwarmer, which uses a tsp full of purified fuel with platinum as a catalyst and lasts 3-5 hrs.

Outdoors (only on sand-/stone-ground or a fire may burn undergound for weeks!) its easy to make something like the dakota firehole: dig a little deeper, keep it burning a little longer, then fill it up with sand (at least 15") and build your shelter directly above it. The sand-stone-mix keeps the heat, which is slowly released straight to your back.. a nice and lasting radiator during cold nights.
Old 11-14-2012, 09:45 PM
Determined Determined is offline
Junior Member
 
Join Date: Aug 2012
Posts: 185
Thanks: 154
Thanked 70 Times in 41 Posts
Default

Weeks? I do not understand.
Reply

Bookmarks



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Woodgas stove vs Rocket Stove Runeback DIY - Do It Yourself 12 11-07-2014 08:42 PM
Home Canning using a wood stove/ rocket stove Jasmine_xoxo Food and water 5 04-06-2011 10:21 PM
rocket stove hey guy Wilderness Survival, Hiking and Camping Forum 6 02-08-2011 11:14 AM
DIY Stove: Candle cooker Te Hopo DIY - Do It Yourself 7 03-07-2010 05:07 PM
rocket stove vegasrandall Wilderness Survival, Hiking and Camping Forum 3 09-10-2008 10:08 PM


All times are GMT -5. The time now is 06:37 PM.


Powered by vBulletin®
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright Kevin Felts 2006 - 2012,
Green theme by http://www.themesbydesign.net