How powerful is a candle? Is the total power light plus heat of a candle more or less than for a typical domestic LED lightbulb? Equipment required A new candle or tealight A match or other lighter Kitchen scales A clock or timer Paper and pencil for results and calculation. Candle power worksheet Candle power report. Risks Adult supervision as there is fire involved. Watch the video. Write it down.
Start the timer or note the time as you light the candle. After 2 hours of burning, blow out the candle. Include any wax that has spilled as we only want to count wax that has burnt. Chemical energy transferred in joules to both heat and light.
Thoughts, tips and information. Do all candles burn at the same rate? You can repeat this experiment with different candle types. Total candle power can be more than typical LED lightbulbs, though candles transfer most of their energy as heat, not light.
Personal pref is germanium diode rectifiers and capacitor diode bridge stolen from a really cheap shake light WITH the capacitor.
Would you please try to acquire some very basic knowledge about electronics before write such bullshit? The voltage from a Peltier element used in this way is apparently to low to light up an LED, while the power supplied is sufficient.
The following link was found at the bottom of the joule thief wikipedia page. Thanks , for that it was useful to me too …. Lighting an LED is just the obvious example to show that power is being generated. Would it suffice for you if instead of an LED, this setup was powering an Arduino?
I have experimented with similar contraptions and circuitry to charge small batteries. They can then be used to power an mp3 player, a cell phone or a QRP transmitter. You have to be careful when heating a peltier junction with a candle or other open flame.
It is comparatively easy to damage the junctions, or even cause them to come apart with excessive heat. Only issue is that every supplier I can find after not searching for very long sells toy size versions as opposed to useful size versions. Where did the guy who powered a 12kW generator from Sterlings and sunlight get his yes that was featured on hackaday?
This is so cool. I would be interested in hearing more about this…please post more cool stuff like this. Now I just hope some net-retailer like Solarbotics starts selling them also in small batches.
It was powered by a kerosene lantern…. If you feed the amplified voltage into a fan that would cool the ambient side of the peltier unit more effectively, then you would really … um…. Wish we still had those. It was pretty simple to make too. And that was printed…back in the 60s at the latest. Here is a radio powered by thermocouples same idea for use in remote villages in Pakistan.
The heat comes from a candle. The article includes construction details. Well you get the light of the candle plus the light of the LED which looks quite bright … hard to tell from the picture. So it adds a benefit, besides being a fun project. Community Bot 1. Sai Sai 3 3 bronze badges. The heat conduction by the fabric of the wick is much too small! The wax is molten by radiated heat IR! You are right -- its radiated heat. I learned something from you, bow in your general direction, and stand corrected.
Anyway I learned something and got a chance to use a Monty Python reference. Raina Raina 1 1 1 bronze badge. Featured on Meta. Now live: A fully responsive profile. Related 1. Hot Network Questions.
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