According to wikipedia a single tealight has an energy output of about 100 btu hr.
Tea light tent heater.
Tea lights are made of paraffin wax and are commonly about 38 mm in diameter and 16 mm high and burn for 3 to 5 hours per wikipedia.
Place the trivit so it is sitting on the edges of the roasting tray above the tea lights not sitting on its legs in the tray as it would normally be used.
However a candle heater is more than enough to warm up some icy fingers.
And make you feel a bit warmer as well.
Heater 4k 9k btu portable radiant tent heater comes with a hose that attaches to propane tanks so you can run this all night long in a 225 square foot space with no problem.
So let s suppose a space heater would take one hour to heat the room up.
I ll get actual temp readouts soon.
Overall it beats occasionally having to start the car to run the heater.
Light your tea lights and place them close together in the middle of the roasting tray.
Use an end table that stands well under the height of your tent.
Also when using tea lights and coffee cans for at home emergency heat a long handled barbecue lighter is much better than short matches to light the tea lights in the bottom of the coffee can.
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The tea lights run for over 3 5hrs and cost as little as 0 99 cents for a 20 count pack.
A small space heater capable of heating a small room is 5000 btu hr.
However this method will have the most success when used in a smaller tent.
If you re going to be burning a candle for light anyways you may as well have a heater core above it to trap the heat too.
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While the flower pot does increase the effectiveness of the candles as heaters a few calculations can show how little heat it actually produces.
Cosori electric kettle bpa free glass boiler hot water tea heater with led indicator light 100 stainless steel inner lid bottom auto shut off boil dry protection 1 7l black.
This also comes with a little kink which is worked in for safety but it depends on how you view it.
My final parting words the flowerpot does not increase the amount of heat just its usefulness.