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Heating a room for 8 pence a day, brilliant idea!
Comments
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What's the relevance of the pots, tin, etc.?
They're not going to generate more heat than the candles...0 -
What a clever idea! thanks for sharing.The secret to success is making very small, yet constant changes.:)0
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and it even includes the good old 'four candles' joke. :j
If it works, and it states it does, its a brill idea:TThe first time we said hello, was the first time we said goodbye. As the angels took your tiny hand and flew you to the sky-you forever left us breathless. RIP my beautiful granddaughter
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'andles for forks?
Other than changing the heat distribution the clay flower pots can't add anything to the output. Maybe encourage more convection, perhaps a bit of radiated heat, but the overall output is just the same.0 -
Love it. But I'm suspecting he's single?
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Anyone know what the kWh rating of a tea light is?0
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A bigger room for 16 pence ?
Sooner or later we will go back to the old ways, or we will be fleeced.Be happy...;)0 -
Anyone know what the kWh rating of a tea light is?
About 100W I think. Trying to find something online to back up my memory though!
- Inconclusive search. I have found link suggesting anything from 15 - 100W per candle. Admittedly 100W seems on the high side, so I'd likely restate my answer to "about 20-30 depending on the type of candle".
Just to point out though - a candle will release it's heat into the room whether or not you build a contraption over the top of it. The SAME HEAT is given off. You cannot MAKE heat from flower pots, so you'd have to conclude this is a waste of time!
Just light a candle and enjoy the warming flicker of the flame.0 -
About 100W I think. Trying to find something online to back up my memory though!
- Inconclusive search. I have found link suggesting anything from 15 - 100W per candle. Admittedly 100W seems on the high side, so I'd likely restate my answer to "about 20-30 depending on the type of candle".
All waxes and oils produce about 12kWh or so of heat per kilo.
For the case of a tealight weighing perhaps 4g, that's 50Wh or so - over 3h, perhaps 15W.0 -
http://www.quora.com/Energy/How-much-energy-heat-does-one-standard-tea-light-candle-produce#Tea candles are a wax cylinder about 1.5 inches in diameter and * 0.5 inches tall. Volume of a cylinder is pi * r**2 * h = 0.883 cubic inches or 14.45 cm**3. The density of paraffin wax is 0.9 g/cm**3, so we're looking at 13.03 grams of wax. The energy content of paraffin is about 42 kJ/g, so we're looking at 547kJ. There are 0.277 watt-hours per kJ, so we've got about 152 watt hours.
152Wh x 8 = 1.216kWh.
Electric
1kWh ~ 15p
0.15p/1000Wh = 0.015p/Wh
Tea Light
1.216kWh = 8p
0.08p/1216Wh = 0.00657p/Wh
Gas
1kWh ~ 4p
0.04p/1000Wh = 0.004p/Wh
Does that seem right?
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