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editHow does "between 70 and 500 watts" equate to "between 8 and 16 gigajoules/year"? Isn't one a ratio of 7:1 and the other 2:!?
How have heating systems whose pilot lights use "half of the total energy" caught on?
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editHmmm. Slight inaccuracy? Or maybe someone dropped figures instead of rounding.
Seconds in a year = 31557600
240W for 31557600s would be 7.57GJ 500W for 31557600s would be 15.8GJ
So rather than '7GJ to 15GJ per year' one would think '8GJ to 16GJ per year' would be more accurate.
Or was there some % of downtime for the pilot light? Perhaps.
Not that this is in sigificant error...Since the error in measurement is likely to be bigger then bunged rounding.
- I computed them using units. The calculation went the other way (from energy to power). The numbers are probably wrong anyway - 500W would have a noticable warming effect on a hot water heater and would probably cause the water to boil over a day (a kettle is only 5times more power). I rounded to nice looking numbers (the precision is probably less than 1 sig fig).
You have: 73 therm
You want: GJ
* 7.7000692
You have: 73 therm/year
You want: W
* 244.00568
crap
how do you turn a pilot light off?
The energy consumption of a gas water heater is about 0.55 GJ per year which is minimal. It is very misleading to say that this many GJ are needef to keep the pilot light lit. —Preceding unsigned comment added by Dorag rags (talk • contribs) 05:06, 3 September 2009 (UTC)
I removed this phrase: "A disadvantage to modern alternatives requiring high voltage is that the appliances become useless during a power outage. Pilot light solutions work independent of the electrical system." Most people can find a lighter or some matches in a power outage. It is a stretch to say the appliance is useless. —Preceding unsigned comment added by 66.245.192.221 (talk) 04:35, 8 February 2010 (UTC)
electric pilot
editI've heard of "power on" lights on devices, machines, etc, being called a pilot light, but don't know if this is common enough to warrant mention in this article. Thoughts, anyone?" --Badger151 (talk) 14:53, 9 February 2010 (UTC)
Magic lantern
edit"During the American colonial period..." Really? you mean a candle? How did they light the "pilot" light? I find this bit of information reaaalllly suspect, especially with no citation. Gimelgort 19:28, 10 February 2013 (UTC) — Preceding unsigned comment added by Gimelgort (talk • contribs)