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heat of light bulb

 
 
Reply Sun 10 Feb, 2013 05:52 am
how hot is a 100 watt incandescent bulb
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Type: Question • Score: 1 • Views: 1,472 • Replies: 3
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timur
 
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Reply Sun 10 Feb, 2013 06:17 am
Well, the conversion rate from W to °C is around 0.56.

The luminous efficiency of a 100 W bulb is around 2.6% which means that 97.4% is dissipated heat.

The result is that the temperature at the filament is around 175 °C.

Now you have to report that temperature all over the bulb's surface, which you have to calculate..
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Ragman
 
  2  
Reply Sun 10 Feb, 2013 08:01 am
@rpvanpeltphd,
When the power is off, it's generally room temperature.
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dalehileman
 
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Reply Sun 10 Feb, 2013 10:43 am
@rpvanpeltphd,
Do you mean at its surface Rvf and forgive me but why do you need to know this
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