How Hot is a 100 Watt Incandescent Lamp?


Spent yesterday in a small under stairs store sorting out a consumer unit; the 100 Watt lamp soon felt very hot close to my head. Done some research and found the following amazing facts: 1˚C = 0.52752793 Wh [Watt hour]. The 100W incandescent lamp produces 2.1% light and 97.9% heat. So the actual heat output was 185.6 ˚C. That’s pretty hot, 2 feet from my head!

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About aimhome
All aspects of energy efficiency and help with saving money spent on utility bills. Home visits undertaken to assess what is used and explain what can be done to save money. Central heating control upgrades, central heating system power flushing. Energy saving lighting surveys and installation of low energy lamps and lighting. Every day that action is not taken is an added cost in hard cash terms. Call today to see what can be done. Green Deal Ecologic Ltd, improving your world without costing the earth.

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