2007-06-19 05:51:29 · 5 answers · asked by richard a 1 in Science & Mathematics ➔ Engineering
Approximately 95% of the power consumed by an incandescent light bulb is emitted as heat, rather than as visible light. (see links below for documentation)
For a 60 watt incandescent bulb, the heat output can be computed as 60 watts x .95 = 57 watts.
Your air conditioning equipment must offset this extra 57 watts. However, in winter the extra 57 watts assists your furnace in heating the home.
Some building actually count on the incandescent lights to assist with the heating requirements. If these buildings were blindly converted to CFL's, the heating systems could not keep up during the coldest days.
2007-06-19 09:13:17 · answer #1 · answered by Thomas C 6 · 1⤊ 0⤋
Looking at these answers - and they sound about right
normal light bulb heat output for 60w bulb is about 57w. Energy saving light builb its about 25% of that.... or 14w
2007-06-19 18:11:06 · answer #2 · answered by whycantigetagoodnickname 7 · 0⤊ 0⤋
an incandescent bulb of 60W is equivalent to about a 11W energy efficient bulb.
so is that 25% of the 90% of 11W = 2.5W
or just 90 % = 9.9 W
????
2007-06-19 20:01:15 · answer #3 · answered by wilco 1 · 0⤊ 0⤋
About 25% that of an incandescent of similar light output. ~
2007-06-19 13:38:02 · answer #4 · answered by Anonymous · 0⤊ 0⤋
About 90% of the energy used by an incandescent lightbulb is wasted as heat...They should be called heatbulbs, instead of lightbulbs.
2007-06-19 13:17:10 · answer #5 · answered by Ellie S 4 · 0⤊ 0⤋