By a regular incadescent bulb?
2007-04-18 16:41:59 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Ask432 is correct and Rich Z is wrong; as he is mistaking the power required by the air conditioner to remove a certain amount of heat to the power that it take to run it. In other words, you are trying to transport the heat created by the light bulb and not trying to heat up the outside just to cool the inside. Thus if you have a very efficient air conditioner you can use very little energy to transfer heat from one location to another.
2007-04-25 13:05:45 · answer #1 · answered by ? 6 · 0⤊ 0⤋
Since the air conditioner is not 100% efficient we know the answer is more than 100 watts. Figuring 80% efficiency for the air conditioner we get 100/.8 = 125 watts
If the A/C is oversized or if the sun is beating directly on it then the actual efficiency is worse.
2007-04-18 16:45:18 · answer #2 · answered by Rich Z 7 · 0⤊ 0⤋
100 Watt light bulb produce 100 Watt thermal heat. So your air conditioning capacity must be 100 Watt thermal heat equivalence to 422.4 Btuh.
If you use DX air conditioning with COP 1.5, you will use 67 Watt electricity. If you use centralized air conditioning with COP 3, you will use 34 Watt electricity.
2007-04-18 19:34:21 · answer #3 · answered by ask432 1 · 2⤊ 0⤋
Probably at least twice this due to inefficiency and the power to operate the fan motor.
2007-04-18 17:56:14 · answer #4 · answered by scott p 6 · 0⤊ 0⤋