Imagine a house in a closed system. This house cannot lose heat or gain heat outside of itself. Now we have a heater that produces heat for the house. We also have a 60 watt light bulb that only supplies about 3 watts to actual light. 57 watts of it would be turned into heat and relatively a small amount of noise. Since this is a closed system, isn't all the heat transfer from the light bulb and the heater the same. All the light turns into heat and all the noise vibrates the walls and turns into heat. Is it true that everything is 100% efficient for heating as long as you are in this closed system. If this is true then inefficient light bulbs are the exact same as efficient ones and the exact same as the heater. Considering conservation of energy even the electromagnetic waves that exit the lightbulb and all sound waves will turn into heat when they strike the wall.(adsbygoogle = window.adsbygoogle || []).push({});

Following that rational, if the house was not a closed system and the heater or lightbulb was at the center of the house. They would both have the same efficiency. As long as all the light from the bulbs does not exit a window. The heat will eventually get to the outside wall but before it gets there the light and noise has already been converted to heat in the center of the house.

thanks in advance

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# House Heatings question

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