Heat Waste Of Lightbulbs Lab Report

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Heat Waste of Common Lightbulbs

The purpose of my experiment was to see how much energy was wasted in different types and wattages of lightbulbs through the output of heat. The initial objective of the project was to research the variety of lightbulbs available on the market today including their wattage and other important features pertaining to their operation before starting the experiment. The reports provided information that first helped me to formulate a plan to calculate heat energy, measured in calories. I was then able to subsequently convert the heat energy into joules which is a more commonly used unit of energy. This was accomplished by multiplying the amount of calories produced through …show more content…

It would make sense that the bulbs that waste the most energy through heat would be the ones that need that heat to work properly. CFL bulbs work a little differently. They have an electric current that runs through them and because they are filled with gases like argon and mercury vapor, they produce ultraviolet light. The human eye cannot see ultraviolet light so CFL bulbs have a thin coating on the inside of the bulb that shines with visible light once the ultraviolet light hits it. Household LED lights work very differently from all the other bulbs. A certain amount of voltage is applied to the leads, a piece of the LED that conducts electricity, which in turn allows electrons in the LED to combine with electron holes, giving off photons that produce light. They are usually made up of a group of small LED lights to create a larger cast of light. This is because one LED light by itself has very concentrated light. In order to light up a room, it would be more practical to have a several LED lights so that the illumination is not so concentrated. One thing to note about LED lights is that they do not need to be heated up …show more content…

The data also shows that CFL bulbs were a very close second in the amount of wasted heat energy per watt.. This was expected because the CFL bulbs, like the LEDs, do not need to heat up something to cast light. The results of this experiment can be used in many different practical situations. For instance, when setting up a light source near something that could easily catch on fire, it would not be a good idea to use one of the bulbs that give off a lot of heat energy. Also, if you want to use the most efficient bulb, you should consider the one that turns most of the energy it uses into light energy like the LED

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