Show your final product through photos and/or video
Explain how it works/doesn’t work using scientific terminology
The motor, powered by the battery, converts electrical energy into kinetic energy, making the tin fan move. The movement of the tin fan then pushes air forward towards the end of the bottle where the holes are (aka exhaust port). When the air particles are driven forward, the air pressure (density) of the air particles increases in front of the fan (ambient air pressure) and decreases in the back of the fan. The pressure drop behind the fan drops below the pressure level outside the vacuum cleaner. The ambient air then pushes itself through the front opening of the vacuum cleaner because the air pressure inside the vacuum cleaner is lower than the pressure on the outside. Therefore, when the air, or the friction, push inside, it sweeps up the dirt and debris at the same time. The reason that my project does not work that well is that there is not enough air stream being created by the fan despite changing the material into a more sturdy kind.
Explain the areas you were successful in the product/process
During the engineering process, I successfully found a creative project and modified it into my design. During the building process, I successfully conquered all the problems that occurred and found others ways to cope and adapt to the situation. For example, when the Aquaphor bottle cap extended the space needed for the fan, I adapted by cutting more tin from the coke cans to cover up the holes. Although my product does not entirely work, I believe that the concept is still there, and it can still successfully serve as an example of energy transfer and air pressure to physics students.
Explain the areas you need to improve in the product/process
If I could redo this project, some things that I could improve on is making a more thorough building plan. This is because if I left more material on the bottle instead of cutting it away, there would’ve been enough space for the fan after modifying the design. If I had more time, I would improve on the power of the fan, finding more ways to create a sturdy air flow for vacuuming. I would also shorten the tub more so that it would be easier for the debris to be swept inside.
Explain the impact of this project on the environment and potential client/consumer.
This project is environmentally friendly because it is made out of recyclable material such as plastic, cardboard, etc. Not only are we recycling materials to build this vacuum, but the vacuum itself can also clean up messes and debris, which helps the environment become a cleaner place.
As for its potential consumer, I think it is a very handy device that can be used every day, whether it’s a student using it to clean their desk, or just someone cleaning up tiny messes on the floor or table. It is a lot more convenient to use than bringing out the big vacuum cleaner.
Although this project does not entirely work, it can still be used in class as demonstrations for energy transfer and conservation of energy (electrical energy transfers into kinetic, with sound and heat wasted). It could also be easily used to model in a Sankey Diagram. Besides teaching students energy transfer, it also serves as a unique example of air pressure. Students learn that because there is less pressure inside the bottle (fewer molecules, collisions, and force), and more pressure outside the bottle, the total force is directed inwards, pushing the debris inside the bottle.