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The above image depicts me constructing the filters using duck tape, 4 MERV 13 filters, a box fan, and the cardboard box from the box fan.
Conclusions
Conclusions
It took a while and a ton of problem solving, but I finally finished my research process. I have collected all my data and finished analyzing and drawing conclusions. But before I can get into my conclusions I need to clarify some of the changes in my research process. Both of which are major.
First, I altered my research question from just comparing the Corsi/Rosenthal Box Air Cleaner to fans the school district bought (the Alen BreatheSmart FLEX), and expanded it to also examine how a fans location within a room impacts its ability to filter the air.
Secondly, off all I narrowed down my independant variables. Instead of looking at PM2.5 and PM10 I only examined the previously mentioned group as it is more likely to be infect someone with COVID-19 when compared to PM10.
After examining how the PM2.5 changed as fans were added into the classroom, based on my data the Corsi/Rosenthal Box Air Cleaner is more effective at decreasing the PM2.5 over a period of 90 minutes when compared to Alen BreatheSmart FLEX Air Purifier. Additionally, when a fan was placed in the center of the room the PM2.5 count of the room was lower then when a fan was placed in any other location.
In conclusion, combining both ideals of each examined data group, location and fans used leads to the conclusion the combination of the Corsi/Rosenthal Box Fain Air Cleaner placed in the center of the room will result in the lowest PM2.5 count when compared to any other combination of location and fan used.
The final step in my AP Research process is to present next week on Tuesday the 12th then finish my research paper and submit to the College Board.
Above is a hand drawn diagram of the class I used to collect all of my data. Location A is the most practical location for a box fan as described by Mr. Koy. This is defined by the location that keeps the fan out of the way of students. Location B is the location that is the most ideal for decreasing PM2.5 count as this location allows the fan to have equal access to all areas of the room. Location C is where the air sensor remained for the entirety of the research process.
The door, windows, and HVAC vents play into my limitations as each are uncontrolled variables of PM2.5 flowing in and out of the room, influence the PM2.5 count that the sensor picks up, thus impacting the data and conclusions I draw from my potentially skewed data.
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