To melt, or not to melt
can our melt-proof container work?
As an engineer, it's our jobs to make newer and better things. However, the one thing that all of us struggle with is making melt-proof containers. How do you keep heat out and cool air in? My team has tried our hand at the task, and took inspiration from on of the most normal things in the world--a house.
In the summer, a house keeps cool air in and hot air out. This is done with insulation, or the fluffy stuff between the walls. We thought if was put something like the insulation of the house in our design it would hold the cold air in as it does in the house. So, we put a layer of aluminum foil around the frozen block of ice--which was in the bottom half of a halved water bottle--, then we had a layer of cotton balls, and another thing of aluminum foil. We hoped the cotton balls would acted like insulation.
After doing four readings, our temperature went from ten degrees Celsius (or ten degrees above freezing point) down to three degrees Celsius, which it stayed at for the other two readings. It was to late to change anything, but I realized that our design was flawed. The ice was already melting, but it had stayed at a consent rate, so I thought we were on a right track. Possibly with a better lid than plastic wrap, it would have stayed frozen for longer. Better materials or more layers also may have changed the result of the experiment. However, we did keep it at the consent rate, so our work was on the right track.
Not only were we suppose to make a melt-proof container, but we wanted to keep it as low as possible. Using the simple materials we did, it came out to an even $4:40 dollars. We believe that even using more expensive materials, we could keep it as low as possible.
As the overachievers we are, we tried to be under the max of the materials, cost, and design limits. This is what happened:
Our limit was 20 cm, but our design was only 15 centimeters.
Our total cost ended up being 4.40 dollars, since we wanted to keep it as low as we could.
Our team worked very well with one another, we tried to build on other people's ideas instead of knocking them down.
I think we did work, however we could had spent more time on the project instead of trying to rush it. Our videos were a tad sloppy, but overall we tried our hardest and applied everything we knew.
The most challenging thing we dealt with was making our final product. With so many ideas flying through our heads it was very hard to set one idea in stone.
Our total cost was $4:40.
We spent fifty cents in aluminum foil, fifty cents in cotton balls, twenty cents in plastic wrap, and three dollars and twenty cents in tape. This made our final product 4:40 dollars and, what we think, very cost effective.
Our Temperature Readings:
First Hour: 10 degrees Celsius (Or ten degrees above freezing)
Second Hour: 3 degrees Celsius (Or three degrees above freezing)
Third Hour: 3 degrees Celsius
Fourth Hour: 3 degrees Celsius.