The document describes the final design and testing of a device to keep ice cold using biodegradable packing peanuts. It includes three layers: an outer wood box, an inner lining, and a small filled space between with loose biodegradable packing peanuts. Testing showed the ice remained 16 degrees Celsius cooler than the starting temperature over 3 hours, demonstrating better insulation than an earlier prototype.

1. The Final Design!
(Whew)
By Richard Soucy

2. The Fabulous Blueprints

3. Rationale
I built the box with loose fill biodegradable biodegradable packing peanuts
instead of gluing them in because when I glued them in, they shrunk due to
the fact they are water soluble.
I filled the box with biodegradable packing peanuts because the biodegradable
packing peanuts have insulation properties.
I used two layers because that way the water from the ice couldn't find a way
into the doggie bag and disintegrate the packing peanuts. (The glue only
makes it shrink because of the low water content.
I used wood glue instead of normal glue because it is a stronger bond and it is
water soluble only under boiling water.
I used a lining on the packing peanuts because I a drop or so of water came out
then it would start a small chain reaction that would biodegrade all the
packing peanuts.
I used a small area for the packing peanuts so there would be no air for
convection.

4. Final Results
Temp Of Ice Over Multiple hours
15
Temperature in Degrees Celsius
10 10 15
12
5
0-1 0
0 0
-5
Start 0.5 hour 1 hour 1.5 hour 2 hour 2.5 hour 3 hr
Difference: 16°C

5. Prototype Results
Temp Of Ice Over Multiple hours
8
Temperature in Degrees Celsius
6 6.5
4
4
5
2
0 0 0 0 0 0 0 0 0
t
0
ar
r
0 0
ou
r
St
ou
r
1h
3h
r
2h
4h
r
5h
r
6h
Difference: 1°C

6. Comparing Results
Prototype
Final Design
16 7
15 6.5
14
6
12 12
5
10 10 5
Temperature in Degrees Celsius
Temperature in Degrees Celsius
8 44
6 3
4
2
2
0 1
0 0 0
-1
-2 0 0 0 0 0 0 0 0
Start 0 0 0 0
1 hour 2 hour
t
ar
r
ou
3 hr
St
r
4h
r
2h
6h