what the goal is
The goal of this project is to combine different material to make a good insulator.
Constraints
* Insulation had to reduce heat loss
* have a total thickness of a maximum of 1"
* it had to have a consistent composition
* all matierials have to be echo friendly or recycable
* have a total thickness of a maximum of 1"
* it had to have a consistent composition
* all matierials have to be echo friendly or recycable
brainstorming
The only thing that my group and I had to do was figure out who was bringing what material. If we didn't do this, someone in the group could have brought something that didn't insulate at all, or more than one person could have brought the same material as someone else. In the end i forgot to bring something. my group members brought cardstock material vocered in thick cloth and someone else brought something that we think is called rucksack, and cardboard. Although we didn't bring very much material, I think it still worked well.
calculations
Known Values
Unknown Values Equations Used Substitution |
C of air (C) 1,000j/kg*degrees Celcius
change in temperature (T) 10.2 degrees Celcius change in time (t) 1,200 seconds power (P) 25w area of air (A) 0.04m^2 length of insulation (L) 0.01m mass of air (m) conductivity (k) rate of transfer (Q) P=Q/t k=PL/AT Q=mCT 25=Q/1,200 Q=30,000j k=(25*0.01)/(0.04*10.2) k=0.025/0.408 k=0.0613 30,000=m*1,000*10.2 30,000=10200m m=2.941kg |
final design
reflection
I have learned lots of things during the thermodynamics activity. For example, if someone took off their glasses while near a campfire, their eyes would get warmer because the glasses had been acting as an insulator. And if someone wanted to cool themselves down, icewater is preferable to hot cocoa due to the fact that heat travels to cold. Some things that I believe would have made my group's insulation include more non-conductive materials and putting holes in the insulator, as air is a terrible conductor for heat.