Tuesday, February 12, 2008

Activity 5.2 Question

What materials serve as the best insulators in cold water bath?

19 comments:

Colin Phelan said...

In Activity 5.2 we had to create an insulator for the can challenge. I found that using Styrofoam with bubble wrap paper on the inside was the best insulator. I know this because Tommy and I used those materials and got the least amount of temperature change within 20 minutes.

Eloïse said...

My insulator did not work very well and bubble wrap. But I found that Styrofoam worked well with other groups who's water temperature dropped very little.

Austin Gais 0_o said...

while our insulator didn't actually do to well, when we added Aluminum Foil the insulator was dramatically better.`

matt tao said...

In Frank and my can, we used bubble wrap and duct tape to cover up holes going through the bottom. I did not work well, but we found other groups using wood boards with foam peanuts inside the wood box which was a highly effective insulator. The point of insulators is also to use less energy, but to keep most of the heat without using more energy.

Christopher Noda said...

When designing an insulating container one must take into account the ability of each material to keep the object waterproof and the ability to keep the water inside warm. Me and Nick's can was very bad because we used non-waterproof duct tape with water absorbent wool socks. We have figured out that any material that is waterproof will do a very good job in keeping out water while an insulating object keeps the inside warm. For example one might have some Styrofoam, a very good insulator, surrounded by air, another good insulator, then the outside be waterproof. Therefore when taking into account a good insulator. Choose something waterproof.

Meagan M. said...

The insulator I made with Arianna worked very well, only changing 9.8 degrees Celsius in 20 minutes. We used cardboard, tape, a plastic bag, and foam peanuts. The plastic bag insured it would waterproof, and the peanuts were successful because styrofoam is a good insulator, as we dscovered in Activity 5.1.

Hadley Edwards said...

My insulator that I made with Parker was a disaster. It dropped about 37 degrees celcius in 20 minutes. We used duct tape that was not water proof, styrofoam, and baby diapers. I really think the baby diapers brought us down because the soaked up all of the water coming through the holes and the inside of the diaper turned into gel. We could have used a better material and more sustainable material such as bubble wrap and fiber glass which worked for many people.

Christine Jackson said...

When we designed an insulator, my partner and I used foam board and duct tape. It didn't work very well and I think that Styrofoam would have worked better. The water in the can went down 21 degrees Fahrenheit. Our insulator was also unrecyclable, and thus unsustainable. The insulator also leaked, and made the temperature of the water decrease faster. If we could do the project again, we should've used a thicker, waterproof, and more sustainable material, like cloth and plastic.

Jametria Wright said...

Well, the insulator I made with Elanore work extremely well in my opinion. We used duct-tape and styrofoam throughout the whole isulator, and it only dropped about 9 degrees celsius. We put styrofoam in the middle of the isulator and layered the outside with a ton of duck-tape. We made sure that no water could enter it through out the 20 minutes that we tested it. Although our insulator gained 20g, when we dumped it a drop of water came out. Again, I think our insulator worked really well. If I were to do this experiment again I would use different materials, like more thicker and compact materials. It would be interesting to see how they would work out.

Frank Sprich said...

Matt and I used bubble wrap and duct tape for our insulator. We used the duct tape to hold the bubble wrap on the can and to cover any holes so water wouldnt get in. After the experiment we realized that these materials were not a very good choice because water had gotten inbetween the bubble wrap and insulator and may have lowered the temperatue in our can quicker

DeAnna said...

Shelby and I had a foam base, covering the insulator. The insulator was covered in duct tape and underneath it was Styrofoam- thats we think helped the insulator the most. It worked very well at a change in temperature of 9°C. The best insulator in a cold water bath is probably Styrofoam, granted you something to prevent energy transfer that is also waterproof.

anellore said...

The materials that our group(Me and Sam Streett) found to be very good in the experiment were waterproof materials such as duct tape. Also, bubble wrap was a very good insulator, and styrofoam was also good. The main thing is choosing something waterproof. If you don't, the cold water will leak through and cool down the hot water.

mmann said...

In activity 5.1 I found out styrofoam is a good insulator. But, when we used it as our insulator in activity 5.2 with our soda can we found out it was not that good because we (me and lucy) lost 36 degrees. If we used more duct tape to clog holes in the styrofoam or materials that are more waterproof we would have been better off.

Suzie said...

Meredith and I created our insulator out of plumbing insulation, wrapped with duct tape. We had a top made of plumbing insulation, and the bottom "plug" was made of styrofoam covered in duct tape. We did the experiment for 5.2, placing 80 degree Celsius water into our can, placed the can inside the insulator, and put our insulator inside a room temperature "bath." In all our insulator lost 9.6 degrees Celsius from our water inside the can. We had the third best insulator in the class. But the winner of the Green class Can Challenge was Samm and Haley's insulator, make of styrofoam and duct tape. So, a decent insulator in a cold water bath could be made mostly out of plumbing insulation (and duct tape), but styrofoam (and duct tape) would serve as the best insulators in a cold water bath.

copalmer said...

My partner, Zander, and I found that the best insulators are ones that have no holes or ways for water to get in. Also, we realized that some of the best materials were duct tape, coffee sleeves, and batting. Our insulator didn't turn out so well, but the materials we used were effective.

hnori said...

An effective insulator would let out the least amount of heat yet it would have to be waterproof in order to prevent the cool water from entering. Me and Gyde's insulator did decent, but we did find a hole in our waterproof material, so we let in water and lost some degrees.

Lucy Lloyd said...

My partner and I used stryrofoam and duct tape as our materials in our insulator. In the previous activity, we figured out that styrofoam was one of the best insulators. However, our insulator did not work successfully. This was probably because there were holes in it where the heat from the soda can could escape. I think this because several other groups used the same materials as us and had success with their insulator, losing only around 7 or 8 degrees celsius. If we had more efficiently covered the soda can, the styrofoam would have done its job.

The none and only said...

An effective insulator for this activity was styrofoam. My partner, Libby, and I used this material for our insulator and the temperature of the water in the can only dropped about 6 or 7 degrees Celsius. Along with styrofoam, we used ducktape and thin cardboard. The cardboard was not really a good insulator, but wrapped tightly around the can did some good I imagine. In conclusion, styrofoam semmed to be the beat insulation choice, when used and wrapped correctly, in this activity considering it was used a lot and was successful multiple times.

Haley Pryor said...

Samm and my insulator worked very well and we used a full cover of styrofoam like many other groups. Ours only dropped a little less than 8 degrees and we waterproofed it with duct tape.