Thermodynamics B/C

[WhatScience?]

Oh, well then. I use the box in a box design but keep it small. Because while a big device offers more insulation, it is harder to prevent holes in you insulation if using common materials. With the small space left, I just stuff it with stuff I find around my house that I think would be reasonably good insulation. Honestly, if any insulation is good enough, very little to no heat will escape. Obviously overtime, Aerogel will be better but for the short timeframe that is this competition, you should be fine with stuff you find around the house.

Good Luck! And I am not Joking!

What was the lid?

Or coach is a wood shop teacher so I just used wood. He obviously knew what he was doing with wood...

[kendreaditya]

So your device is a box in a box, filled with random thermal insulators found around the house, with a wooden lid. How can this get a near perfect heat retention?
You have no way to keep radiation and prevent convection from happening.

My device is a beaker in beaker design, where the water holding beaker is in a capsule surrounded by polyurethane and that's surrounded by aerogel. My lid is a styrofoam circle with aluminum to reflect the radiation that tries to escape. I get nowhere near perfect heat retention. In fact, here is my graph:

[Alex-RCHS]

Honestly guys, is stuff like Aerogel even nessacary? You can get perfect heat retention (I have tried) without it. Just though to let you know that a good design can equal and even overcome splurging on aerogel.

SAVE YOUR MONEY

Perfect heat retention is impossible.

What are you using to measure temperature?

[kendreaditya]

Honestly guys, is stuff like Aerogel even nessacary? You can get perfect heat retention (I have tried) without it. Just though to let you know that a good design can equal and even overcome splurging on aerogel.

SAVE YOUR MONEY

Perfect heat retention is impossible.

What are you using to measure temperature?

Especially with a 1.5cm hole in the lid.

[WhatScience?]

Honestly guys, is stuff like Aerogel even nessacary? You can get perfect heat retention (I have tried) without it. Just though to let you know that a good design can equal and even overcome splurging on aerogel.

SAVE YOUR MONEY

Perfect heat retention is impossible.

What are you using to measure temperature?

Especially with a 1.5cm hole in the lid.

First of, this was years before my time.

Second, you are allowed to plug the hole.

I have replicated the design and I can tell you this, for SOME temperature, time combinations, the thermometer does not sense a difference in between the starting temp and the final temp.

[Unome]

Second, you are allowed to plug the hole.

This is absolutely not true - see the last sentence of 3.e.

[WhatScience?]

Second, you are allowed to plug the hole.

This is absolutely not true - see the last sentence of 3.e.

Thank you so much!!! You have saved me

[Natecu]

Second, you are allowed to plug the hole.

This is absolutely not true - see the last sentence of 3.e.

Thank you so much!!! You have saved me

Also, you should probably get a new thermometer.

[WhatScience?]

This is absolutely not true - see the last sentence of 3.e.

Thank you so much!!! You have saved me

Also, you should probably get a new thermometer.

Now this is just bullying

[WhatScience?]

Thank you so much!!! You have saved me

Also, you should probably get a new thermometer.

Now this is just bullying

Thermo the thermometer is perfectly fine. He has been in our school for 30 years.