Thermodynamics B/C Build

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Creationist127
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Re: Thermodynamics B/C Build

Postby Creationist127 » December 20th, 2018, 12:18 pm

MadCow2357 wrote:
MattChina wrote:
didntstart wrote:Does the competition provide the cube?

What cube are u talking about? Also as for your previous question yes, I built my box out of insulation foam. Try not to double post next time.

I think he meant the Thermo box :( ... If so, please read the rules a few more times...

Do you mean the 15x15x15 cube used to measure the device? If that's what you meant, they usually just use a standard ruler to measure.
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Re: Thermodynamics B/C Build

Postby CookiePie1 » December 22nd, 2018, 9:31 am

MadCow2357 wrote:
MattChina wrote:
didntstart wrote:Does the competition provide the cube?

What cube are u talking about? Also as for your previous question yes, I built my box out of insulation foam. Try not to double post next time.

I think he meant the Thermo box :( ... If so, please read the rules a few more times...


Does he mean the measurement cube? Usually event supervisors won't go out of their way to make a measurement cube; they will just measure with a ruler or something of the like.
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Re: Thermodynamics B/C Build

Postby satvik03 » January 7th, 2019, 4:04 pm

In my limited and humble experience, they normally just measure if the sides are 15 cm for div c and 20 for div b. However, they did use parts of boxes at a few comps...
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Re: Thermodynamics B/C Build

Postby UTF-8 U+6211 U+662F » January 7th, 2019, 5:47 pm

satvik03 wrote:In my limited and humble experience, they normally just measure if the sides are 15 cm for div c and 20 for div b. However, they did use parts of boxes at a few comps...

Confirming that that's what they did last year at all my competitions (also measured the distance of the hole)

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Re: Thermodynamics B/C Build

Postby geniusjohn5 » January 7th, 2019, 9:51 pm

I'm a little confused by "Heat Score" and the event itself. Is one of the goals to achieve the minimum change in heat/temp loss using the device AND predict the change OR is JUST the prediction in the change in temp considered in the final score? Also what exactly does the "heat score"/ k value mean?

Sorry. I'm pretty much a noob :P
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Re: Thermodynamics B/C Build

Postby knightmoves » January 7th, 2019, 10:29 pm

geniusjohn5 wrote:I'm a little confused by "Heat Score" and the event itself. Is one of the goals to achieve the minimum change in heat/temp loss using the device AND predict the change OR is JUST the prediction in the change in temp considered in the final score?


The Heat Score measures how well the box retains heat, and as you say, minimum heat loss is good. The Prediction Score measures how well you predict the final temperature. Both are important.

k is the reciprocal of the time constant from Newton's law of cooling.

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Re: Thermodynamics B/C Build

Postby geniusjohn5 » January 8th, 2019, 9:06 pm

What type of material is ideal for this event? Both cheap, easy to obtain, and effective at retaining heat.
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Re: Thermodynamics B/C Build

Postby MadCow2357 » January 9th, 2019, 3:48 am

geniusjohn5 wrote:What type of material is ideal for this event? Both cheap, easy to obtain, and effective at retaining heat.

Ummm I'm using 1/2" foam board. Foam is kinda obvious isn't it?
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Re: Thermodynamics B/C Build

Postby RockRoll92 » January 9th, 2019, 4:43 am

MadCow2357 wrote:
geniusjohn5 wrote:What type of material is ideal for this event? Both cheap, easy to obtain, and effective at retaining heat.

Ummm I'm using 1/2" foam board. Foam is kinda obvious isn't it?


Pretty much any type of insulation that is allowed if it fits within your building space and will be able to be worked to make your device within construction parameters.
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Re: Thermodynamics B/C Build

Postby CookiePie1 » January 9th, 2019, 12:17 pm

Rock&Roll92 wrote:
MadCow2357 wrote:
geniusjohn5 wrote:What type of material is ideal for this event? Both cheap, easy to obtain, and effective at retaining heat.

Ummm I'm using 1/2" foam board. Foam is kinda obvious isn't it?


Pretty much any type of insulation that is allowed if it fits within your building space and will be able to be worked to make your device within construction parameters.


The material you use is really a matter of choice. Depending on how much money you're willing to sink on this event, you would use different materials. I would recommend doing some research and making a decision based on how good the insulation is and how much it costs.
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Re: Thermodynamics B/C Build

Postby satvik03 » January 9th, 2019, 4:27 pm

geniusjohn5 wrote:I'm a little confused by "Heat Score" and the event itself. Is one of the goals to achieve the minimum change in heat/temp loss using the device AND predict the change OR is JUST the prediction in the change in temp considered in the final score? Also what exactly does the "heat score"/ k value mean?

Sorry. I'm pretty much a noob :P


It took me a lot of time to understand the rules too.
Final Score out of 100 = (Heat Score/20)+(Prediction Score/25)+(Test Score/45)+(Chart Score/10)
So yeah, minimum change in heat AND predict the final temp
k is from newton's cooling law
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Re: Thermodynamics B/C Build

Postby geniusjohn5 » January 10th, 2019, 9:58 pm

Should the insulating device be relatively thin or thick??
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Re: Thermodynamics B/C Build

Postby MattChina » January 11th, 2019, 4:34 am

geniusjohn5 wrote:Should the insulating device be relatively thin or thick??

as Thicc as possible
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Re: Thermodynamics B/C Build

Postby MadCow2357 » January 11th, 2019, 6:34 am

MattChina wrote:
geniusjohn5 wrote:Should the insulating device be relatively thin or thick??

as Thicc as possible

Lmao yessss
Yeah but make sure you leave space for the beaker
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Re: Thermodynamics B/C Build

Postby geniusjohn5 » January 11th, 2019, 11:55 am

^Thanks for the responses above guys! Anotha one (sorry): should they device be relatively light or heavy and WHY??
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