Thermodynamics B/C Build

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Thermodynamics B/C Build

Postby TheChiScientist » Tue Sep 04, 2018 4:19 pm

Please use this forum to discuss issues and questions on the build portion of Thermodynamics.
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Re: Thermodynamics B/C Build

Postby UTF-8 U+6211 U+662F » Tue Sep 04, 2018 8:40 pm

TheChiScientist wrote:Please use this forum to discuss issues and questions on the build portion of Thermodynamics.

I think the point of the subforum was so that questions about the build could have their own thread :P Nevertheless, I suppose it makes sense to have a thread for minor questions.

Looks like the build hasn't really changed, besides being able to plug the hole. Can someone who has time check if there were any interesting deletions in the rules (because obviously they can't bold those)?

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Re: Thermodynamics B/C Build

Postby TheChiScientist » Tue Sep 04, 2018 9:54 pm

UTF-8 U+6211 U+662F wrote:
TheChiScientist wrote:Please use this forum to discuss issues and questions on the build portion of Thermodynamics.

I think the point of the subforum was so that questions about the build could have their own thread :P Nevertheless, I suppose it makes sense to have a thread for minor questions.

Looks like the build hasn't really changed, besides being able to plug the hole. Can someone who has time check if there were any interesting deletions in the rules (because obviously they can't bold those)?

As I read over them with a fine tooth comb there are no removals that I can see. Although with the additions there goes my designs for a vacuum sealed box...
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Re: Thermodynamics B/C Build

Postby pikachu4919 » Tue Sep 04, 2018 10:42 pm

TheChiScientist wrote:
UTF-8 U+6211 U+662F wrote:
TheChiScientist wrote:Please use this forum to discuss issues and questions on the build portion of Thermodynamics.

I think the point of the subforum was so that questions about the build could have their own thread :P Nevertheless, I suppose it makes sense to have a thread for minor questions.

Looks like the build hasn't really changed, besides being able to plug the hole. Can someone who has time check if there were any interesting deletions in the rules (because obviously they can't bold those)?

As I read over them with a fine tooth comb there are no removals that I can see. Although with the additions there goes my designs for a vacuum sealed box...


I feel like if you make one of those in house then it would be fine, you just can’t buy a commercial one and use it as part of your build.
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Re: Thermodynamics B/C Build

Postby Alex-RCHS » Tue Sep 04, 2018 10:49 pm

TheChiScientist wrote:
UTF-8 U+6211 U+662F wrote:
TheChiScientist wrote:Please use this forum to discuss issues and questions on the build portion of Thermodynamics.

I think the point of the subforum was so that questions about the build could have their own thread :P Nevertheless, I suppose it makes sense to have a thread for minor questions.

Looks like the build hasn't really changed, besides being able to plug the hole. Can someone who has time check if there were any interesting deletions in the rules (because obviously they can't bold those)?

As I read over them with a fine tooth comb there are no removals that I can see. Although with the additions there goes my designs for a vacuum sealed box...

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Re: Thermodynamics B/C Build

Postby TheChiScientist » Tue Sep 04, 2018 10:53 pm

A cheap and fully operational vacuum can be easily made. You just need the build skills...
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Re: Thermodynamics B/C Build

Postby TheChiScientist » Thu Sep 06, 2018 1:45 pm

Is it just me or did they get rid of the ice water bonus!?!?!?!?!??!?!! (smh how did I miss that!)
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Re: Thermodynamics B/C Build

Postby UTF-8 U+6211 U+662F » Thu Sep 06, 2018 7:41 pm

TheChiScientist wrote:Is it just me or did they get rid of the ice water bonus!?!?!?!?!??!?!! (smh how did I miss that!)

They also removed the outside beaker, so the material of beakers might come into play (although the beaker does have to be unaltered).

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Re: Thermodynamics B/C Build

Postby TheChiScientist » Thu Sep 06, 2018 7:44 pm

UTF-8 U+6211 U+662F wrote:
TheChiScientist wrote:Is it just me or did they get rid of the ice water bonus!?!?!?!?!??!?!! (smh how did I miss that!)

They also removed the outside beaker, so the material of beakers might come into play (although the beaker does have to be unaltered).

Interesting. So this year the score is going to be mainly dependent on Newton's law of cooling no?
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Re: Thermodynamics B/C Build

Postby UTF-8 U+6211 U+662F » Thu Sep 06, 2018 7:51 pm

TheChiScientist wrote:
UTF-8 U+6211 U+662F wrote:
TheChiScientist wrote:Is it just me or did they get rid of the ice water bonus!?!?!?!?!??!?!! (smh how did I miss that!)

They also removed the outside beaker, so the material of beakers might come into play (although the beaker does have to be unaltered).

Interesting. So this year the score is going to be mainly dependent on Newton's law of cooling no?

That's what it says in the rules

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Re: Thermodynamics B/C Build

Postby TheChiScientist » Sat Sep 08, 2018 3:01 am

So what type of thermometers do you guys use for maximum accuracy? (I go digital)
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Re: Thermodynamics B/C Build

Postby UTF-8 U+6211 U+662F » Sat Sep 08, 2018 3:42 am

TheChiScientist wrote:So what type of thermometers do you guys use for maximum accuracy? (I go digital)

I.. just use alcohol thermometers. Sure, they're not too accurate but hey they pretty much work.

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Re: Thermodynamics B/C Build

Postby Jacobi » Sun Sep 16, 2018 3:27 pm

What kind of model do you use to predict temperature? I used a simple exponential model, but it was hard to correct for the specific heat of the device.

Any and all help appreciated.
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Re: Thermodynamics B/C Build

Postby TheChiScientist » Sun Sep 16, 2018 3:35 pm

Jacobi wrote:What kind of model do you use to predict temperature? I used a simple exponential model, but it was hard to correct for the specific heat of the device.

Any and all help appreciated.

Is your exponential model based on a line of best fit or one data set only? I would recommend sticking to one data set as it is less time consuming and the use simple exponential model. That should make work easier... Not sure what else could be done but it did help me get 1st place at the ISO state tournament. :D Feel free to ask questions as I am happy to help. (Shame I ain't doing thermo this year...) :cry:
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Re: Thermodynamics B/C Build

Postby Jacobi » Sun Sep 16, 2018 3:38 pm

TheChiScientist wrote:
Jacobi wrote:What kind of model do you use to predict temperature? I used a simple exponential model, but it was hard to correct for the specific heat of the device.

Any and all help appreciated.

Is your exponential model based on a line of best fit or one data set only? I would recommend sticking to one data set as it is less time consuming and the use simple exponential model. That should make work easier... Not sure what else could be done but it did help me get 1st place at the ISO state tournament. :D Feel free to ask questions as I am happy to help. (Shame I ain't doing thermo this year...) :cry:

We did lots of data sets on various runs.
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