Thermodynamics B/C

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Re: Thermodynamics B/C

Post by UTF-8 U+6211 U+662F » April 8th, 2018, 12:04 pm

TheChiScientist wrote:Yea.^Btw my box at these numbers is at 39.7C
ftfy

This is kind of pointless since our beakers are all different, isn't it? I'm at 25 outside/36 inside (just built a lame wooden box with foam :P)
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Re: Thermodynamics B/C

Post by TheChiScientist » April 8th, 2018, 12:15 pm

Does that say 50? Dang son well my next design is more complex but state is coming up so it's more for next year.In theory, it should insulate a ton more allowing only a 10C drop on average.
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Re: Thermodynamics B/C

Post by UTF-8 U+6211 U+662F » April 8th, 2018, 12:36 pm

TheChiScientist wrote:Does that say 50? Dang son well my next design is more complex but state is coming up so it's more for next year.In theory, it should insulate a ton more allowing only a 10C drop on average.
Does what say 50

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Re: Thermodynamics B/C

Post by TheChiScientist » April 8th, 2018, 12:40 pm

the ftfty thing is small print?
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Re: Thermodynamics B/C

Post by Alex-RCHS » April 8th, 2018, 12:48 pm

Thanks, yeah I'm at around 39 as well. I thought that was strangely low, but it actually seems about right then.
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Re: Thermodynamics B/C

Post by arv101 » April 8th, 2018, 12:59 pm

What methods do you guys use to find certain conditions you havent tested. For example @ 50 mL say you have 60 C and 70C data points, then how would you find say 63 C?
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Re: Thermodynamics B/C

Post by Alex-RCHS » April 8th, 2018, 1:04 pm

arv101 wrote:What methods do you guys use to find certain conditions you havent tested. For example @ 50 mL say you have 60 C and 70C data points, then how would you find say 63 C?
You can find the function of the line going right through those points. The function would be final temperature as a function of starting temperature, and it would be as simple as y = mx + b. Then plug in 63.
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Re: Thermodynamics B/C

Post by wzhang5460 » April 8th, 2018, 1:57 pm

I'm getting around 45.3C with 50ml, 60C, 30 minutes
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Re: Thermodynamics B/C

Post by UTF-8 U+6211 U+662F » April 8th, 2018, 2:05 pm

Alex-RCHS wrote:
arv101 wrote:What methods do you guys use to find certain conditions you havent tested. For example @ 50 mL say you have 60 C and 70C data points, then how would you find say 63 C?
You can find the function of the line going right through those points. The function would be final temperature as a function of starting temperature, and it would be as simple as y = mx + b. Then plug in 63.
This isn't the greatest idea, since it's very doubtful the data will form a line. The only way to know what the data is going to turn out like is to test it (which is painful, I know)

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Re: Thermodynamics B/C

Post by Alex-RCHS » April 8th, 2018, 2:40 pm

UTF-8 U+6211 U+662F wrote:
Alex-RCHS wrote:
arv101 wrote:What methods do you guys use to find certain conditions you havent tested. For example @ 50 mL say you have 60 C and 70C data points, then how would you find say 63 C?
You can find the function of the line going right through those points. The function would be final temperature as a function of starting temperature, and it would be as simple as y = mx + b. Then plug in 63.
This isn't the greatest idea, since it's very doubtful the data will form a line. The only way to know what the data is going to turn out like is to test it (which is painful, I know)
Lol, it’ll be close enough. The relationship may not be exactly linear but it will be very, very close to it. You might be off an extra 0.2 degrees or something but it’s worth the time saved. Spend that extra time studying instead.

Also, there are other functions you can make which would model the data more closely, but that’s up to you.
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