Thermodynamics B/C Build

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Re: Thermodynamics B/C Build

Post by JoeyC » February 17th, 2019, 6:30 pm

Unless you're testing in a controlled environment, inconsistencies will always be there. Especially due to the fact that all ESes are human and can't definitively replicate proper testing conditions to a point; a robot may not even be able to do that. Just plan accordingly and go with your gut.
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Re: Thermodynamics B/C Build

Post by Luna01 » February 18th, 2019, 5:54 pm

Where can u find a beaker with those specific parameters?

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Re: Thermodynamics B/C Build

Post by UTF-8 U+6211 U+662F » February 18th, 2019, 6:03 pm

Luna01 wrote:Where can u find a beaker with those specific parameters?
Any beaker that's close will do, as long as you use it for all your tests. Your science teacher probably has a 250 mL beaker lying around somewhere, and you can ask to borrow it for the season.

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Re: Thermodynamics B/C Build

Post by platinum02 » March 1st, 2019, 12:01 am

Is the k-value calculated using the initial temperature of the water before the water is in the beaker or is it using the initial temperature of the water at the first reading from the thermometer after the water is already in the beaker and inside the box?

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Re: Thermodynamics B/C Build

Post by CookiePie1 » March 1st, 2019, 4:23 am

platinum02 wrote:Is the k-value calculated using the initial temperature of the water before the water is in the beaker or is it using the initial temperature of the water at the first reading from the thermometer after the water is already in the beaker and inside the box?
Yeah, k-value is based on the temperature of the source bath, which is kept constant for all teams.
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Re: Thermodynamics B/C Build

Post by JoeyC » March 1st, 2019, 4:44 am

Is it? I think on some of mine they used the temperature after pouring; they can try, but the source bath's temperature never actually stays the same. In my competitions it usually drops at least 5*C if not more over the course of their water distribution.
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Re: Thermodynamics B/C Build

Post by UTF-8 U+6211 U+662F » March 1st, 2019, 6:48 am

JoeyC wrote:Is it? I think on some of mine they used the temperature after pouring; they can try, but the source bath's temperature never actually stays the same. In my competitions it usually drops at least 5*C if not more over the course of their water distribution.
If it's plugged in properly, the source bath should stay the same. Your beaker water might drop dramatically though.

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Re: Thermodynamics B/C Build

Post by JoeyC » March 1st, 2019, 8:16 am

They didn't plug it in, they just filled a teakettle-like container and brought it around (giving it 10 minutes to cool before it reached us).
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Re: Thermodynamics B/C Build

Post by satvik03 » March 2nd, 2019, 10:50 am

My device has dropped like 10 degrees at competitions before.
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Re: Thermodynamics B/C Build

Post by wec01 » March 2nd, 2019, 3:04 pm

UTF-8 U+6211 U+662F wrote:
JoeyC wrote:Is it? I think on some of mine they used the temperature after pouring; they can try, but the source bath's temperature never actually stays the same. In my competitions it usually drops at least 5*C if not more over the course of their water distribution.
If it's plugged in properly, the source bath should stay the same. Your beaker water might drop dramatically though.
Yeah, usually just the transferring of the water from the bath to the beaker is enough to drop the temperature a considerable amount, even if the beaker is in the device.
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