Thermodynamics B/C

[samuel.barlow003]

Well I don't have a lot of time to waste so do you think waiting only like 5-10 minutes would be long enough. Also, is there some way you can develop an equation to see if the tests are consistent.

At how many different volumes of water should I do tests for.

[MattChina]

Well I don't have a lot of time to waste so do you think waiting only like 5-10 minutes would be long enough. Also, is there some way you can develop an equation to see if the tests are consistent.

At how many different volumes of water should I do tests for.

As many as possible. For states, each increment is 10ml from 50ml to 150ml. That means there are 7 different volumes possible. I would try to test all of them

[CookiePie1]

Well I don't have a lot of time to waste so do you think waiting only like 5-10 minutes would be long enough. Also, is there some way you can develop an equation to see if the tests are consistent.

When I was at a loss for time what I did was between tests put a beaker of ice water in for a few minutes, then take it out and let the device come back to room temp. I think it is easier for the temperature of something to rise than it is to cool down. (I might be wrong though). Also, equations in my opinion arent as reliable as just running a ton of tests. You need everything to be specific to your device, so it is more accurate to test as much as possible.

[TheChiScientist]

Agreed it does take more energy to heat something up (I think don't ask me why) and equations can be immensely inaccurate as there a ton of variables. I would just do a lot of tests

[drcubbin]

How many teams actually go for the ice water bonus? Since it is Ice water volume/10 = ? does it make sense to go for it?

[JoeyC]

It usually doesn't make sense to go for the IWB unless you're absolutely sure you can predict the exact temperature you end up with, and even then, it can still be more detrimental to your score than it is helpful. Last I heard only around 3 teams out of 20 go for the IWB, and it didn't seem to give them any respective edge.

[CookiePie1]

How many teams actually go for the ice water bonus? Since it is Ice water volume/10 = ? does it make sense to go for it?

NO! Its too unpredictable, not worth it at all, it just doesn't make sense.

[TheChiScientist]

I second that as it is basically taking a cyanide pill and hoping for the best You are better off avoiding it. Now if they put actual ice in then you would have latent heat to deal with which is more predictable

[CookiePie1]

You are better off avoiding it. Now if they put actual ice in then you would have latent heat to deal with which is more predictable

What do you mean? How is that more predictable?

[Alex-RCHS]

I second that as it is basically taking a cyanide pill and hoping for the best You are better off avoiding it. Now if they put actual ice in then you would have latent heat to deal with which is more predictable

It’s definitely not like a cyanide pill lol. I don’t see why everyone is acting like it’s an obviously bad idea. It might actually work for certain parameters (I don’t know, I haven’t tested it yet), or it might not help at all, but either way it isn’t immediately obvious that it’s a bad idea.

If anything, ice would be less predictable because you wouldn’t know the temperature of the ice (for sensible heat transfer).