Chief Delphi - Can we use cooling? If so, is water allowed?

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- - Can we use cooling? If so, is water allowed? (http://www.chiefdelphi.com/forums/showthread.php?t=109301)

oyasunadev

27-10-2012 14:57

Can we use cooling? If so, is water allowed?

I'm from team 2079, Alarm Robotics (website coming soon), and we are wondering if any type of cooling is allowed. Preferably water cooling, but if that's not allowed, is fan cooling allowed?

Thanks!

DonRotolo

27-10-2012 18:59

Re: Can we use cooling? If so, is water allowed?

Of course, we don't know what the 2013 rules might allow, but for 2012 fan cooling is generally allowed (using KOP fans) and water cooling could be allowed so long as the water cant get out and a legal motor powers the pump (if any). Check the rules for your specific circumstance.

akoscielski3

27-10-2012 19:07

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by DonRotolo (Post 1191846)

Are you sure they would need to use a legal motor? In 2010 didn't teams use vaccum's that didn't use legal motors?

Mark McLeod

27-10-2012 19:24

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by akoscielski3 (Post 1191847)

In 2010 didn't teams use vaccum's that didn't use legal motors?

No, they did not.

Akash Rastogi

27-10-2012 19:26

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by akoscielski3 (Post 1191847)

Are you sure they would need to use a legal motor? In 2010 didn't teams use vaccum's that didn't use legal motors?

Nope, these motors were replaced with kit motors. Mostly FP motors, if I recall correctly.

mrmummert

27-10-2012 20:34

Re: Can we use cooling? If so, is water allowed?

Hmmmm....cooling....but maybe not water cooling...hmmmm...
How about Dry Ice....no water to clean up and the fog factor is
kinda cool. You might not wanna hold it with bare hands though.

CalTran

27-10-2012 20:45

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by mrmummert (Post 1191856)

Hmmmm....cooling....but maybe not water cooling...hmmmm...
How about Dry Ice....no water to clean up and the fog factor is
kinda cool. You might not wanna hold it with bare hands though.

Echoing the post about not knowing what 2013 will hold, we can be fairly certain the ban on dangerous and or harmful materials will stand. I don't think a dry ice cooling system would be legal, as effective as it may be.

gyroscopeRaptor

27-10-2012 20:50

Re: Can we use cooling? If so, is water allowed?

Some teams machined heatsinks, but they are near useless unless cooled by high flow fans.

Andrew Lawrence

27-10-2012 21:51

Re: Can we use cooling? If so, is water allowed?

My team keeps a small container with rags and ice in it, and if we ever need to cool our motors before/after/during a match, we wrap the motors in the rags. They're really cold due to the ice, and relatively dry (Just wring them out before applying). We've zip tied them to the CIMs before going out for matches if we thought the motors would heat up a lot. Works great!

CalTran

27-10-2012 21:58

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by SuperNerd256 (Post 1191861)

That sounds interesting...I'll have to pick up some ice on my way to class sometime so I can try that out. D'you use dry or regular ice in the bucket?

Andrew Lawrence

27-10-2012 23:09

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by CalTran (Post 1191862)

That sounds interesting...I'll have to pick up some ice on my way to class sometime so I can try that out. D'you use dry or regular ice in the bucket?

Regular. Dry ice would be great, but we always have that one student who chews on ice, and if they don't hear us say it's dry ice, things may go badly...

Pretty much regular because safety.

CalTran

27-10-2012 23:18

Re: Can we use cooling? If so, is water allowed?

That makes things simpler. Less of a hassle to get my hands on (no pun intended.)

John	27-10-2012 23:34

Re: Can we use cooling? If so, is water allowed?

Because the motor cooling is mostly limited by heat transfer to the case from the armature, and not by heat transfer from the case to the outside air, you will mostly just make the surface of the motor cooler, not the parts that you actually care about cooling (regardless of the method used).

Quote:

Originally Posted by Al Skierkiewicz (Post 1176252)

Since the CIMs are sealed there is virtually no effective way to cool them. The majority of heat is built up in the armature. the only path for this heat to escape to the outside of the motor is through the end shafts, bearings and then to the end plates. Some heat can be radiated from the armature through the air to the magnet structure and case but this will produce very little cooling.

connor.worley

27-10-2012 23:57

Re: Can we use cooling? If so, is water allowed?

How to cool your robot in 30 seconds:

Get a can of compressed air
Turn it upside down
Spray motors with coolant for 30 seconds

daniel_dsouza

28-10-2012 00:11

Re: Can we use cooling? If so, is water allowed?

Quote:

Originally Posted by SuperNerd256 (Post 1191869)

Regular. Dry ice would be great, but we always have that one student who chews on ice, and if they don't hear us say it's dry ice, things may go badly...

Pretty much regular because safety.

Plus, you shouldn't keep dry ice in an air tight cooler. Your cooler could pop. In addition, normal ice is easier to obtain.

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