Old 11-01-2007, 10:54 PM #1
Class 2M Laser
 
Join Date: Jul 2007
Posts: 833
Rep Power: 38
Rhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond repute
Send a message via AIM to Rhith Send a message via MSN to Rhith
Rhith Rhith is offline
Class 2M Laser
 
Join Date: Jul 2007
Posts: 833
Rep Power: 38
Rhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond repute
Send a message via AIM to Rhith Send a message via MSN to Rhith
Default TECs sure can be fun!

I started out small, didn't realize that some moving air would help keep the heat sink from become a fireball!

Then we got some fans going!

A few drips of water and a time later...


Rhith is offline   Reply With Quote


















Old 11-01-2007, 11:40 PM #2
Class 1M Laser
 
Join Date: Sep 2007
Location: Nashville, TN
Posts: 169
Rep Power: 22
jayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud of
jayhawker08 jayhawker08 is offline
Class 1M Laser
 
Join Date: Sep 2007
Location: Nashville, TN
Posts: 169
Rep Power: 22
jayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud ofjayhawker08 has much to be proud of
Default Re: TECs sure can be fun!

nice. now, i don't know much about TECs, does the opposite side get hot (one side cold, the other hot)?
jayhawker08 is offline   Reply With Quote
Old 11-02-2007, 01:06 AM #3
Class 1M Laser
 
Join Date: Sep 2007
Posts: 123
Rep Power: 11
dingle is on a distinguished road
dingle dingle is offline
Class 1M Laser
 
Join Date: Sep 2007
Posts: 123
Rep Power: 11
dingle is on a distinguished road
Default Re: TECs sure can be fun!

They pretty much move all the heat thats in them to one side, leaving the other super cold. There is a maximum difference of temp between the two sides, so cooling the hot side with a heatsink is essential to getting the cold side colder. Running for just a few minutes w/o a fan, the heatsink can become hard to pick up because of the heat.
dingle is offline   Reply With Quote
Old 11-02-2007, 02:45 AM #4
Class 2M Laser
 
Join Date: Jul 2007
Posts: 833
Rep Power: 38
Rhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond repute
Send a message via AIM to Rhith Send a message via MSN to Rhith
Rhith Rhith is offline
Class 2M Laser
 
Join Date: Jul 2007
Posts: 833
Rep Power: 38
Rhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond repute
Send a message via AIM to Rhith Send a message via MSN to Rhith
Default Re: TECs sure can be fun!

Exactly right! I had to use something to pick up my heat sink and move it to the freezer for a while when I didn't run it with any fans! :
Rhith is offline   Reply With Quote
Old 11-02-2007, 02:51 AM #5
Class 2M Laser
 
Join Date: May 2007
Posts: 635
Rep Power: 34
Greenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond repute
Send a message via MSN to Greenie
Greenie Greenie is offline
Class 2M Laser
 
Join Date: May 2007
Posts: 635
Rep Power: 34
Greenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond reputeGreenie has a reputation beyond repute
Send a message via MSN to Greenie
Default Re: TECs sure can be fun!

HeHe very nice.
Greenie is offline   Reply With Quote
Old 11-02-2007, 02:53 AM #6
Member
 
Join Date: Jul 2007
Posts: 38
Rep Power: 0
gyrodryve is a jewel in the roughgyrodryve is a jewel in the roughgyrodryve is a jewel in the rough
gyrodryve gyrodryve is offline
Member
 
Join Date: Jul 2007
Posts: 38
Rep Power: 0
gyrodryve is a jewel in the roughgyrodryve is a jewel in the roughgyrodryve is a jewel in the rough
Default Re: TECs sure can be fun!

I've been playing with one recently too and did the no fan trick - had to pick up the heatsink with oven mitts. Bloody hell it got hot!
gyrodryve is offline   Reply With Quote
Old 11-02-2007, 04:10 AM #7
charleytown55il's Avatar
Class 2 Laser
 
Join Date: Oct 2007
Location: charleston, IL
Posts: 466
Rep Power: 76
charleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond repute
charleytown55il charleytown55il is offline
Class 2 Laser
charleytown55il's Avatar
 
Join Date: Oct 2007
Location: charleston, IL
Posts: 466
Rep Power: 76
charleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond reputecharleytown55il has a reputation beyond repute
Default Re: TECs sure can be fun!

what temp on the hot side will kill it?
__________________
Nova laser x-65 98mw peak, 82 average.
dx 30mw "true green"
lyra 5mw


Hobart Handler 210 w/spool gun
thermal arc 400GMS CC/CV
Everlast 225 amp AC/DC Tig
40 amp plasma torch
Grizzly 10" x 22" Lathe
Grizzly 15" x 5.5" Vertical Mill
Stainless steel tool box loaded with tools.
charleytown55il is offline   Reply With Quote
Old 11-02-2007, 04:27 AM #8
Class 4 Laser
 
Join Date: May 2007
Location: Queensland, AU
Posts: 7,549
Rep Power: 495363
Things has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond repute
Things Things is offline
Class 4 Laser
 
Join Date: May 2007
Location: Queensland, AU
Posts: 7,549
Rep Power: 495363
Things has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond reputeThings has a reputation beyond repute
Default Re: TECs sure can be fun!

hehehe i love making ice with TEC's! once mine got down to about -8C and it froze the water as soon as it touched it! nice work!
Things is offline   Reply With Quote
Old 11-02-2007, 01:25 PM #9
Class 2M Laser
 
Join Date: Jul 2007
Posts: 833
Rep Power: 38
Rhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond repute
Send a message via AIM to Rhith Send a message via MSN to Rhith
Rhith Rhith is offline
Class 2M Laser
 
Join Date: Jul 2007
Posts: 833
Rep Power: 38
Rhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond reputeRhith has a reputation beyond repute
Send a message via AIM to Rhith Send a message via MSN to Rhith
Default Re: TECs sure can be fun!

I'm not sure what temp will kill the TECs but if it's getting that hot in the first place it won't be able to cool that well so you'll know to turn it off and cool it down.

Also, I plan to get some thermal paste after school and that should help my TECs push a little harder. So far it seems that my smaller (30x30mm) TECs are running cooler then my larger (40x40mm) TECs. I'm guessing this is due to the amount of heat it is dispersing onto my heatsink that is preventing it from working as hard. This is another instance where I think a bit of thermal paste will eb helping me out.
Rhith is offline   Reply With Quote
Old 11-02-2007, 02:22 PM #10
Class 2M Laser
 
Join Date: Feb 2007
Posts: 810
Rep Power: 19
Tallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really nice
Tallaxo Tallaxo is offline
Class 2M Laser
 
Join Date: Feb 2007
Posts: 810
Rep Power: 19
Tallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really nice
Default Re: TECs sure can be fun!

I have never been able to get my TEC that cold, hmmm, maybe I need to start using a heatsink, or up the voltage.

Jase.

Attached Thumbnails
TECs sure can be fun!-kvp116134hikuykavk3623.jpg  
Tallaxo is offline   Reply With Quote
Old 11-02-2007, 02:28 PM #11
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,445
Rep Power: 7323096
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,445
Rep Power: 7323096
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: TECs sure can be fun!

Stack three of them on top of each other and water-cool the bottom end. Maybe you can make liquid nitrogen.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 11-02-2007, 02:34 PM #12
Class 2M Laser
 
Join Date: May 2007
Posts: 534
Rep Power: 14
Aseras is on a distinguished road
Aseras Aseras is offline
Class 2M Laser
 
Join Date: May 2007
Posts: 534
Rep Power: 14
Aseras is on a distinguished road
Default Re: TECs sure can be fun!

you need to pot your tec, coat the side with silicone, if you get water in there they'll die. it's especially important if you are goint to go subzero since the cold side will get condensation and after a while you'll gt corrosion in there you can't get out or clean.
Aseras is offline   Reply With Quote
Old 11-02-2007, 04:05 PM #13
Class 3R Laser
 
Join Date: Oct 2006
Posts: 2,032
Rep Power: 32
pseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud of
pseudonomen137 pseudonomen137 is offline
Class 3R Laser
 
Join Date: Oct 2006
Posts: 2,032
Rep Power: 32
pseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud ofpseudonomen137 has much to be proud of
Default Re: TECs sure can be fun!

Hehe, yep, if you plan on using a TEC for cooling, a heatsink is 110% mandatory. Deferring to the lovely "all processes are inefficient", if you don't have something to draw away the extra heat produced by a TEC, you're only going in one direction - hotter. Without a heatsinking, you'll eventually have a hot side, and a VERY hot side.


Quote:
Originally Posted by Tallaxo
I have never been able to get my TEC that cold, hmmm, maybe I need to start using a heatsink, or up the voltage.

Jase.
pseudonomen137 is offline   Reply With Quote
Old 11-02-2007, 06:10 PM #14
Class 2M Laser
 
Join Date: Feb 2007
Posts: 810
Rep Power: 19
Tallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really nice
Tallaxo Tallaxo is offline
Class 2M Laser
 
Join Date: Feb 2007
Posts: 810
Rep Power: 19
Tallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really niceTallaxo is just really nice
Default Re: TECs sure can be fun!

That makes a lot of sense, thanks Pseudo

Jase
Attached Thumbnails
TECs sure can be fun!-homtanks.jpg  
Tallaxo is offline   Reply With Quote
Old 11-02-2007, 08:04 PM #15
danielbriggs's Avatar
Class 2 Laser
 
Join Date: Aug 2007
Posts: 380
Rep Power: 13
danielbriggs is on a distinguished road
danielbriggs danielbriggs is offline
Class 2 Laser
danielbriggs's Avatar
 
Join Date: Aug 2007
Posts: 380
Rep Power: 13
danielbriggs is on a distinguished road
Default Re: TECs sure can be fun!

DON'T up the voltage too much. That will kill it. (kind of).
It's the current you need to crank up, I don't know what wattage peltier you've got, but if it's 200W say, it will easily (and happlily) eat 20 amps DC.

Also, if you can get your head round this, then you can do anything with TEC's!
The cooler the hot side, the cooler the cool side *:P
I'm sure there must be a better way to phrase that!

I used a couple of pelts in my school tech project, It was a drinks cooler / heater. It went on to win 1st prize in the UK national desgin competition *

Usually, you'll get about 67 deg C temp difference from one side to another. I have some current/temp graphs around somewhere. PM me if you're interested.

Dan :-)
danielbriggs is offline   Reply With Quote
Old 11-02-2007, 08:42 PM #16
Class 2M Laser
 
Join Date: Aug 2007
Posts: 790
Rep Power: 24
a_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to behold
a_pyro_is a_pyro_is is offline
Class 2M Laser
 
Join Date: Aug 2007
Posts: 790
Rep Power: 24
a_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to beholda_pyro_is is a splendid one to behold
Default Re: TECs sure can be fun!

Quote:
Originally Posted by danielbriggs
The cooler the hot side, the cooler the cool side :P
Mmmmm. Stacking TECs

GIANT fan
HUGE heatsink
Hot side of big TEC
Cold side of big TEC
Thin bar of Cu
Hot side of medium TEC
Cold side of medium TEC
Thin bar of Cu
Hot side of small TEC
Cold side of small TEC

Throw in a few thermal cutoff switches and see how cold you can make it. DIY dry ice anyone? I'd hate to try building the PSU for that monster.
a_pyro_is is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



























Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 01:03 AM.


Powered by: vBulletin
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC