DIY Aquarium Chiller

[felix_fx2]

Sorry for double post.
I've got a friend same name same surname haha. So ironic.

[johnlim]

Your peltier buy which voltage?
Got one side should be hot, you will need to Id which side it is and apply heatsink on that side.

My experience with peltier limited to pc cooling 5 years ago. (was helping someone who built a peltier based cooling machine.)

I only powered the peltier unit from the 12w rail on the molex.

Google has some setup examples.
If it's not detailed, I'll help you find somemore. There should be more gurus here who can help.

On a sidenote hope you understand, wrong choice of pipe can lead to lots of trouble as per stated before in this thread. So thread lightly

ok my peltier is (6-12v 3-5Amp) from SLT WEI KAI can you help me ask them...

[felix_fx2]

confirm cable undersize you need to mod the cable size up.

I agree. Too thin cable will burn cable. Cannot take it cable likely heat up.

If good cable never cool hotside of peltier , peltier spoilt only.

[felix_fx2]

ok my peltier is (6-12v 3-5Amp) from SLT WEI KAI can you help me ask them...

So you got try to google how to setup? Or impulse buy?

[johnlim]

So you got try to google how to setup? Or impulse buy?

i know the way to set up by no sure the wiring can hold the heat ,i have change the wiring ....now i go try out see the wire can hold the heat or not ,if cant i have to go buy 2.5mm wire?to be update after test out .

[eviltrain]

don't try, just get 2.5mm wires. its better for the current flow too and thus increase efficiency.

[felix_fx2]

don't try, just get 2.5mm wires. its better for the current flow too and thus increase efficiency.

You know the pc molex ones how thick?

[johnlim]

You know the pc molex ones how thick?

Hi i have try out this afternoon with thick wire by my 12V 5 A adaptor can boot up the peltier ( 6-12V / 3-5A) keep binking light .

1. peltier - hand feel for both side not cold and hot.
2. Fan - no working also (test fan itself working)

May be need and highter voltage adaptor to try out . anyone can highlight me how to slove this problem ... if can i bring the items down for u all to check ?

[felix_fx2]

Hi i have try out this afternoon with thick wire by my 12V 5 A adaptor can boot up the peltier ( 6-12V / 3-5A) keep binking light .

1. peltier - hand feel for both side not cold and hot.
2. Fan - no working also (test fan itself working)

May be need and highter voltage adaptor to try out . anyone can highlight me how to slove this problem ... if can i bring the items down for u all to check ?

Fan and peltier unit sharing power?
Peltier unit should be fairly simple and I recall never saw light on the ones in pc cooling.
Look from the below link.

http://www.instructables.com/id/5-Mi...-and-Clean-Up/

You mention test fan itself working, so I assume you trying to power 12v 3a unit along with a fan? If so wattage will not suffice.

This weekend I not free my girlfriend birthday, then combo by my mom's.
Plus I want to go sim lim. Monday Tuesday maybe can.

[johnlim]

Fan and peltier unit sharing power?
Peltier unit should be fairly simple and I recall never saw light on the ones in pc cooling.
Look from the below link.

http://www.instructables.com/id/5-Mi...-and-Clean-Up/

You mention test fan itself working, so I assume you trying to power 12v 3a unit along with a fan? If so wattage will not suffice.

This weekend I not free my girlfriend birthday, then combo by my mom's.
Plus I want to go sim lim. Monday Tuesday maybe can.

i mean the light from 12v 5A adaptor not from peltier itself.ok let see when u free to help me..

[felix_fx2]

Lol! I think best try provide a picture.

[khseah79]

[QUOTE=johnlim;622394]Hi i have try out this afternoon with thick wire by my 12V 5 A adaptor can boot up the peltier ( 6-12V / 3-5A) keep binking light .

1. peltier - hand feel for both side not cold and hot. did you use a heat sink on the hot side? if not, please be careful as once overheat there goes ur peltier.
2. Fan - no working also (test fan itself working) I think not enough power for ur fan if the peltier itself is taking up all the 5A

May be need and highter voltage adaptor to try out . anyone can highlight me how to slove this problem ... if can i bring the items down for u all to check? I think for your peltier of 5A you better get a adaptor of at least a 7A so as not to stress the adaptor to max. Best go simlim buy those big rectangle adaptor with metal grill type.[/QUOTE]
BTW, me also thinking modding the dolphin TEM chiller by adding external probe and thermostat.

[felix_fx2]

Mod for kicks is ok. IMO. still lose to compressor.

[johnlim]

Lol! I think best try provide a picture.

ok here come the photo ,by this is from the other 12V 1.5A peltier with 12v 5a adaptor. tested on 17.5 x 13 x 15 tank.For day time the temp 27.7 - 27.8 ,night time 26.3 - 26.8.
as for the 12v 5a peltier i still cant fix it up may need higher amp adaptor to test out?

[johnlim]

[QUOTE=khseah79;622499]

Hi i have try out this afternoon with thick wire by my 12V 5 A adaptor can boot up the peltier ( 6-12V / 3-5A) keep binking light .

1. peltier - hand feel for both side not cold and hot. did you use a heat sink on the hot side? if not, please be careful as once overheat there goes ur peltier.
2. Fan - no working also (test fan itself working) I think not enough power for ur fan if the peltier itself is taking up all the 5A

May be need and highter voltage adaptor to try out . anyone can highlight me how to slove this problem ... if can i bring the items down for u all to check? I think for your peltier of 5A you better get a adaptor of at least a 7A so as not to stress the adaptor to max. Best go simlim buy those big rectangle adaptor with metal grill type.[/QUOTE]
BTW, me also thinking modding the dolphin TEM chiller by adding external probe and thermostat.

hi khseah79,
thanks for the info whice i have when down to SLT LVL 1 Shop have see 1 of the power supply transformer 12V 6A unregulator .can i use this ?

[felix_fx2]

ok here come the photo ,by this is from the other 12V 1.5A peltier with 12v 5a adaptor. tested on 17.5 x 13 x 15 tank.For day time the temp 27.7 - 27.8 ,night time 26.3 - 26.8.
as for the 12v 5a peltier i still cant fix it up may need higher amp adaptor to test out?

The adaptor old one? Got chance not enough power.
The picture is existing working one? The peltier is below the intel 478 fan? No contact with water?

[johnlim]

[QUOTE=felix_fx2;622709]
The adaptor old one? Got chance not enough power. new one
The picture is existing working one? Yes i just made two day ago using low amp peltier 12v 1.5A
The peltier is below the intel 478 fan? no the set up is

• intel 478 fan
• heatsink
• peltier
• heatsink (this heat sink underwater)

No contact with water? contacted with water

[Shadow]

Cant really see from the photo, how do you make the cold side only touching the water? Peltier is quite thin, I suggest put another head sink, no fan, on the cold side and deep it in the water.

[eviltrain]

bro johnlim, you need to make a plastic "water block" for your tank water to pass through it.

your tank is 1.5feet?

[felix_fx2]

Cant really see from the photo, how do you make the cold side only touching the water? Peltier is quite thin, I suggest put another head sink, no fan, on the cold side and deep it in the water.

Shadow, do you think CPU heat sink will corode? i have a few of them at home

bro johnlim, you need to make a plastic "water block" for your tank water to pass through it.

water block? the dolphin one use what material?

your tank is 1.5feet?