DIY Pico Chiller

Discussion in 'Anything DIY Related' started by Gerhard DP, 19 Oct 2013.

  1. Gerhard DP

    Gerhard DP

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    In our old home we had this cool spot where the tank was just fine even during the summer. In our new house my tank is overheating and I cant find a cool spot.

    So I urgently need to build me a Chiller/cooler or let the tank go before things turn for the worse.

    Was thinking either a chiller type box or iceprobe, both using thermoelectric components to cool it.

    I need some help though and my internet is dead slow.

    I need to source some things and you guys might be able to help search.

    List of what I need:

    1. Thermoelectric module
    2. Something, epoxy, rubber or something to cover the aluminum rod that goes into the water.
    3. Quiet cooling fan.
    4. Ideas on controlling on and of for the unit?

    I was leaning more towards something like an iceprobe because it will not have to include extra pipes and pumps in the tank.

    Please share some thoughts and resources please, it is quite urgent I get this sorted.

    O and if all else fail and somebody has a really really cheap small chiller to sell that will work too
     
    Last edited by a moderator: 19 Oct 2013
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  3. Wesd

    Wesd

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    tagging, would be cool to see if you manage to put something together, at the moment on hot days i keep my 30L at a fairly stable temp by : closing the windows, door and blind in my room and place a 2L icecream tub filled with ice and a little bit of water next to the tank, then have the ceiling fan on full
     
  4. KeeganP

    KeeganP

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    Last edited by a moderator: 11 Apr 2016
  5. HOT SAUCE

    HOT SAUCE

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    @Keeganp thats just brilliant. with a much larger heatsink ne should be able to achieve much better results.. but since its for a pico this should work 100%.
     
    Last edited by a moderator: 26 Nov 2015
  6. HOT SAUCE

    HOT SAUCE

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    i wonder if aluminum is safe to be in contact with the salt water
     
  7. KeeganP

    KeeganP

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    Yeah, It's pretty neat, but you buy the whole thing as a unit, "Coolworks Ice probe"

    The probe is coated,
    "The solid aluminum probe which contacts the water is coated with a very durable FDA compliant material"

    http://www.novatecproducts.com/IPAC-50Manual10-28-03.pdf

    It's actually intended to go inside the tank, but obviously this isn't for everybody.
     
  8. HOT SAUCE

    HOT SAUCE

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    it gives me some ideas for a DIY coolers as long as the coating is available
     
  9. HOT SAUCE

    HOT SAUCE

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    any ideas what coating that might be.. some sort of marine paints ???
     
  10. Express Reef

    Express Reef

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    Cathodic protection
    Cathodic protection can be gained in two ways. The most common is to mount an anode of a less noble material in direct metallic contact with the aluminium object to be protected. The less noble material “sacrifices” itself (i.e. corrodes) for the aluminium. It is thus referred to as a sacrificial anode.
    For the above to work, there also has to be liquid contact between the surface to be protected and the sacrificial anode.
    Zinc or magnesium anodes are often used for aluminium.
    Another way of obtaining cathodic protection is to connect the aluminium object to the negative pole of an exterior DC voltage source.
    http://www.aluminiumdesign.net/design-support/aluminiums-corrosion-resistance/
     
  11. Express Reef

    Express Reef

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  12. jimilutz

    jimilutz

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  13. Riaanvw

    Riaanvw

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    @G_PD

    Hi just a note about energy efficiency . Thermoelectric modules or Peltier devices as they are know in the electronics work is super reliable as coolers, but not very energy efficient. I would rather go for evaporation cooling (fan over water, make sure you have an auto top-up system) or a cooler that uses a compressor. If you only need the cooler once in a blue moon the Peltier might be ok, but in the long run you will be able to do better with the energy you pay Eskom for.
     
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