How to cool a NANO tank ? Thread #2

bezz · 15th Dec 2005, 07:04 AM

Look what I found. Bought a few of these to play around with

bezz · 15th Dec 2005, 07:05 AM

Cost $35 each

**NanoDave** · 15th Dec 2005, 07:34 AM

Nice find!

where did you get it from?

**spinex** · 15th Dec 2005, 09:43 AM

Bezz,

Look very interesting. But it's a bit underpowered from what i see from the manual. 6v, 1.5A. Power is 9W .. our peltier normally already running at 30-50w range.

Of course nothing beat a practical experiment on it. Maybe you can test by fill it with water and see how fast the cooling work on that small amount of water 1st.

I wonder if we could dismantle the thing and see what peltier they using so we could replace it with a more powerful one

**tsia** · 15th Dec 2005, 10:30 AM

How much did u pay for the can cooler and where you got it from ? ;-)

**ianlim** · 15th Dec 2005, 11:16 AM

maybe just buy 2 or 3 of the can cooler and then loop them together in series, wonder whether it will works?

**spinex** · 15th Dec 2005, 12:03 PM

Originally Posted by ianlim

maybe just buy 2 or 3 of the can cooler and then loop them together in series, wonder whether it will works?

Each cost $35 according to Bezz .. buying 3 = 3 x $35 = sgd$105.

Doesn't make economical sense

in term of cooling rate and $$$ spend.

**silane** · 15th Dec 2005, 12:13 PM

Originally Posted by spinex

Each cost $35 according to Bezz .. buying 3 = 3 x $35 = sgd$105.

Doesn't make economical sense

in term of cooling rate and $$$ spend.

The rating of that TEM is too low, notice that it is good to cool a can of drink. Understand from someone who used another winer chiller which is specified to cool 4.5l of water, the result was also bad.

Best is to use direct cooling rather than passing through reservior as there is too much loss. I can get 22C with cold fine directly coupled into the tank.

**spinex** · 15th Dec 2005, 12:15 PM

Thermal conductivity of common metal from Wikipedia

http://en.wikipedia.org/wiki/Thermal_conductivity

Thermal conductivity of other common materials:

Diamond 895-2300
Carbon Nanotubes 1400
Silver 429
Copper 386
Gold 317
Aluminium 237
Brass 120
Platinum 71.6
Iron 80.2
Lead 35.3
Mercury 8.514
Quartz (273K) 6.8-12
Ice (273K) 2.2
Glass 1.35
Wood 0.04 (balsa) - 0.35 (fir)
Styrofoam 0.033
Wool 0.04
Silica aerogel 0.017
Air (100 kPa) 0.0262
Water 0.6062

**xtrekker** · 15th Dec 2005, 02:58 PM

Originally Posted by gr81

what type of Peltier do you have? How can PSU burn out if no max A is reached?

I am using a 350W TEC , Vmax @ 15V and Imax @30A.

Apparently , the cheapo ATX PSU comes only with one fan and its connected to 5V. This cause the switching transistors to overheat and its operating over Tmax.

cheers