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Thread: Peltier wine cooler
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08-12-2005, 11:18 PM #1
Peltier wine cooler
Got called to have a look at a small wine cooler today in a Hotel in Canterbury that wasn't doing it's stuff. At the rear it had what I thought was a convection-type condenser exactly as you'd get on a domestic but where was the bloody compressor? O.K., it must be an absorbtion sytem & the heater element's probably gone tits up thought I. I took off a large plastic panel at the rear & was confronted with a P.C.B. measuring approx. 30cm by 10cm. with small-gauge wires dissapearing into the blown foam insulation. There was a tiny circulating fan inside but not much else as it appeared to be a sealed unit. As far as I could work out it was a Peltier heat pump as used on those little portable fridges you can buy to plug into the cigarette lighter socket in the car. I remember that they can generally only cool to about 10 degs. below ambient at best so I wasn't expecting much. I replaced a miniature fuse that'd blown on the board & bugger me, it pulled down to 3 deg. C in the space of 10 minutes. I assumed that the 'condenser' is actually full of some sort of fluid & takes the heat away from the hot end of the Peltier unit by way of the syphon effect that was used on the engine cooling systems on cars before they started fitting waterpumps to circulate the water? Anybody else come across one of these?
chill out it's only a fridge
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09-12-2005, 08:25 PM #2
Re: Peltier wine cooler
Haven't come across these but what caused the fuse to blow?
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09-12-2005, 10:19 PM #3
Re: Peltier wine cooler
Hi shanes696
check this out http://www.te-design.com/
Chemi
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10-12-2005, 12:42 PM #4
Re: Peltier wine cooler
Originally Posted by frankchill out it's only a fridge
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10-12-2005, 12:45 PM #5
Re: Peltier wine cooler
Originally Posted by chemi-coolchill out it's only a fridge
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14-12-2005, 09:40 PM #6
Re: Peltier wine cooler
It's probably a combination of TECs and heat pipes, like what's used in some car A/Cs. Apply power to a TEC and the hot side gets hot and the cold side gets cold very quickly. While compressors use AC, TECs use DC. Therefore, TECs are very common in cars but uncommon in AC powered equipment. Some additional benefits include lower cost (particularly for DC powered devices) and silent operation. I actually have a LG refrigerator that uses TECs. When I first installed it, I thought that it was broken because I didn't hear it start! It dimmed the lights for a second, so I just waited and it got cold, so it works.
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