Peltier cooler

Just checked the power supply (Colman peltier cooler power supply). It's output is 5 amps at 12 volts. I have no idea if the peltier cooler can use all the current or perhaps more current. Thanks Karl

Make me think wine cooler: less overall trouble and less cooling problem. She's using an ice pack or two a day right now. She's looking for constant temp within reason. I think salamanders are boring too, except if fire salamanders actually breathed fire.

Thanks Karl

It came with two 5"x5" heatsinks mounted on it. I mounted the fan on the cool side but it looks like it should have been the hot side. If I continue this I'll let everyone know how it comes out. Thanks Karl

I new there was a lot of heat loss through the glass but I didn't have any idea how much. I'll keep these two ideas in mind. I'm going to remount the fan on the hot side and see what happens. I wonder if I could eventually mount the cold side to the glass bottom of the tank and get enough heat transfer. The tank needs high humidity. Thanks Karl

That might work. You might want an aluminum spreader plate, maybe 6" square and 1/4" thick, insulated from ambient air, with some heatsink grease between the plate and the glass. The gradient in the bottom glass would then be about 0.25 degF/watt. Might want some insulation on the lower parts of the sides.

I wonder if you'd get a little fogbank or cloud near the bottom!

The Peltier I have may have been surplus from Coleman. It's a 1.56" square white ceramic thing about .140" thick, with a red wire and a black wire affixed. If yours sounds similar, I have a somewhat blurry but readable specsheet. It is 12 volts at 5 amps at some temperatures.

Wal-mart and Target often have little fridges for under $50 ($30 if on sale) in the Camping or Automotive sections.

The inside of the outer wall of the double wall box is the hot side. The outside of inner wall is the cold side. Between the two walls is foam and in one spot the cooler. The outside will radiate to the world easily enough the heat given off by the bottles and passed through the only leakage path - that of the Peltier cooler.

Martin

This one seems to be around 3" square by 1" tall. It's rapped in foam. Red and Black wire sticking out of it. Karl

Many of these may be peltier based.

I'd doubt the 1" thickness as Peltier modules are a lot thinner than that normally. Even the xy directions are a bit dubious as the largest normally are in the inch and a half size. You may have some axuilary parts put onto the module to help get the heat moved about. You get to pump about 180BTU of heat with a single module for the most part and anything as big as you are discussing should be able to handle about 4 times that if the size of the actual device is that big.

-- Why isn't there an Ozone Hole at the NORTH Pole?

A lot are 40mm x 40mm x 5mm (roughly) thick.

Best regards, Spehro Pefhany

The thickness is approximately 1 inch between the faces of the heatsinks. I haven't tried pulling it apart yet as my friend is trying to get specs on it. I'll post whatever info I get. Thanks Karl