Re: Homemade Thermopile

On a sunny day (Mon, 03 Dec 2007 11:26:55 +1100) it happened Clifford Heath
<no@xxxxxxxxxxxxxxx> wrote in <47534d4f$0$3097$afc38c87@xxxxxxxxxxxxxxxxxxxx>:

John Popelish wrote:
I wonder how their efficiency and voltage output compare to a modern
Peltier cooler operated as a generator.

A friend of mine ran a primary school team that entered a model boat
contest with a 60W Peltier device that had ice one side, boiling
water or candle heat (I forget) the other, and drove an electric
motor. They won the contest hands-down, ten seconds to cover 10m.
Might not have been efficient, but it generated good power for a
short period.

OK I have a 'Zibro' air dehumifier.
It has a peltier in it, and runs one some separate swicthmode that outputs
13.6V 5A DC.
Been running for days..
I disconnected the DC plug from the switchmode,
measured the open voltage on t connector from the Peltier : 1.2V
measured the short circuit current (amp meter ) .45A

Not bad!!!!!!!!!!
Because it is handwarm on the hot side, and about 1 C or so at the cold side,
not even freezing, just cold enough to create condensation.

Indeed I think that if yo uuse ice and a falme it can run a small electric motor.
Now how's that for quick test :-)
.

Relevant Pages

  • Re: Homemade Thermopile
    ... Peltier cooler operated as a generator. ... Because it is handwarm on the hot side, and about 1 C or so at the cold side, ... Indeed I think that if yo uuse ice and a falme it can run a small electric motor. ...
    (sci.electronics.design)
  • Re: Looking for info
    ... How about doing it in a freezer so it heats up to 40degF? ... Running current through something only increases the energy coming out of ... Peltier modules give you one cold side and one side that's warmer ...
    (sci.chem)