Peltier thermoelectric device efficiency

The first part of this video went MIA, sorry.
Anyway, this is an experiment I did after learning a few bits and pieces of thermodynamics in my college studies. I was curious if using peltier devices would be an effective means of heating my house. If you don't know, using electric resistive heaters is one the most inefficient way to heat your house. The heat pumps advertisers try to get home owners to buy so that they can save money on the electric/gas bill are on to something. Heat pumps are several times more efficient at heating your house than just a hot wire.
Its true.... Its a fundamental principal of thermodynamics which I will not get into (look at wikipedia).
I measured the performance of a peltier device to heat up water.
The results are surprising.

Thanks for watching and leave feed back about anything. And try to be civil because I will delete annoying posts.

Category:

Science & Technology

Tags:

• peltier
• thermoelectric
• device
• cooler
• heater
• efficiency
• amps
• watts
• 80
• 300
• water
• drink
• clark
• college

[josephdupont]

as a generator, what is highest temp these units will withstand???

[HellTriX]

@josephdupont The specs are listed on peltiers. Typical temps though range to as high as 180-200C roughly.

[ryukenosuke]

Great vid. I've been looking into experimenting with Peltier devices for a while, and have just re-vamped my motivation to do so. Would you happen to have a chart depicting the stand alone temperature differences between the two sides of a peltier device using the variable of amps?

[HellTriX]

@ryukenosuke I do not have a chart like this, but I can make a prediction. My prediction is that anything above and amp or two, you will have a temperature difference of around 70 degrees Celsius and as you raise current the temperature difference will not change very much at all, maybe 10C at most. This is because the peltier has a absolute limit as to temperature differential between both sides, so without heat sinks it will quickly reach that differential limitation.

[hermin]

hi, is the current in milliamps, or amps?

[HellTriX]

Amps

[scfitch]

do these units increase output with increased surface area?

[josephdupont]

Well Thank you for answer my question as to heating water using the peltier effect.

one would think that you could use heat pipes below your home

and then draw heat out att 55 and heat your house with not mechanical parts.

The other idea is to mount a hot water preheaster on top of a fridge and cool 'and heat at the same time.

you should put it over a thermos... and cool soda while preheating water

the nice thing about pre heating water that the btu you save is benificial

[FindandSeeker]

HellTriX, very informative, thanks. bobo888bobo, the 5 and 2.6 figures are useful, too.

[ryukenosuke]

Thanks for the reply and info.