Is anyone familiar with Peltier elements?

I want to with several Peltier elements build a kind of generator. However, I have not yet figured out the respective ideals interaction between the heating and cooling on the sides. Unfortunately, the efficiency is very low. (With candle and PC fans) 5 volts and a few mA I want to generate order to possibly charge a smartphone.

Is anyone familiar?

The best answer

In comparison to other thermal elements ( https://de.wikipedia.org/wiki/Thermoelement#Energiewandlung ) Peltiers have the worst efficiency (1/10 of the Carnot efficiency).

Guess that your device might reach 2%. That is at 5V and 10mA charging current (50mW power approx.) You have 50 times of thermal power out. Since you will not get along with a candle. And with the power of the PC fan verbrät ready several phones at the same load.

For the charge control of your smartphone you'll need you then buy or tinker a charging voltage. But it must be noted that these elements have been optimized for the active function of an untensioned heat pump. The temperature difference between the two sides is approx 60-70 degrees (and which must be continuously maintained). The solder itself absorb approximately to max. + 175-225 degrees. So you should first measure once that maximum voltage at which current falls at 60 degrees temperature difference between the two ceramic plates. Only then can you continue testing. But remember that a candle produces very little heat energy (joules) and also soot. And a soot layer is in turn a good thermal insulator. The heat generated is therefore likely to flow to your building upward past. The following proposal for a test setup: on each side of a sufficiently massive heatsink. Up Once cooled with an external power source via the fan, the lower radiator is in a 90 degree bain. Then you can determine the short-term occurring electrical values ​​(voltage / current) before. Note the operating voltage / current of the element at operating correctly according to the datasheet.

to be cooled side an old CPU cooler and fan, ev. extends the voltage before the part is there too hot to supply the fan. I just noticed that the fans something chase in coolers if you separate the box from power. The performance is higher, the higher the temperature difference tw. Both sides is

Date: 2018-07-12 Views: 0

Related articles

  • Heating bill fairly. Is anyone familiar with heat cost allocators? 2012-03-25

    Hello everyone :) My parents live in a house with Einliegewohnung. The Einliegewohnung to be rented. However, both apartments are heated by a common heating pellets. I would not like that my parents set a fixed sum for the heating costs. But I can no

  • Is anyone familiar with braids? 2012-06-01

    In my garden several trees and other woody plant with a (as I suspect) Lichen are infested. Is anyone familiar with it and can tell me what it is for an infestation? Can you do something about it because any? Solicit more information! Apparently the

  • Is anyone familiar with dogs? 2012-07-31

    Hello, My and not feeling well what it could be? He is very slack will hardly want to walk will not only eat are also or drink, breathe so funny and swallows as funny as he is difficult to Tut, do not want to play does not respond to his toys though

  • Is anyone familiar with labor law as drivers? 2012-10-30

    My husband is employed by a dispatcher. He writes always exactly on his hours. In the last settlement, he found that 20 hours have not been paid. Then he spoke to his boss and he said that, he went to the directions how long it goes. BUT: it must dis

  • Is anyone familiar with breeds? :( 2012-11-09

    Two days ago I got from my MutTee an 8 week old puppy. This is a hybrid. Is anyone familiar with breeds and can tell me roughly what may be for a race? ^^ --answer-- hmm me he recalls the appearance of Greek street dogs that also look like so many of

  • Is anyone familiar with the subject pilot? :) 2012-11-19

    In Germany it is quite hard to become a pilot. Since I have no desire to go on school, I'm doing an apprenticeship in one of the best Companyborn within an industrial mechanic. But how it looks in eg America trained as a pilot to do? Iactual it there

  • Is anyone familiar with drug-induced anxiety disorders? 2012-12-09

    Hello :) Has anyone ever had experience with anxiety disorders and can answer me the following question? Did you have to be crazy feeling? Did you think sometimes when you no longer take drugs do not listen to that? (Only getting a few minutes) How l

  • Anyone familiar with the DOS version Pac-Man, which are harvested by an BLITZ "life"? 2012-12-10

    Anyone familiar with the DOS version Pac-Man, which are harvested by an BLITZ "life"? So at the entrance, where the "spirits" after "blue" were, "form" new .... "If you drive over them, arise ever higher scores

  • Is anyone familiar with mini fishing rod? 2012-12-18

    Hello, I wanted to grow only a mini fishing rod. Unfortunately, I do not know whether the money is worth it. Is anyone familiar with it or would you recommend me to or even advise against it? Thank you for your answers. --answer-- Huhu, you look at t

Links

Domicile|Sante|

Copyright (C) 2019 m3tch.com, All Rights Reserved.

M3tch all rights reserved.

processed in 0.814 (s). 10 q(s)