Thermoelectric Generator Samples

OOOH! Me too!

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Also please tell me of free products sample giveaways by companies producing high voltage equipment, diffusion pumps, lab glass, diode or gas lasers, centrifuges, ferroelectric material, flux compression pulse generators, turbine generators, fusors, and tractor beams.

oh, and good cheesecake too.

on a serious note... you cannot compare TEGs in VALUE and COST to high voltage equipment, diffusion pumps, lab glass, diode or gas lasers, centrifuges, ferroelectric material, flux compression pulse generators, turbine generators, fusors, and tractor beams.

I mean.. for Gods sake.. where did you get your degree.. i.e. if you have one

'...where did you get your degree...'

Free sample product giveaway from UF?

In which case, I would still be expected to choose words with which I am sufficiently familiar, i.e. I would only write 'i.e.' if I was aware that 'i.e.' [being the Latin abbreviation for 'Id Est' (~'that is'...'in other words')] is used to announce that what follows is a form of restating the preceding, in different sometimes more specific language.

....especially if i were, in the same sentence, calling someone's education into question.

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Doesn't really matter where you receive your degree, if it is hard to imagine you learned much worthwhile there...does it, Economist?

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'If the rule you followed brought you to this, of what use was the rule?'

very good.. it appears that I stand corrected..

From the looks of that storm, you may have to swim corrected.

'.....on a serious note... you cannot compare TEGs in VALUE and COST to.....'

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On a serious note, wherever you received your degree, especially as a self proclaimed Economist, you should be able to compare the VALUE of various purchasable items (so I'll let you slide on the tractor beam...although I see nothing prohibiting mounting a diode laser on a John Deere).

Any anyone with or without a degree should be able to compare the COST of the previously mentioned items...

....we were, after all, on the subject of giveaways.

FYI

http://www.ebay.com/itm/THERMOELECTRIC-POWER-GENERATOR-TEG-MODULE-NEW-USA-/310148993913

What sort of TEG? There's more than one kind. You're talking about a *complete* generator, yes? Samples are usually given away for free and are not returned. Superficially, your question is a bit startling. As worded, you could conceivably be asking for a free sample of a million-dollar piece of hardware. RTGs are 'thermoelectric generators' too, for example, and good bluddy luck finding the kg or so of *plutonium* to power it! In this light, TINAC's sarcasm is not entirely unwarranted, IMHO. Just sayin'

What the man was getting across is 'there is no free lunches' and when one evaluates any one item he should be able to afford to pay for his endevor. He could then give it to a chairity and recover the investment. When we evaluate above our mean our evaluation takes on the same interest. My suggestion would be to buy four and sell three to recoupe the cost.

The last free TEG sample I got is on its way to Pluto. Recoup that!

A friend who, is chief engineer of a large company, recently completed such an evaluation. He told me that his application requires clean generators because they are for a hermetically sealed application at very low pressure. Some generator manufacturers apparently don't bother to clean the flux and debris from the soldered generator assembly. Cleaning requires long times in an ultrasonic cleaner and can be a deal breaker when selecting a vendor.

If I manufactured and sold these you would have to convince me it is worth my money and effort to just give you one to compare to my competitors. I would do everything I could to convince you without just giving away my merchandise.

Why can't you just compare the data spec sheets like I did when I was selecting a thermoelectric cooler for a recent research project. There has been progress recently in making them better, but we are still a long way from replacing steam as a tool for generating electricity from heat. I know the Wikipedia cut and paste below is about cooling but the efficiencies are similar when converting electricity to heat / cooling as they are in generating.

Thermoelectric junctions are generally only around 5-10% as efficient as the ideal refrigerator (Carnot cycle), compared with 40-60% achieved by conventional compression cycle systems (reverse Rankine systems using compression/expansion). Due to the relatively low efficiency, thermoelectric cooling is generally only used in environments where the solid state nature (no moving parts, maintenance-free, compact size) outweighs pure efficiency.

If really want an evaluation completed convince Consumer Reports to do it.

Drew K

Well, I am very familiar with these devices. Their efficiency is limited to 5-10%, however, there are cases when they are more practical to use than you typical Rankine cycle. And this is when you have high quantities of low quality heat, as in most industrial process plants. a 5w TEG module operating at 5% eff. would require 100 watts of heat flowing through it.. Most commercial TEGs are similar in performance.,,. the real difference comes in the system design of the heat source and heat sink assembly.. As you saw from my link. 1 of these modules is actually pretty cheap.. And nobody will buy just 1 module unless it is exactly for what I would like to do, i.e evaluate them

My logic is that instead of buying 1 module from several different manufacturers.. i could convince them to give one to try and if it is good in performance. then but the 100-200 modules needed for my application..