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Old 11-06-2018, 03:30 PM   #21 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Let's say this is for a liquid cooled stationary backup generator and size, weight aren't really a problem.

Any idea how long thy last?
Cost?

Also How do you get the 300c necessary to fire these up at full power?

Exhaust?

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Old 11-06-2018, 03:41 PM   #22 (permalink)
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I would be using it at full power.
Probably heat it with liquid coolant.
If I use 300C the wires insulation would melt.
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Old 11-06-2018, 06:24 PM   #23 (permalink)
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Quote:
Originally Posted by oil pan 4 View Post
Any idea how long thy last?
From what I've read .. baring some type of mechanical failure .. the semi-conductor part itself of most TEGs .. Roughly the same rate of degradation as most solar cell semi-conductor degradation .. about ~0.5% to ~1% per year (+/- context and material specifics).

Mechanical failure can result from allot of sources .. vibration , temperature changing cycles of expansion/contraction , sheer , impact , etc.

Soo , in ~20 years of use , it would be roughly 'fair' to assume you will drop down / loose somewhere around ~15% reduced power output (all else being equal).
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Old 11-07-2018, 03:16 AM   #24 (permalink)
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I get the over 300c to fire up our TEG thermalelectric boiler by burning wood pellets, then through a grid tie inverter we put the energy from the wood pellets into our Nissan LEAF to the tune of 2 free round trips to town per day. Meanwhile the heat produced makes hot showers and goes I to our home hydronic heating loop.
Total system efficiency is near 100%
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Old 11-07-2018, 01:33 PM   #25 (permalink)
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Do you have a picture of your setup?
How many modules?
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Old 11-09-2018, 06:25 AM   #26 (permalink)
100 mpg 1 tonne truck
 
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105 40x40 mm TEG modules in this boiler from hastyheat.com
https://youtu.be/oTijbSC8y6A
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How to get a 100 mpg 1 tone crew cab truck for under $10,000; buy a nissan leaf!
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Old 11-09-2018, 07:28 AM   #27 (permalink)
100 mpg 1 tonne truck
 
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Z - '77 Datsun 280Z 2+2 custom
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KLR - '09 Kowasaki KLR 650 Dual Sport
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The Juggernaught - '65 Gillig 35' motor coach
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hummingbird - '81 Volkswagen rabbit vx
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HD Ruby - '12 nissan leaf sl
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Interesting video series on burning a TEG up by overspec thermal loading...
Synopsis if you have a good cooler you won't melt the solder out, so pour the heat to them...
https://youtu.be/Ya40vwpTCf4
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Old 11-09-2018, 01:30 PM   #28 (permalink)
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So you have to have a solid cooling system.

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