Quote:
Originally Posted by oil pan 4
Any idea how long thy last?
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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).