0
\$\begingroup\$

Let's say I placed a peltier on the stove, at what temperature will the device fail? Would a temporary failure happen, if so what temperature and is there a permanent failure temperature, whereas the device is permanently destroyed.

\$\endgroup\$
  • \$\begingroup\$ Welcome to EE.SE! What does the datasheet say? What does your google search results reveal in the matter? \$\endgroup\$ – winny Mar 5 at 17:53
2
\$\begingroup\$

Would a temporary failure happen, if so what temperature and

From the FAQ at the TE Technology website:


The maximum ambient temperature will depend on the desired reliability, the heat sink, how much heat is being dissipated, and the temperature rating for the module or other system components (such as fans and insulating materials). Typically the maximum ambient temperature is limited to approximately 50 °C for standard coolers that use fan-cooled heat sinks. Coolers that use high-temperature modules are able to operate at higher ambient temperatures though. However, most commercially available fans have a maximum operating temperature of -10 °C to +70 °C. Be sure to consult with us to verify whether operating in higher ambient temperatures is possible.

is there a permanent failure temperature, whereas the device is permanently destroyed.

Typically if you heat it up too much, the solder joining the p- and n-type semiconductor elements together will fail. Often the solder used has a relatively low melting point, so the limit temperature is lower than the 188 C you would expect if ordinary tin-lead solder were used.

\$\endgroup\$
  • \$\begingroup\$ So using it to recover waste heat from a car exhaust would probably not be practical. \$\endgroup\$ – Joe Fala Mar 5 at 18:08
  • \$\begingroup\$ @JoeFala, You could probably find a specialty device that can do it without damage (TE Tech has devices rated for 200 C). But the amount of energy recovered would be small and the cost of the part high, so it's likely not economically viable (but then all progress in engineering comes from somebody trying something that most people thought was never going to work). \$\endgroup\$ – The Photon Mar 5 at 18:16
  • \$\begingroup\$ I'm no stranger to experimenting. I may give it a try perhaps with an insulator in between the exhaust and Peltier device to keep the temperature down a bit. \$\endgroup\$ – Joe Fala Mar 5 at 18:18

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.