<
https://theconversation.com/machines-cant-always-take-the-heat-two-engineers-explain-the-physics-behind-how-heat-waves-threaten-everything-from-cars-to-computers-210591>
"Not only people need to stay cool, especially in a summer of record-breaking
heat waves. Many machines, including cellphones, data centers, cars and
airplanes, become less efficient and degrade more quickly in extreme heat.
Machines generate their own heat, too, which can make hot temperatures around
them even hotter.
We are engineering researchers who study how machines manage heat and ways to
effectively recover and reuse heat that is otherwise wasted. There are several
ways extreme heat affects machines.
No machine is perfectly efficient – all machines face some internal friction
during operation. This friction causes machines to dissipate some heat, so the
hotter it is outside, the hotter the machine will be.
Cellphones and similar devices with lithium ion batteries stop working as well
when operating in climates above 95 degrees Farenheit (35 degrees Celsius) –
this is to avoid overheating and increased stress on the electronics.
Cooling designs that use innovative phase-changing fluids can help keep
machines cool, but in most cases heat is still ultimately dissipated into the
air. So, the hotter the air, the harder it is to keep a machine cool enough to
function efficiently.
Plus, the closer together machines are, the more dissipated heat there will be
in the surrounding area."
Via Kenny Chaffin.
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
