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We know that compressing air produces heat but is it possible to achieve temprature of 700degree C just by compressing air. If not what will be the maximum temprature that could be achieved?

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  • $\begingroup$ What compression ratio could you achieve? $\endgroup$ – Solar Mike Oct 22 '20 at 17:55
  • $\begingroup$ How well insulated is your system? $\endgroup$ – Jonathan R Swift Oct 22 '20 at 18:08
  • $\begingroup$ "compressing air produces heat" is not a correct thing to say. $\endgroup$ – Algo Oct 23 '20 at 3:27
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    $\begingroup$ Sure, start with 699 degree air and compress it a little. $\endgroup$ – Phil Sweet Oct 23 '20 at 19:24
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There is no "maximum," short of creating plasma. The temperature obtained will be a function of compression ratio and insulation. Other than that it is a simple T-P ratio (use kelvin or Rankine units).

Whether you can build a 400:1 compression ratio compressor is quite a different question.

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There is no set temperature that is the default maximum threshold obtainable via pneumatic compression as @Tiger Guy and @Transistor said. You could, however, think of a compressed air tank much like a bomb calorimeter, in that the air stored inside it represents the system, and the outside room/atmosphere the surroundings. The system in this case generates very little measurable heat that is not absorbed immediately by the metal tank and the surroundings.

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