Talk:Siemens cycle

> Heated - by compressing the gas

really ? heat is a energy exchanged during two states of a system in contact with a temperature bath that is different to the temperature of the system it is possible to compress a gaz in an adiabatic way, without heat exchanged, and the temperature of the gaz rises...

temperature is different to heat transfer... -- stéphane — Preceding unsigned comment added by 134.214.140.112 (talk) 09:02, 10 March 2015 (UTC)