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Originally Posted by afterburn 549
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The thermodynamics don't sound very good. On a Gas Turbine, you compress the air, add fuel to heat it, then expand it over the turbine. One way to reduce fuel consumption is to preheat the compressed air with exhaust heat exchangers before adding fuel. This is called "regeneration".
The problem with the above article is the heating is taking place BEFORE compression. This will further increase the temp and the compression energy in the cylinder. Most times to increase power, you want to cool the air before it enters the engine. Intercoolers are used on multistage compressors to reduce temperature and compression energy in downstream stages. It is a loser for fuel efficiency, but a winner for power.