Energy conversion arrangement, energy system and aircraft comprising same

An energy conversion arrangement for an aircraft, comprising:

• a fuel conversion device configured to convert at least one fuel to electrical energy, mechanical energy or both electrical energy and mechanical energy;
• an expansion device arranged in a flow path of exhausts produced in the fuel conversion device and configured to decompress the exhausts;
• a first exhaust outlet configured to let out the exhausts produced in the fuel conversion device by a conversion of fuel;
• and
• at least one bypass duct configured to allow the exhausts to bypass the expansion device as the exhausts flow from the fuel conversion device to the first exhaust outlet,
• wherein the bypass duct connects to at least one mixing assembly which is configured to mix the exhausts with further exhausts from the energy conversion arrangement and is arranged in the flow path of the exhausts, wherein the further exhausts are directed out of a second exhaust outlet and the mixing assembly comprises the first exhaust outlet and the second exhaust outlet, and wherein mixing of the mixing assembly takes place downstream of a location on the aircraft where the exhausts exit the aircraft,
• wherein the further exhausts exit a thermal management system and have a higher temperature or less relative humidity than the exhausts.