2023ICERD8-C16 -- Off-Design Operation of Super Critical CO2 Cycle Integrated with Reciprocating Engine PDF

This paper presents the results of simulations of a supercritical CO₂ system integrated with a 180-kW nominal power piston engine. The supercritical CO₂ system is based on a micro gas turbine and operates in a Brayton system (without a condenser). The results of the calculations were referred to the nominal point of the system and are given as maps of parameter changes normalized to the nominal point. The supercritical CO₂ system itself is not controlled (only the speed of the turbomachinery is kept constant), while the power of this system depends on the current state of the reciprocating engine and directly influences the amount and temperature of the exhaust gases fed to the heater.