Optimizing Energy Recovery from Marine Diesel Engines: A Thermodynamic Investigation of Supercritical Carbon Dioxide Cycles

Abstract

Highlights• In this study, four heating recovery cycles of carbon dioxide were processed with EES. • Modeling four critical recovery heat generator cycles for carbon dioxide • Analysis and comparison of effective parameters of the heat recovery cycle • The exhaust recovery with a regenerative converter yields an output power of 228.3 kW. • The highest turbine output power (611.5 kW) exhaust recovery cycle with two converters NOMENCLATURE BR v 𝑇 𝑜𝑢𝑡 Temperature outlet ṁc Mass flow T in Temperature inlet h s Sritical isentropic enthalpy W net Net power output 𝜂 Efficiency Greek Symbols 𝑄 Heat transfered ξ Efficiency of heat exchangers C p Specific heat capacity constant pressure