The Cryo-Thermal Closed Cycle Diesel Engine. Detailed Analysis of Stationary Working Conditions

The "cryothermal engine" is a closed cycle Diesel system in which exhaust gases are cooled and part of them compressed so that CO2 is condensed, separated and stored at low temperature, thanks to heat exchange with stored liquid oxygen. This generates a cooling effect while is evaporated and superheated to feed the inlet mixtures of the engine. The system, petented in a number of countries, was presented in a previous paper where the main differences and advantages were shown with respect to other energy system for Autonomous Underwater Vehicles (AUV). Basic thermodynamics and performances of the plant were presented and discussed, highlighting the high degree of system's non linearity.