Σχεδιασμός υπερκρίσιμων κύκλων Rankine με CO2 για εκμετάλλευση απορρίπτομενης θερμικής ενέργειας από κύρια μηχανή ντίζελ πλοίου μεταφοράς εμπορευματοκιβωτίων - Επιλογή βέλτιστου κύκλου μέσω τεχνο-οικονομικής βελτιστοποίησης με γενετικό αλγόριθμο και εξεργο-οικονομική και εξεργο-περιβαλλοντική ανάλυση του
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SupercriticalAbstract
A thermodynamic analysis of a Simple Supercritical, a Split Supercritical and a Cascade Supercritical CO2 cycle is conducted through the engineering software EES, which will be coupled with the 2-stroke engine of a 6.800 TEU containership. A heat transfer analysis is also conducted, in order to dimension the appropriate heat exchangers of these systems. Moreover, an economic analysis is carried out so as to calculate the total capital cost of these installations. The functional parameters of these cycles are optimized, in order to minimize the Electricity Production Cost (EPC), using genetic algorithm. The produced results from these analyses are compared and the cycle with the lowest EPC is utilized for further analysis. For the selected cycle a parametric analysis is carried out in order to illustrate the variation of the bsfc improvement, the generated power and the efficiency of the system in different engine loads. Finally, an exergoeconomic and an exergoenvironmental analysis is conducted with the intention to calculating the cost of the exergetic streams and various exergoenvironmental indicators.