ABSTRACT
Thermodynamic and thermoeconomic
evaluation of a novel organic Rankine cycle for combined cooling and power
generation was carried out. Mathematical modelling and simulation of the
combined system under steady-state conditions to obtain the combined
efficiency, using organic refrigerants were employed in this research.
Performance of the exergy destruction analysis to display the exergy
destruction distribution in the system qualitatively as well as the performance
of thermodynamic sensitivity analysis to determine the effect of critical
operating variables on the system was undertaken, furthermore, the
thermoeconomic analysis was incorporated using exergy costing methods for the
system. 1 he performance analysis of the system under steady state conditions
was evaluated using a developed program in consonance with all models stated in
this work. For preliminary data analysis, three refrigerants (R245fa, R1234yf,
and R1234zc)wcrc used. All operating thermodynamic properties such as
temperature, pressure and mass flow rate are considered to reflect nearly
optimum conditions in the system. The cycle configuration without cooling is
similar with an ORC system with an internal heat exchanger based on existing
study, where efficiencies were reported to be about 37%. With the addition of
cooling as a product, exergetic efficiency increased by 24.08% for R245fa,
39.33% for R1234yf and 27.40% forR1234ze.The exergetic sustainability index
which relates the net exergy destruction and Net Turbine Output (NTO) is also
indicative of the choice of refrigerants for the system. In all considered
cases, the results showed that Turbine Inlet Temperature (TIT) values which are
reasonably higher than any working fluid critical temperatures results in large
exergy destruction and reduced exergetic efficiency
CHINONSO, G (2025). Thermodynamic and Thermoeconomic Evaluation of a Novel Organic Rankine Cycle for Combined Cooling and Power Generation:- Kanu, Chinonso G . Repository.mouau.edu.ng: Retrieved May 20, 2025, from https://repository.mouau.edu.ng/work/view/thermodynamic-and-thermoeconomic-evaluation-of-a-novel-organic-rankine-cycle-for-combined-cooling-and-power-generation-kanu-chinonso-g-7-2
GODSWILL, CHINONSO. "Thermodynamic and Thermoeconomic Evaluation of a Novel Organic Rankine Cycle for Combined Cooling and Power Generation:- Kanu, Chinonso G " Repository.mouau.edu.ng. Repository.mouau.edu.ng, 19 May. 2025, https://repository.mouau.edu.ng/work/view/thermodynamic-and-thermoeconomic-evaluation-of-a-novel-organic-rankine-cycle-for-combined-cooling-and-power-generation-kanu-chinonso-g-7-2. Accessed 20 May. 2025.
GODSWILL, CHINONSO. "Thermodynamic and Thermoeconomic Evaluation of a Novel Organic Rankine Cycle for Combined Cooling and Power Generation:- Kanu, Chinonso G ". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 19 May. 2025. Web. 20 May. 2025. < https://repository.mouau.edu.ng/work/view/thermodynamic-and-thermoeconomic-evaluation-of-a-novel-organic-rankine-cycle-for-combined-cooling-and-power-generation-kanu-chinonso-g-7-2 >.
GODSWILL, CHINONSO. "Thermodynamic and Thermoeconomic Evaluation of a Novel Organic Rankine Cycle for Combined Cooling and Power Generation:- Kanu, Chinonso G " Repository.mouau.edu.ng (2025). Accessed 20 May. 2025. https://repository.mouau.edu.ng/work/view/thermodynamic-and-thermoeconomic-evaluation-of-a-novel-organic-rankine-cycle-for-combined-cooling-and-power-generation-kanu-chinonso-g-7-2