Thermoeconomic and exergo environmental sustainability of a power-cooling organic Rankine cycle with ejector system

Abam, Fidelis I. and Okon, Bassey B. and Ekwe, Ekwe B. and Isaac, John and Effiom, Samuel O. and Ndukwu, Macmanus C and Inah, Oliver I and Ubi, Paschal A and Oyedepo, Sunday Olayinka and Ohunakin, O.S. (2022) Thermoeconomic and exergo environmental sustainability of a power-cooling organic Rankine cycle with ejector system. e-Prime - Advances in Electrical Engineering, Electronics and Energy.

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Abstract

The study presents a power-cooling organic Rankine cycle with an ejector system (ORCPCES). The objective is to determine the thermodynamic, economic and sustainability of the ORCPCES from the manufacturing, commissioning and decommissioning phases. Component-wise modelling was first performed based on the exergy concept. The system simulation was carried out using a developed source code in Engineering Equation Solver (EES). The refrigerant leakages and the material component impact on the environment were evaluated at all phases of the plant life cycle. The results indicate that the evaporator cooling rate (ECR) and the power-cooling efficiency (PCE) varied from 120.8 to 153 kW and 28.87 to 34.43 % across the refrigerants with the highest PCE and exergy efficiency obtained using R1234ze. The maximum power output was obtained using R1234ze. The overall environmental impact due to the components occurred at, and for R245fa, R1234yf, and R1234ze, respectively, while and was due to the working fluids in that order. The unit cost of electricity (UCOE) across the refrigerants varies from 0.181$/kWh to 0.2291$/kWh with the least UCOE, 0.181$/kWh obtained using R1234ze. The highest exergetic sustainability index of 0.56 was achieved using R1234ze.

Item Type:	Article
Uncontrolled Keywords:	Exergo environmental Turbine Refrigerants Energy Life-cycle
Subjects:	T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	AKINWUMI
Date Deposited:	15 Nov 2022 15:22
Last Modified:	15 Nov 2022 15:22
URI:	http://eprints.covenantuniversity.edu.ng/id/eprint/16450

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