Article 2025 · 2 citations

Energy, exergy and economic optimization application of integrated dual-loop organic rankine cycle: A case of shopping mall power plant

Topcu, Muhammed Taha, Tozlu, Alperen, Bilen, Kadir

Abstract

This paper presents a thermoeconomic analysis of the Dual-Loop Organic Rankine Cycle (DORC) integrated into the Erzurum Mall Power Plant (EMPP). The DORC system is designed to utilize waste heat at 425 degrees C and 9 kg/s, producing additional power for the existing plant. The integration of dual-loop ORC systems with different critical temperature fluids into an operational facility is analyzed. High-temperature cycles use working fluids such as Toluene, MDM (octamethylcyclotrisiloxane), n-Nonane, and n-Octane, while refrigerants R236fa, R600a, and R124 are employed in the low-temperature cycles. The designed model demonstrates that up to 11.4 % of the plant's existing capacity can be added as extra power. The Toluene/R600a combination is identified as the best fluid pair, delivering the highest total net power output (653.4 kW), the lowest total cost rate (19.18 $/h), and the highest exergy efficiency (20.18 %). Optimization of the DORC system is performed using the NSGA-II in MATLAB. For the toluene/R600a pair, the optimization results show an increase of 13.52 % in the net power output and decrease of 1.48 % in the total cost rate, which is a significant improvement over the initial results.

Keywords

Waste heat recovery Working fluid pairs Thermoeconomics Dual-loop organic rank & imath;ne cycle Genetic algorithm Optimization WASTE HEAT-RECOVERY WORKING FLUID ANALYSIS ORC SYSTEM MULTIOBJECTIVE OPTIMIZATION DIESEL-ENGINE PERFORMANCE ANALYSIS PARAMETRIC ANALYSIS SELECTION GT

WoS Categories

Thermodynamics

Sustainable Development Goals

Affordable and Clean Energy

Citation

Journal: CASE STUDIES IN THERMAL ENGINEERING
Year: 2025
Volume: 74
ISSN: 2214-157X
DOI: 10.1016/j.csite.2025.106762
WoS UID: WOS:001550882600002

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