An Exergoeconomic Evaluation of an Innovative Polygeneration System Using a Solar-Driven Rankine Cycle Integrated with the Al-Qayyara Gas Turbine Power Plant and the Absorption Refrigeration Cycle

Abstract

This study aims to develop, evaluate, and improve a polygeneration system that combines solar and Brayton cycle technologies and focuses on the sequential integration of heat. In this configuration, the exhaust gases from the Al-Qayyarah gas turbine power plant and the parabolic trough collector (PTC) array generate steam through a high recovery steam generation process. An absorption refrigeration system also supplies the Brayton circuit with low-temperature air. This process is evaluated from a 3E perspective, which includes exergy, energy, and exergoeconomic analyses for two different configurations. These configurations are integrated solar combined cycle (ISCC) with and without absorption systems (ISCC and ISCC-ARC). In addition, a comprehensive analysis was carried out to assess the impact of critical factors on the output generated, the unit cost of the products, and the exergy and energy efficiency for each configuration. The results revealed that the power produced by the ISCC-ARC and ISCC systems is 580.6 MW and 547.4 MW, respectively. Accordingly, the total energy and exergy efficiencies for the ISCC-ARC are 51.15% and 49.4%, respectively, while for the ISCC system, they are 50.89% and 49.14%, respectively. According to the results, the total specific costs for the ISCC-ARC system increased from 69.09 $/MWh in June to 79.05 $/MWh in December. ISCC’s total specific costs also fluctuate throughout the year, from 72.56 $/MWh in June to 78.73 $/MWh in December.

Enhancing Diesel Engine Performance with Different Concentrations of Copper Oxide Nanoparticles in Biodiesel Blends

“…Efforts to find cleaner and more efficient fuels for diesel engines have prompted the investigation of different additives and mixtures. Biodiesel generated from sunflower oil has become an attractive alternative since it is sustainable and can reduce greenhouse gas emissions significantly [1,2]. Researchers are using nanotechnology, namely copper oxide nanoparticles, to improve the efficiency of biodiesel mixes [3,4].…”

Techno-Economic and Environmental Impact Analysis of a 50 MW Solar-Powered Rankine Cycle System

“…Adibhatla and Kaushik [31] found that integrating solar energy into a natural gas CCPP using DSG and PTCs increased output by 7.84%, improved efficiencies to 53.79% and 27.39%, and reduced electricity costs from 0.074 to 0.067 USD/kWh. Talal et al [32,33] discussed the advantages of integrating solar thermal energy with gas turbines in Iraq, highlighting the economic and efficiency gains over traditional systems and advocating for adopting integrated solar combined cycle (ISCC) plants to improve Iraq's energy infrastructure. Dabwan and Pei [34] assessed traditional and solar-integrated gas turbine trigeneration plants, finding that a configuration combining a 126-hectare solar field with a 130 MWe plant cut CO 2 emissions by 114 kilotonnes and set energy prices at 5.75 USD/kWh.…”