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Energy-exergy efficiencies analyses of a waste-to-power generation system combined with an ammonia-water dilution Rankine cycle
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DOI：10.1016/j.csite.2021.100909.png)
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Abstract
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This research investigates a waste-to-energy system combined with an ammonia dilution Rankine cycle. It uses cooling-energy recycling of dissolved natural-gas to reduce the working-fluid temperature. This project includes providing a solution for calculating the calorific value of waste by proposing a novel waste incineration power generation combined cycle. The energy-exergy analyses is utilized to study the effects of critical parameters on the efficiency and determines the points with higher efficiencies than the conventional steam Rankine cycle. Engineering Equation Solver (EES) software is used for delivering such accurate outlines. The ammonia dilution distillation temperature and the turbine's inlet and outlet pressures are considered vital parameters. The results revealed that mutually energy and exergy efficiencies rise as the ammonia solution's distillation temperature decreases. Besides, by increasing the inlet turbine pressure, the energy and exergy efficiencies increase. In addition, as the output pressure of the turbine increases, the combined cycle?s energy efficiency decreases while the exergy efficiency increases.
Keywords:
Energy-exergy analyses
Calorific value
Rankine cycle
Waste incinerator
Exergy efficiency
Energy efficiency
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