Abstract
The content of municipal solid waste generation is increasing due to the industrial and population growth. Energy generation from municipal solid waste is one of the efficient and promising method to dispose waste in a sustainable manner, while reducing the fossil fuel energy limitations. However, conventional waste-to-energy plants have less thermal efficiency due to the higher moisture content that lowers its heating value. The solar thermal integration is one of the proposed solutions to enhance the steam inlet temperature in the power generation system that will further increase the plant performance. In this study, an innovative solar integrated municipal solid waste incineration plant is proposed to advance the waste-to-energy and concentrated solar power thermal energy technologies. The system integration is carried out utilizing the useful solar heat harvested in the heliostat tower receiver system by transferring heat to the working steam of the incineration plant in the heat exchanger and enhance the turbine inlet temperature and the system’s performance considerably. Based on 300 t/d incineration facility, proposed system is investigated exergo-economically by varying certain influential parameters using engineering equation solver and performance has been compared with the conventional reference plant. The system is integrated with high-temperature Phase Change Materials, which able to store thermal energy enough for the light-time system operation. The results attribute that the network output of the proposed integrated facility has substantial improved (almost 12.61 %) but with the penalty of increase in the exergy destruction cost rate. In addition, levelized cost of electricity of the proposed plant is 13.9 % less than the conventional one and it decreases with the rise of steam temperature. Energy efficiency of the proposed plant improves to approximately 36.34 % as direct normal irradiation increases from 650 W/m2 to 900 W/m2. In addition, Incineration boiler is the major source of exergy destruction (almost 50 %) with 175.2 $/hr exergy destruction cost.
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