Dynamic Simulation and Thermoeconomic Analysis of a Novel Hybrid Solar System for Biomethane Production by the Organic Fraction of Municipal Wastes

The anaerobic digestion of the organic fraction municipal solid waste and biogas production obtained from its stabilization are becoming an increasingly attractive solution, due to their beneficial effects on environment. In this way, is considered a resource allowing reduction in quantity it going landfills derived greenhouse gas emissions. Simultaneously, upgrading process into biomethane can address issues dealing with decarbonization transport. work, wastes plug flow reactor analyzed. order steer chemical reactions, temperature must be kept under control. A new simulation model, implemented MatLab® environment, developed predict field within reactor, assess how affects growth decay main microbial species. thermal based two equilibrium equations, describe heat transfer between digester environment internal exchanger. biological suitable differential also included for calculation processes occurring reactor. proposed model by combination these models, able simultaneously simulate both addition energy demand, plant requires huge amounts electricity presence process, converting biomethane. Therefore, in-house integrated TRNSYS perform yearly dynamic other renewable technologies. system layout, required control matched solar source. electrical demand met means photovoltaic field. detailed thermoeconomic analysis compare environmental impact economic feasibility fed renewables. Several incentives compared determine optimal terms savings. designed treatment rate equal 626.4 kg/h, produced, approximately 850 tons/years, injected national grid or supplied stations. plant, evacuated tube collector having surface 200 m2 satisfy 35% while over 50% electric 400 m2. promising payback time 5 years was estimated.