A biomass-integrated comprehensive energy system: thermodynamics assessment and performance comparison of sugarcane bagasse and rice husk as input source

The conversion of different waste materials into biogas through anaerobic digestion process has been presented in different literatures. However, studies about the application of these biomass energy resources are limited. The thermodynamic assessment of a neoteric biomass-integrated comprehensive energy system configuration is studied. This study aims to investigate the multigeneration performance of the novel energy system and compare its thermodynamic efficiencies with two different input sources. This study will provide an insight into the better choice of biomass-based thermal input source for thermodynamic modeling. The system is developed to generate power, cooling, hot water, and hydrogen with a steam (power) cycle, absorption system, hot water tank, and polymer electrolyte membrane electrolyzer. With the aim to compare biomass from two different sources, biogas generated from rice husk and sugarcane bagasse is integrated as the thermal input and energetic/exergetic performance of the system presented in this study. The overall energy and exergy efficiencies of the system are 34.83% and 12% for rice husk biomass integrated system, and 68.29%, and 21.85% for sugarcane bagasse-integrated system. The highest exergy destruction was recorded at the boiler stage of the comprehensive energy system.