Exergy-environmental analysis and optimisation of the modified organic Rankine cycle driven by geothermal and biomass energies
Mohammad Ali Sabbaghi, Mohammad Sefid
Abstract
In this paper, thermodynamic analysis and optimisation studies are investigated on an ORC for multi-generation using geothermal and biomass energies. Results indicated that the ORC is responsible for 65% of the total exergy destruction rate. The produced hydrogen and freshwater rates are 1.264 lit/s and 5.9 kg/s, respectively. By increasing the temperature of the geothermal source from 400 K to 430 K, the hydrogen and freshwater production rates increase to 19.6% and 17.6%. If all energy is supplied by biomass, the amount of emitted CO2 will increase to 60.3%.
Topics & Concepts
Organic Rankine cycleExergyGeothermal gradientBiomass (ecology)Geothermal energyEnvironmental scienceHydrogen productionDegree RankineHydrogenPulp and paper industryWaste managementThermodynamicsEnvironmental chemistryElectricity generationChemistryGeologyPhysicsPower (physics)OceanographyGeophysicsEngineeringOrganic chemistryThermodynamic and Exergetic Analyses of Power and Cooling SystemsIntegrated Energy Systems OptimizationProcess Optimization and Integration