Mohd Parvez , Osama Khan , Shiv Lal , Mumtaz Ahmad
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Thermodynamic analysis of a solar-biomass cogeneration power and cooling by employing an ejector and single-effect absorption refrigeration system
In the present research, a novel solar-biomass hybrid cogeneration energy system is designed to operate in all weather condition where biomass and Direct Normal Irradiance (DNI) both are available. The proposed model integrates the Rankine cycle with an ejector and absorption refrigeration cycle, which utilized the low-temperature energy source available at the exit of the steam turbine and Heat Recovery Steam Generator (HRSG) to produce power and cooling simultaneously. The solid waste, rice husk, sugarcane bagasse and apple bagasse biomasses are used in the fluidized bed gasifier. First and second law analysis tools are used in order to assess the performance of the cogeneration energy system. The results find out the effects of some parameters on first and second law efficiencies when operated on both biomass and solar energy. The overall first and second law efficiencies of the system are found to be 42.29% and 39.72% for solid waste ranking 1 amongst all the four biomass materials respectively. A slight gain in the first and second law efficiencies 62.1% and 27.71% was observed after a considerable increase in the value of DNI at different operating conditions. The overall cycle efficiency is increasing due to cogeneration system and it is economically viable option because solar energy is freely available everywhere.
期刊介绍:
Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials.
The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy.
Key areas covered by the journal:
• Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation.
• Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal.
• Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes
• Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation
• Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.