Evaluation of the Energy Supply Options of a Manufacturing Plant by the Application of the P-Graph Framework

Industrial applications nowadays are facing the complexity of the problem of finding an optimal energy supply composition. Heating and electricity needs vary throughout a year and need to be addressed. There is usually power available from the market, but a company has other investment options to co...

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Bibliographic Details
Published in:Energies (Basel) 2019-04, Vol.12 (8), p.1484
Main Authors: Éles, András, Halász, László, Heckl, István, Cabezas, Heriberto
Format: Article
Language:English
Subjects:
Algorithms
Alternative energy sources
Biogas
Biomass
Carbon
Carbon dioxide
Climate change
Consumption
Costs
Electricity
Energy
Energy consumption
Energy conversion
energy efficiency
Energy resources
Energy sources
Hydroelectric power
Industrial plants
Manufacturing
Mathematical programming
Modelling
Monte Carlo simulation
multi-periodic model
Operating costs
Optimization
P-Graph framework
Population
process network synthesis
Raw materials
Renewable energy sources
Solar energy
Supply chains
Sustainability
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Summary:Industrial applications nowadays are facing the complexity of the problem of finding an optimal energy supply composition. Heating and electricity needs vary throughout a year and need to be addressed. There is usually power available from the market, but a company has other investment options to consider, such as solar power, or utilization of local biomass. Fixed and proportional investment and operational costs must be compared to long-term cost-efficiency. The P-Graph framework is an effective tool in the design and synthesis of process networks, and is capable of showing optimal decisions. In the present work, a new P-Graph model was implemented to address the synthesis of the energy supply options of a manufacturing plant in Hungary. Compared to the original approach, a multi-periodic scheme was applied for heating and electricity demands. Also, the pelletizer and biogas plant investments are modeled in the P-Graph with a new technique that better reflects equipment capacities and flexible input ratios. The best solutions in this case study in terms of total costs are listed. It can be concluded that a long-term investment horizon is needed for the incorporation of sustainable energy sources into the system to be cost-efficient.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12081484