scholarly journals Assessing the value of a diversified by-product portfolio to allow for increased production flexibility in pulp mills

2020 ◽  
Vol 35 (4) ◽  
pp. 533-558
Author(s):  
Elin Svensson ◽  
Rikard Edland ◽  
Christian Langner ◽  
Simon Harvey
Keyword(s):  
Electric Power ◽  
Pulp Mill ◽  
Power Production ◽  
Energy Prices ◽  
Electricity Prices ◽  
Electric Power Production ◽  
Lignin Extraction ◽  
Production Flexibility ◽  
Turbine Capacity

AbstractThis paper presents a model for design optimization of pulp mill steam utility systems subject to variations in energy prices and steam demands. A Scandinavian Kraft pulp mill is used as case study to investigate investment opportunities in lignin extraction and new turbines. The model enables solutions to be identified that are more flexible than the solutions that would have been identified with a corresponding model using, for example, annual average values for key input data. The results from the case study show that lignin extraction has a potential to contribute to flexibility in pulp mill electric power production under certain conditions provided that the mill invests in both lignin extraction and condensing turbine capacity. However, the potential electric power production flexibility will vary over time. In the studied mill, with a capacity increased to around 1.3 million tonnes/a of pulp, it is estimated to vary between 15 and 30 MW. Furthermore, investment in new condensing turbine capacity only seems to be attractive if electricity prices that are considerably higher than the spot prices of recent years are assumed. Such prices may occur if there is a clear value of tradable electricity certificates or if future electricity prices rise significantly.

scholarly journals Feasibility Study of Supercritical Light Water Cooled Reactors for Electric Power Production

2005 ◽  
Author(s):  
Philip MacDonald ◽  
Jacopo Buongiorno ◽  
James Sterbentz ◽  
Cliff Davis ◽  
Robert Witt ◽  
...  
Keyword(s):  
Electric Power ◽  
Feasibility Study ◽  
Power Production ◽  
Light Water ◽  
Electric Power Production

Energy Sustainability through Combined Electric Power Production and Carbon-Dioxide Separation (CEPACS) Systems

2019 ◽  
Vol 42 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Hossein Ghezel-Ayagh ◽  
Jennifer Hunt ◽  
Stephen Jolly ◽  
Dilip Patel ◽  
Robert Sanderson
Keyword(s):  
Carbon Dioxide ◽  
Electric Power ◽  
Power Production ◽  
Energy Sustainability ◽  
Carbon Dioxide Separation ◽  
Electric Power Production

scholarly journals Optimum Renewable Energy Investment Planning in Terms of Current Deficit: Turkey Model

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1509 ◽  
Author(s):  
Sinem Yapar Saçık ◽  
Nihal Yokuş ◽  
Mehmet Alagöz ◽  
Turgut Yokuş
Keyword(s):  
Renewable Energy ◽  
Solar Energy ◽  
Electric Power ◽  
Optimization Model ◽  
Co2 Emission ◽  
Power Production ◽  
Energy Investment ◽  
Electric Power Production ◽  
Renewable Energy Investment ◽  
Current Deficit

In this study, a methodology was suggested for wind and solar energy investment plans through linear optimization model for the countries with an energy-based current deficit problem. The originality of the study is that it is a renewable energy investment model based on the functioning of the balance of payments for current deficit reduction, which has not previously been encountered in the literature. While creating the model, without causing external economic imbalance, certain parameters were taken into consideration such as profit transfers for the foreign direct investments, interest payments for the domestic investments, import rates for the wind and solar energy systems, energy electric power production values, electric power load balance, electricity transmission infrastructure, CO2 emission, future electric power demand projection, and import source rates in the electric power production. It was proven that the model, for the 2019–2030 period in Turkey, not only is an opportunity for decreasing the current deficit but also ensures reaching the CO2 emission reduction target. Additionally, through the investments in wind and solar energy, it was calculated that fossil-based electric power production will decrease by 80%, and a CO2 reduction will be provided, which is equivalent of 100 million tonnes GWh natural gas. As a more general result, an optimization model was created which provides a solution for countries coping with energy-based current deficit in economic terms, energy-based air pollution in environmental terms, and renewable energy technology insufficiency.

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