Thermodynamic and economic analysis of a synthetic fuel production plant via CO2 hydrogenation using waste heat from an iron-steel facility

Özcan, Hasan; Kayabaşı, Erhan

doi:10.1016/j.enconman.2021.114074

Cited by 20 publications

(12 citation statements)

References 27 publications

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“…In a study by Özcan et al [13], the thermodynamic and economic feasibility of using medium-temperature waste heat from an ironworks for the production of synthetic fuels through CO 2 hydrogen separation was investigated. The process was presented, and the results showed that the methanol production plant used was able to achieve an efficiency of up to 19% under optimal conditions with methanol costs of $532 per ton and a daily methanol capacity of 3.69 tons and thus was competitive with other plants producing clean synthetic fuels.…”

Section: State Of Research/literature Reviewmentioning

confidence: 99%

Production and Economic Assessment of Synthetic Fuels in Agriculture—A Case Study from Northern Germany

Fuchs¹,

Meyer²,

Poehls³

2022

Energies

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A climate-friendly and CO2-neutral energy supply for agricultural farms is the subject of investigation of this study. The supply concerns the internal economy (buildings and animal husbandry) as well as the production of synthetic fuels for outdoor work (cultivation of the fields). This energy is in demand with many customers, e.g., the dairy cooperative Arla Foods, whose goal is the production of cow’s milk with net-zero CO2 emissions by the year 2050. The operational energy system considered here included renewable electricity generation, covering electricity consumption in the cowshed, battery storage for times without electricity generation, the production of synthetic fuels and feeding into the public power grid. Fluctuations depending on the day and the season were taken into account for electricity at 15-min intervals and for fuel per calendar week for one year. The aim was to determine the necessary capacities of renewable energy (RE) generation systems and production systems for synthetic fuel, as well as an economic evaluation with the calculation of the energy costs per kWh and the break-evens for the capital expenses (CapEx). Two different scenarios were developed using the example of a survey dairy farm with an annual electricity consumption of approximately 80,000 kWh in the cowshed and an annual diesel consumption of 35,000 L, corresponding to 350,000 kWh for field work. To ensure the energy supply, Scenario 1 required a photovoltaic system (PV) on the roof with an output of 125 kWp, a 250 kW small wind turbine, a battery with a storage capacity of 2 kWh and synthetic fuel production with an output of 210 kW. Scenario 2 required a 200 kWp PV system on the roof and a 520 kWp PV system in the open fields, a battery with a 105 kWh storage capacity and a synthetic fuel production facility with an output of 385 kW to cover the farm’s energy needs. The results showed that a farm’s own electricity production is currently profitable; however, a farm’s production of synthetic fuel still has comparatively high costs and therefore is not yet profitable. Further technical advances, rising prices of fossil fuels and economies of scale, e.g., larger cooperatively-operated plants, could help new technology to make a breakthrough.

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Section: State Of Research/literature Reviewmentioning

confidence: 99%

Production and Economic Assessment of Synthetic Fuels in Agriculture—A Case Study from Northern Germany

Fuchs¹,

Meyer²,

Poehls³

2022

Energies

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“…The organic fluid enters the evaporator 2 and pump 1, respectively. The organic fluid enters the evaporator 2 for isostatic heating (10)(11)(12) to produce low-pressure organic superheated steam, and the low-pressure organic superheated steam enters the expander. The organic fluid enters pump 1 for isentropic compression (10)(11), and then enters evaporator 1 for isostatic heating (11-1) to produce high-pressure organic superheated steam.…”

Section: Storcmentioning

confidence: 99%

“…The waste energy recovery equipment recovers waste energy and generates superheated steam. Superheated steam enters the pressure regulating valve through the steam drum for isentropic pressure reduction adjustment (11)(12)(13)(14)(15), and then enters the steam-water separation device. In this process, superheated steam is converted to saturated steam.…”

Section: Sspgmentioning

confidence: 99%

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Energy Optimization Based on Steam System Analysis and Waste Energy Recovery for Iron and Steel Industry

et al. 2022

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To solve the unreasonable energy distribution and excessive energy waste in the steam system of iron and steel (I&S) industry, a mixed integer linear programming model based on the theory of exergy and energy level is developed in this study to optimize the steam system. After optimization, the utilization potential of waste energy is found. Then, several waste energy recovery technologies are compared according to their application results. The results show that the exergy efficiency of steam system is 74.065%. After optimization, the exergy efficiency of steam system is increased by 10.568%, the energy input of the I&S enterprise is reduced by 84.30 MJ t−1‐CS−1, and waste energy potential is found at hot rolling, sintering, and converter. Herein, flue gas waste heat from hot rolling and sintering is recovered using series two‐stage Organic Rankine Cycle with cyclopentane as the working fluid, and steam waste energy from converter is recovered using saturated steam power generation. These waste energy technologies increase the electricity generation of I&S enterprise by 15.25 kWh t−1‐CS−1. Overall, combining the optimization model with the use of waste energy recovery technologies is necessary and effective for I&S enterprise to increase their energy efficiency.

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“…Waste heat recovery is a hot topic for many industrial applications such as automotive, iron steel, glass, ventilation and air conditioning, power cycles due to the increase in oil prices on macroeconomic indicators [1][2][3][4][5][6]. However, some devices also need to be cooled to remain at optimum operating conditions, such as electronic devices and microprocessors.…”

Section: Introductionmentioning

confidence: 99%

Design and Simulation of Ethylene Cooled Microchannel Heat Exchanger for Micro Processors

Tom¹,

Kayabaşı²

2021

El-Cezeri Fen Ve Mühendislik Dergisi

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In this study, a microchannel heat exchanger was proposed instead of a conventional air-cooled heat sink in order to obtain uniform surface temperature distribution. In addition, flow and heat transfer simulations were performed using Flo-EFD software. First, the temperature distribution of the air domain and microprocessor in the computer case was obtained. Afterward, the system with the proposed microchannel heat exchanger was subjected to the same processes, and the results were compared. As a result of the study, it was revealed that the microchannel heat exchanger reduced the processor temperature between 54-55 °C and 18-19 °C. It has also been observed that removing the heat sink allows the air drawn from the outside environment to circulate more efficiently around other heat-generating elements in the computer case. Hence, a more homogeneous and lower temperature distribution within the computer case was obtained.

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Thermodynamic and economic analysis of a synthetic fuel production plant via CO2 hydrogenation using waste heat from an iron-steel facility

Cited by 20 publications

References 27 publications

Production and Economic Assessment of Synthetic Fuels in Agriculture—A Case Study from Northern Germany

Production and Economic Assessment of Synthetic Fuels in Agriculture—A Case Study from Northern Germany

Energy Optimization Based on Steam System Analysis and Waste Energy Recovery for Iron and Steel Industry

Design and Simulation of Ethylene Cooled Microchannel Heat Exchanger for Micro Processors

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