Thermodynamic modeling of a nuclear energy based integrated system for hydrogen production and liquefaction

Özcan, Hasan; Dinçer, İbrahim

doi:10.1016/j.compchemeng.2016.04.015

Cited by 50 publications

(21 citation statements)

References 14 publications

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“…A storage technology with a higher mass density can be achieved by using a hydrogen liquefaction system because liquid hydrogen at atmospheric pressure has nearly twice the density of compressed hydrogen produced by the proposed system. In terms of energy consumption, the hydrogen liquefaction system analyzed thermodynamically in requires nearly six times the energy consumed by the proposed system for filling the same container.…”

Section: Resultsmentioning

confidence: 99%

Transient Energy and Exergy Analyses of a Multistage Hydrogen Compression and Storage System

2018

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A new, practical, and efficient hydrogen compression and storage system is developed and analyzed thermodynamically through transient energy and exergy approaches. The first model of the multistage hydrogen compression system consists of multiple compressors with variable pressure ratios; all operating at the same variable pressure ratio. The second model has two fixed filling times, as a result of its operational mode. The second model integrates constant pressure ratio compressors with a controller that runs the required number of compressors based on the pressure in the vessel. The overall system and its components are simulated in Aspen Plus and Engineering Equation Solver, with which their performances are evaluated based on energy and exergy analyses.

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Section: Resultsmentioning

confidence: 99%

Transient Energy and Exergy Analyses of a Multistage Hydrogen Compression and Storage System

2018

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“…The nuclear based high temperature steam electrolysis (HTSE) proposed by Ozcan and Dincer [24] had also 18.6% and 31.35% energy and exergy efficiencies and the overall energy and exergy efficiencies of coal gasification based hydrogen production system proposed by Seyitoglu et al [25] were 41% and 36.5% respectively. Also exergetic efficiency of biogas-based High temperature steam electrolysis hydrogen production proposed by Abuşoğlu et al [26] was reported by 25.83%.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamics analysis for high temperature hydrogen production system

et al. 2019

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Using clean energy sources is considered as a prevention solution for global warming. Hydrogen is one of the most popular clean and renewable fuel which is widely noticed by researchers in different approaches from additive fuel of internal combustion engines to pure feed of fuel cells. Hydrogen production is also one of the most interested field of studies and extended efforts are doing to fined high performance, fast and economical ways of its production. In this work, a novel high temperature steam electrolyser system with main solar integrated Brayton cycle core is proposed and numerically simulated to achieve this goal.Energy and exergy analysis having better perception of system performance is done and Rankine and organic Rankine cycles were utilized cooperating with the main core to improve its efficiency. The influences of different parameters such as turbine inlet temperature, inlet heat flux from the sun, compression ratio and also used organic fluid were investigated based first and second laws. Results show the high performance of proposed system, more than 98% energy efficiency of hydrogen production, besides the simplicity of utilizing it. The most exergy destruction occurs in sun heat flux absorption of

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“…Ozcan and Dincer concluded that Mg‐Cl cycles have competitive energy and exergy efficiencies compared with other hybrid thermochemical water decomposition cycles such as copper‐ and chlorine‐based cycles. Ozcan and Dincer proposed an integrated system that is nuclear energy based on hydrogen produced through 4 main reactions from an Mg‐Cl cycle that decomposes water. Ozcan and Dincer considered a particular Generation IV nuclear reactor; the supercritical water cooled reactor and reported energy and exergy efficiencies are 18.6% and 31.4%, respectively, for the system .…”

Section: Introductionmentioning

confidence: 99%

“…Ozcan and Dincer proposed an integrated system that is nuclear energy based on hydrogen produced through 4 main reactions from an Mg‐Cl cycle that decomposes water. Ozcan and Dincer considered a particular Generation IV nuclear reactor; the supercritical water cooled reactor and reported energy and exergy efficiencies are 18.6% and 31.4%, respectively, for the system . The cycle economics was analyzed through an exergy viewpoint, via exergoeconomic analysis …”

Section: Introductionmentioning

confidence: 99%

“…Ozcan and Dincer 11 considered a particular Generation IV nuclear reactor; the supercritical water cooled reactor and reported energy and exergy efficiencies are 18.6% and 31.4%, respectively, for the system. 11 The cycle economics was analyzed through an exergy viewpoint, via exergoeconomic analysis. 12 Another type of hybrid thermochemical water decomposition cycle is based on copper and chlorine compounds (Cu-Cl cycle).…”

Section: Introductionmentioning

confidence: 99%

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Assessment and analysis of hydrogen and electricity production from a Generation IV lead-cooled nuclear reactor integrated with a copper-chlorine thermochemical cycle

2017

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SummaryAn integrated system for compressed hydrogen and electrical power production based on a Generation IV nuclear reactor (a lead-cooled reactor) is proposed.The hydrogen is produced by the integrated system through a hybrid thermochemical and electrical water decomposition cycle. The water decomposition cycle is based on copper and chlorine compounds and decomposes water through four main steps. The electrical power is produced by the Rankine cycle, which also contributes to cooling the compressed hydrogen between the compression stages as well as providing the electrical power required by the electrolysis step in the water decomposition cycle. In the proposed system, a heat recovery network is incorporated within the water decomposition cycle so that only the hydrolysis and the oxygen production reactors in the cycle receive thermal energy from the lead-cooled nuclear reactor. The integrated system is modeled and simulated by using engineering process simulation software (Aspen Plus). The performance of the integrated system is assessed with energy and exergy analyses, and the overall energy and exergy efficiencies are found to be 25.4% and 40.6%, respectively. The integrated system produces 3.45 g/s of compressed hydrogen ready for shipping and 467.2 kW of electrical power.KEYWORDS copper-chlorine cycle, energy, exergy, hydrogen production, lead cooled fast reactor, thermochemical cycle Nomenclature: c p , specific heat capacity at constant pressure (kJ/kg K); ex, specific exergy (kJ/kg); _ Ex, exergy rate (kW); h, specific enthalpy (kJ/kg); _ m, mass flow rate (kg/s); P, pressure (kPa); _ Q, heat rate (kW); R, universal gas constant (kJ/mol K); s, specific entropy (kJ/kg K); T, temperature (°C); _ W, work rate (kW)

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Thermodynamic modeling of a nuclear energy based integrated system for hydrogen production and liquefaction

Cited by 50 publications

References 14 publications

Transient Energy and Exergy Analyses of a Multistage Hydrogen Compression and Storage System

Transient Energy and Exergy Analyses of a Multistage Hydrogen Compression and Storage System

Thermodynamics analysis for high temperature hydrogen production system

Assessment and analysis of hydrogen and electricity production from a Generation IV lead-cooled nuclear reactor integrated with a copper-chlorine thermochemical cycle

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