CFD modeling and simulation of sulfur trioxide decomposition in ceramic plate-fin high temperature heat exchanger and decomposer

Nagarajan, Vijaisri; Chen, Yitung; Wang, Qiuwang; Ma, Ting

doi:10.1016/j.ijheatmasstransfer.2014.09.005

Cited by 15 publications

(4 citation statements)

References 11 publications

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“…9 Therefore, the energy efficiency of the whole S-I cycle significantly depends on the H 2 SO 4 decomposition reaction; several studies have focused on this reaction. 10 The decomposition of H 2 SO 4 includes the following two steps:…”

Section: Introductionmentioning

confidence: 99%

Computational design of H ₂ SO ₄ decomposer combined with SOFC for thermochemical hydrogen production

Qian

Jung

2021

Int J Energy Res

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Section: Introductionmentioning

confidence: 99%

Computational design of H ₂ SO ₄ decomposer combined with SOFC for thermochemical hydrogen production

Qian

Jung

2021

Int J Energy Res

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“…Compared with traditional theoretical and experimental methods, numerical simulations can provide better designs by relatively accurately predicting the flow field details with low costs and has been successfully applied in the fields of heat transfer, multiphase flow, and species transport . Nagarajan et al numerically modeled the sulfur trioxide decomposition in a bayonet‐type heat exchanger and chemical decomposer using two‐dimensional and three‐dimensional models of a sulfuric acid decomposer with a porous media zone and various packed bed designs to maximize the sulfur trioxide conversion. Parma et al used two numerical models to predict the energy balance for the H 2 SO 4 to SO 2 conversion process and the heat transfer in the decomposition unit.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of heat transfer and sulfuric acid decomposition in the process of hydrogen production

et al. 2019

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Summary The sulfuric acid decomposer is the key equipment of the iodine‐sulfur cycle to achieve hydrogen production utilizing high temperature of very high‐temperature gas‐cooled reactor (VHTR). This study discusses sulfuric acid decomposer design and pipeline layout to improve the performance of the sulfuric acid decomposer based on a shell‐and‐tube heat exchanger with a bayonet heat exchanger as the core. The finite volume method was used to numerically calculate the heat transfer, temperature distribution, baffle layout, and sulfur trioxide decomposition rate in the sulfuric acid decomposer. The results show that the convective heat transfer coefficient of the fully developed section of the sulfuric acid decomposer for the given conditions is about 10 W·m−2·K−1 and the average temperature of the sulfuric acid in the catalyst region is about 1040 K. For the design, the inlet manifold plate effectively distributes the inlet helium, while the staggered baffles in the shell and tube heat exchanger increase the heat transfer area and improve the helium distribution to enhance the heat transfer. The prediction shows that the sulfur trioxide decomposition rate is about 60% in the catalyst region under design VHTR condition, which is in agreement with experimental measurement under corresponding temperature and space velocity. The results provide a reference for the design of sulfuric acid decomposers for VHTR.

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“…At the same time, they proposed the correlations of Nusselt number and friction factor. By fitting different kinds of fins in an intercooler, Chen et al [4][5][6] obtained the correlations between heat transfer factors and friction factors of fins with different structures. The correlations can evaluate the heat transfer efficiency of fins better.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Compressible Flow on Heat Transfer Performance of Heat Exchanger by Computational Fluid Dynamics (CFD) Simulation

Qin

Chai

et al. 2019

Entropy

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As a part of vehicle thermal management, water-cooled intercoolers play an important role in engine efficiency. The incompressible simulation model was usually applied to estimate the performance of water-cooled intercoolers. In this paper, the computational fluid dynamics (CFD) compressible model is taken to analyze more accurate prediction models. The rate of section change, heat exchange, and the surface friction coefficient are used as the comparison basis of the compressible flow model and incompressible model on the pressurized air side of the water-cooled intercooler. By comparing the simulation results of the air side, it was found that the compressible simulation is closer to the experimental value than the incompressible simulation. Compared with the experiment, the compressible model heat transfer maximum value of deviation is 6.5%, and the pressure loss maximum deviation is 7.5%. This provides guidance to optimize the design of heat exchangers, in order to save on costs and shorten development times.

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CFD modeling and simulation of sulfur trioxide decomposition in ceramic plate-fin high temperature heat exchanger and decomposer

Cited by 15 publications

References 11 publications

Computational design of H ₂ SO ₄ decomposer combined with SOFC for thermochemical hydrogen production

Computational design of H ₂ SO ₄ decomposer combined with SOFC for thermochemical hydrogen production

Numerical study of heat transfer and sulfuric acid decomposition in the process of hydrogen production

The Effect of Compressible Flow on Heat Transfer Performance of Heat Exchanger by Computational Fluid Dynamics (CFD) Simulation

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CFD modeling and simulation of sulfur trioxide decomposition in ceramic plate-fin high temperature heat exchanger and decomposer

Cited by 15 publications

References 11 publications

Computational design of H 2 SO 4 decomposer combined with SOFC for thermochemical hydrogen production

Computational design of H 2 SO 4 decomposer combined with SOFC for thermochemical hydrogen production

Numerical study of heat transfer and sulfuric acid decomposition in the process of hydrogen production

The Effect of Compressible Flow on Heat Transfer Performance of Heat Exchanger by Computational Fluid Dynamics (CFD) Simulation

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Computational design of H ₂ SO ₄ decomposer combined with SOFC for thermochemical hydrogen production

Computational design of H ₂ SO ₄ decomposer combined with SOFC for thermochemical hydrogen production