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A review on the cooling of energy conversion and storage systems using thermoelectric modules

Journal of Central South University 2024年第6期31卷 1998-2026页

作者： Amirreza IJADI mehran rajabi zargarabadi Saman RASHIDI Amir Mohammad JADIDI Department of Energy Faculty of New Sciences and TechnologiesSemnan UniversitySemnanIran Faculty of Mechanical Engineering Semnan UniversityP.O.B.***SemnanIran

Exploitation of sustainable energy sources requires the use of unique conversion and storage systems,such as solar panels,batteries,fuel cells,and electronic *** load management of these energy conversion and storage systems is one of their challenges and *** this article,the thermal management of these systems using thermoelectric modules is *** results show that by choosing the right option to remove heat from the hot side of the thermoelectric modules,it will be a suitable local cooling,and the thermoelectric modules increase the power and lifespan of the system by reducing the spot *** modules were effective in reducing panel *** increase the time to reach a temperature above 50℃ in batteries by 3 to 4 ***,in their integration with fuel cells,they increase the power density of the fuel cell.

关键词： cooling photovoltaic lithium-ion batteries fuel cell electronic equipment thermoelectric modules

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Second-order modeling of non-premixed turbulent methane-air combustion

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Journal of Central South University 2021年第11期28卷 3545-3555页

作者： Ali ERSHADI mehran rajabi zargarabadi Faculty of Mechanical Engineering Semnan UniversityP.O.B.35131-191SemnanIran Department of Mechanical Engineering Dezful BranchIslamic Azad UniversityDezfulIran

The main purpose of this research is the second-order modeling of flow and turbulent heat flux in nonpremixed methane-air combustion.A turbulent stream of non-premixed combustion in a stoichiometric condition,is numerically analyzed through the Reynolds averaged Navier-Stokes(RANS) *** modeling radiation and combustion,the discrete ordinates(DO) and eddy dissipation concept model have been *** Reynolds stress transport model(RSM) also was used for turbulence *** THF in the energy equation,the GGDH model and high order algebraic model of HOGGDH with simple eddy diffusivity model have been *** the numerical results of the SED model(with the turbulent Prandtl 0.85) and the second-order heat flux models with available experimental data follows that applying the second-order models significantly led to the modification of predicting temperature distribution and species mass fraction distribution in the combustion *** of turbulent Prandtl number in the combustion chamber shows that the assumption of Pr_(t) of 0.85 is far from reality and Pr_(t) in different areas varies from 0.4 to 1.2.

关键词： combustion modeling turbulent Prandtl number second-order models Reynolds stress transport model

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Effects of rib on cooling performance of photovoltaic modules(PV/PCM-Rib)

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Journal of Central South University 2021年第11期28卷 3449-3465页

作者： Amir SADEGHIAN mehran rajabi zargarabadi Maziar DEHGHAN Faculty of Mechanical Engineering Semnan UniversitySemnan 35131-191Iran Department of Energy Materials and Energy Research Center(MERC)TehranIran

Increasing the temperature of photovoltaic systems reduces electrical efficiency,output power,as well as results in permanent damages in the long-term run.A new hybrid PV/PCM-Rib system with three different rib pitch ratios of Λ =4,Λ =2 and Λ =1 is investigated to reduce PV temperature and achieve uniform temperature distribution.A comprehensive two-dimensional model of the systems is developed and simulated with a fixed inclination angle of 30°.A parametric study is carried out to investigate the impact of ribs on different melting temperatures(50,40 and 30 ℃).According to the numerical results and the parametric analysis,using ribs shows better performance in temperature reduction for PCM with a lower melting *** lowering the melting temperature of PCM from 50 to 30 ℃,the average temperature reduction of PV/PCM-Rib in the case of Λ =1 increases from 1.39% to 5.16% while the average melted PCM decreases from 20.5% to 7.59% after 240 *** means that using ribs provides more solid *** is also obtained that the electrical efficiency and output power show more increments at lower melting temperatures.

关键词： numerical simulation photovoltaic cooling PCM rib

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