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Journal of Thermal Engineering cover
Engineering

Journal of Thermal Engineering

eISSN 2148-7847Launched 2015
1,117 articlesCurrent issue
1 / 1
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Latest Research

Explore our most recent publications across diverse disciplines.

ReviewJan 1, 2026
A critical review on energy harvesting approaches by using thermoelectric generator in solar photovo
Shridhar Kedar, Neeta Mandhare, Harish Shinde + 6 authors

Electricity generated from sunlight has been proven to be one of the most practical solutions for meeting the world’s energy needs. To be competitive with conventional energy resources, the solar cell, a semiconductor device that directly converts solar radiation into electrical power, requires ongoing improvements in conversion efficiency and economic viability. This paper reviews the fundamentals of thermoelectric generators, including the operating principle. The main aim of the paper was to present an energy-harvesting approach that uses a thermoelectric generator, to prove the application of this hybrid technology, and to summarize the findings. Thermoelectric generators provide a means of cogenerating heating, cooling, and electricity from either waste heat or the primary heat flux of solar energy systems, thereby enhancing system efficiency and functionality. The combination of photovoltaic systems and thermoelectric generators, which together provide heating and cooling while generating electricity, has been discussed in the literature. This paper evaluates the methods and effects of thermoelectric devices on the functionality of photovoltaic systems through a review of the published literature. This study provided a comprehensive analysis of recent work in this field, including solar photovoltaic systems, solar energy applications, and potential solar configurations for industrial use.

Journal of Thermal Engineering
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ArticleJan 1, 2026
Advanced wick structures for heat pipes and vapor chambers a review on materials design and applicat
YinJiang Wu, Jing Zhang, Keke Tian + 5 authors

High-heat-flux dissipation technology has become a key bottleneck restricting development in fields such as electronic information, new energy vehicles, aerospace, high-power semiconductor devices, and data centers. The heat transfer performance of heat pipes and vapor chambers mainly depends on the structural characteristics of their core part—the wick. Therefore, in-depth research on wick structures is of great practical significance for addressing the thermal management challenges in the fields. Focusing on metal-based wicks, this study combines a literature review with quantitative analysis and systematically classifies them into 4 major categories (with 13 subcategories). These four categories are homogeneous porous structures, biporous structures, composite structures, and other structures. The key influencing factors (such as particle size, pore size, thickness, and preparation process) and best parameter ranges of various wicks are systematically discussed, their heat transfer performance and application adaptability are compared, and a “scenario-parameter-performance” matching framework is set up. The results show that biporous metal powder wicks exhibit the best performance with respect to critical heat flux and superheat temperature; composite wicks possess both high capillary force and high permeability; homogeneous porous wicks are simple to prepare but have relatively limited performance. Notably, discrepancies between actual test results and theoretical predictions are mainly attributable to inconsistencies in test components (single-wick, assembled heat pipe or vapor chamber), dimensions, heating power, and cooling conditions. Based on the above findings, it can be inferred that the core of wick performance optimization lies in achieving a synergistic balance between capillary force and permeability, and in customizing parameters for specific application scenarios. This study proposes a refined classification system and conducts cross-type comparisons of their heat transfer performance, thereby providing a reliable reference for engineering applications. Future research should incorporate actual operating conditions, improve wick performance, perfect long-term reliability, standardize test methods, and promote the transformation of composite wicks from laboratory research to large-scale engineering applications.

Journal of Thermal Engineering
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ArticleJan 1, 2026
Analysis of the Magnetohydrodynamics Casson fluid flow with an exponentially accelerated plate incor
Mr. Shital Anant Patil, Dr. Bharti V. Nathwani, Dr. Harshad Patel

This article provides study of the Magnetohydrodynamics flow of a Casson fluid influenced by heat and mass transfer in an unsteady free convection environment with a rotating porous medium. The investigation considers different physical parameters like the Soret and Hall phenomena, thermal radiation, and chemical reaction, that are important in biomedical engineering, industrial processing, and magneto-thermal systems. The flow is considered between the exponentially accelerating plates, with both ramped and constant temperature and concentration boundary conditions. A set of coupled dimensionless differential equations that governs the flow are made dimensionless by a similarity transform and then evaluated numerically using MATLAB bvp4bc function. The results prove that the primary velocity enhances with higher hall parameter, permeability, and thermal and solutal Grashof numbers, while the thermal profile declines with enhancing radiation and Prandtl numbers. Also, the concentration levels rise with greater Soret and Schmidt parameters. The novelty of this work is that it combined modelling of reactive, thermodiffusive, and electromagnetic effects in a rotating porous system, which goes beyond earlier research that usually dealt with these phenomena separately.

Journal of Thermal Engineering
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Cleaner combustion of bio-based rice bran oil diesel fuel using titanium oxide nanoparticle additive

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