Guest Editors
Dr. Jinhuan Pu
Email: j.pu@sdu.edu.cn
Affiliation: Institute for Advanced Technology, Shandong University, No. 27 Shanda South Road, Jinan, 250100, China
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Research Interests: micro- and nanoscale fluid flow and heat transfer, phase-change heat transfer, thermal management technologies, solar energy utilization, heat pump technologies, design and simulation of advanced heat exchangers, modeling and design of advanced energy systems, energy storage technologies

Prof. Haowei Hu
Email: huhaoweihhw@foxmail.com
Affiliation: School of Environment and Energy Engineering, Anhui Jianzhu University, No.292 Ziyun Road, Hefei, 230601, China
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Research Interests: condensation phase change heat and mass transfer, micro-nano scale flow and heat transfer, waste heat recovery and utilization, advanced numerical computation methods, building energy-saving technology, passive energy-efficient design

Dr. Haiyan Yu
Email: yuhaiyan@sdu.edu.cn
Affiliation: Institute of Thermal Science and Technology, Shandong University, No.17923 Jingshi Road, Jinan, 250061, China
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Research Interests: microscale thermal radiation, heat and mass transfer in porous materials, thermal conductivity of microporous polymers

Assoc. Prof. Peng Yang
Email: yp2019@mail.xjtu.edu.cn
Affiliation: School of Energy and Power Engineering, Xi'an Jiaotong University, No.28 West Xianning Road, Xi’an, 710049, China
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Research Interests: enhancement mechanism and prediction of heat and mass transfer processes, including condensation and evaporation, thermal management of confined spaces and power devices, thermodynamic system optimization and energy efficiency improvement

Summary
Microscale heat transfer plays an increasingly important role in addressing the global demand for efficient, sustainable, and clean energy technologies. As energy systems continue to evolve toward higher compactness, multifunctionality, and integration with renewable sources, understanding transport phenomena at small scales becomes crucial. Investigating thermal transport at the micro- and nanoscales enables advancements in energy conversion, storage, and utilization, while also contributing to the development of innovative materials and system architectures.
This special issue aims to provide a platform for the dissemination of recent progress in microscale heat transfer with a particular focus on renewable energy applications. We invite contributions that explore fundamental mechanisms, emerging physical insights, advanced modeling techniques, and experimental investigations relevant to micro- and nanoscale transport. Studies that bridge traditional thermal science with energy engineering, materials science, or environmental applications are especially welcome.
Topics of interest include but are not limited to:
• Microscale and nanoscale heat and mass transfer
• Renewable energy system optimization involving microscale transport
• Phase-change processes and compact thermal energy storage
• Microfluidic structures and flow control for energy applications
• Surface engineering and material design for enhanced thermal transport
• Multiscale simulation and measurement techniques for transport phenomena
Keywords
microscale heat transfer; nanoscale transport phenomena; renewable energy systems; thermal energy storage; phase change heat transfer; energy conversion technologies; microfluidics in energy applications; multiscale modelling and simulation
Published Papers