Guest Editor(s)
Prof. Suoying He
Email: s.he@sdu.edu.cn
Affiliation: School of Nuclear Science, Energy and Power Engineering, Shandong University, Jinan, China
Homepage:
Research Interests: theory and methods for enhancing heat and mass transfer (methods to enhance heat and mass transfer in nozzle/fill type evaporative cooling systems, key technologies and equipment for energy-efficient heat exchange), theory and technology for high-efficiency energy conversion (energy-saving and water-saving optimization of cooling towers, key technologies for seawater cooling towers, combined wet and dry cooling technology, energy-saving technology for thermal equipment), low-carbon energy and energy-saving storage technologies (cooling and cleaning technology for photovoltaic modules, solar energy + heat pump combined cooling, heating and power supply technology, multi-energy complementarity and advanced energy storage technologies)

Assoc. Prof. Xiaoyun Xie
Email: xiexiaoyun@tsinghua.edu.cn
Affiliation: Department of Building Science and Technology, Tsinghua University, Beijing, China
Homepage:
Research Interests: evaporative cooling technologies, data center cooling and waste heat recovery, absorption heat exchangers and absorption heat pumps

Dr. Yuanshen Lu
Email: y.lu7@uq.edu.au
Affiliation: School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Australia
Homepage:
Research Interests: energy conversion and thermo-fluids in energy systems, particularly in thermodynamic cycles, at both system and single component/mechanism levels including supercritical CO2 power cycles, heat exchangers, cooling towers, and heat pumps

Prof. Dr. Muzaffar Ali
Email: muzaffar.ali@uettaxila.edu.pk
Affiliation: Department of Energy Engineering, University of Engineering and Technology, Taxila, Pakistan
Homepage:
Research Interests: solar absorption systems, solar desiccant cooling systems, m-cycle cooling systems, energy modeling and simulations, evaporative cooling, hvac systems, solar collectors, nanofluids

Summary
This Special Issue is dedicated to recent advances in fluid mechanics, heat transfer, and thermodynamic analysis applied to renewable energy systems and modern heating, ventilation, and air-conditioning (HVAC) technologies. In line with the scope of Fluid Dynamics & Materials Processing (FDMP), it emphasizes fundamental fluid-dynamic mechanisms, multiphase and convective transport phenomena, and advanced modeling strategies that underpin next-generation sustainable energy and thermal management systems. Sustainable energy solutions often require optimal designs, the selection of proper materials, energy efficiency and enhanced fluid-driven thermal performance. Therefore, this special issue will explore relevant topics and applications, including evaporative cooling, hybrid cooling systems, and advanced heat pumps integrated with solar energy technologies. Numerical, experimental, and transient simulation studies related to cooling tower performance (dry, wet, and hybrid), thermal energy storage techniques, system-level design optimization and performance analysis studies are encouraged.
Topics of interest include but are not limited to:
· Multiphase flows in renewable energy systems
· Energy-efficient HVAC systems
· PV cooling and cleaning
· Efficient utilization of PV/T
· Air source heat pumps
· Multi-source energy supply systems
· Evaporative cooling
· Thermal management of power plants
· Modeling of dry/wet/hybrid cooling systems
This special issue aims to bridge fundamental research with industrial applications, fostering innovations in sustainable energy and HVAC systems. Researchers are invited to submit original research, review articles, and their case studies.
Keywords
multiphase flows, renewable energy systems, hVAC systems, solar PV & PV/T, thermal energy storage