Heat performance investigation of phase change materials for the cooling array system on vehicles

Ren, Xueming; Nie, Hong; Zhang, M.; Nikitchenko, Yu. A.; Tikhonovets, A. V.

doi:10.1016/j.applthermaleng.2020.115115

Cited by 8 publications

(2 citation statements)

References 44 publications

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“…⇀ Q rad represents the presence of outward thermal radiation on the upper surface of the system, which is defined by the following boundary condition equation [56]:…”

Section: Heat Transfer Mathematical Modelmentioning

confidence: 99%

“…The outer surface is subjected to aerodynamic loads, while the two sides and bottom are situated within the aircraft with minimal gap areas where convection effects can be neglected. Therefore, both sides and the bottom of the system are set as adiabatic boundary conditions [56]. Furthermore, there was outward thermal radiation on the top surface with an emissivity (ε) value of 0.85.…”

Section: Numerical Simulation Programmentioning

confidence: 99%

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Structure Design and Heat Transfer Performance Analysis of a Novel Composite Phase Change Active Cooling Channel Wall for Hypersonic Aircraft

Li,

Zhao,

et al. 2024

Micromachines

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Efficient and stable heat dissipation structure is crucial for improving the convective heat transfer performance of thermal protection systems (TPSs) for hypersonic aircraft. However, the heat dissipation wall of the current TPS is limited by a single material and structure, inefficiently dissipating the large amount of accumulated heat generated during the high-speed maneuvering flight of hypersonic aircraft. Here, a convection cooling channel structure of TPS is proposed, which is an innovative multi-level structure inspired by the natural honeycomb. An active cooling channel (PCM-HC) is designed by using a variable-density topology optimization method and filled with phase change material (PCM). Numerical simulations are used to investigate the thermal performance of the PCM-HC wall, focusing on the influence of PCM properties, structural geometric parameters, and PCM types on heat transfer characteristics. The results demonstrate that the honeycomb-like convection cooling channel wall, combined with PCM latent heat of phase change, exhibits superior heat dissipation capability. With a heat flux input of 50 kW/m2, the maximum temperature on the inner wall of PCM-HC is reduced by 12 K to 20 K. Different PCMs have opposing effects on heat transfer performance due to their distinct thermophysical properties. This work can provide a theoretical basis for the design of high-efficiency cooling channel, improving the heat dissipation performance in the TPS of hypersonic aircraft.

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“…⇀ Q rad represents the presence of outward thermal radiation on the upper surface of the system, which is defined by the following boundary condition equation [56]:…”

Section: Heat Transfer Mathematical Modelmentioning

confidence: 99%

Section: Numerical Simulation Programmentioning

confidence: 99%

Structure Design and Heat Transfer Performance Analysis of a Novel Composite Phase Change Active Cooling Channel Wall for Hypersonic Aircraft

Li,

Zhao,

et al. 2024

Micromachines

View full text Add to dashboard Cite

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Thermal Metamaterials for Temperature Maintenance: From Advances in Heat Conduction to Future Convection Prospects

Zhou

2024

Diffusionics

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Maintaining temperature is crucial in both daily life and industrial settings, ensuring human comfort and device functionality. In the quest for energy conservation and emission reduction, several contemporary passive temperature control technologies have emerged, including phase change temperature control, shape memory alloys, solar thermal utilization, sky radiation cooling, and heat pipe systems. However, there is a pressing need for more quantitative methods to further optimize temperature maintenance. With advancements in theoretical thermotics and the emergence of thermal metamaterials, it is clear that temperature fields can be precisely manipulated by fine-tuning thermal and structural parameters. This chapter introduces three innovative devices: the energy-free thermostat, the negative-energy thermostat, and the multi-temperature maintenance container. All are grounded in the principles of thermal metamaterials and primarily operate under conduction heat transfer conditions. When compared with traditional technologies, the unparalleled efficacy of thermal metamaterials in temperature management is evident. Moreover, brief prospects present strategies to improve temperature maintenance under convection heat transfer, thus expanding the application spectrum of thermal metamaterials. This chapter concludes by spotlighting the evolution and interplay of the aforementioned three devices, marking the progression of thermal metamaterials from theoretical ideas to tangible engineering solutions. These insights not only bridge the gap between applied physics and engineering but also underscore the practical potential of thermal metamaterials.

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Advances in spacecraft thermal control

Consolo

Boetcher

2023

Advances in Heat Transfer

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Heat performance investigation of phase change materials for the cooling array system on vehicles

Cited by 8 publications

References 44 publications

Structure Design and Heat Transfer Performance Analysis of a Novel Composite Phase Change Active Cooling Channel Wall for Hypersonic Aircraft

Structure Design and Heat Transfer Performance Analysis of a Novel Composite Phase Change Active Cooling Channel Wall for Hypersonic Aircraft

Thermal Metamaterials for Temperature Maintenance: From Advances in Heat Conduction to Future Convection Prospects

Advances in spacecraft thermal control

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