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The Knudsen Layer in the Heat Transport Beyond the Fourier Law: Application to the Wave Propagation at Nanoscale [PDF]

open access: yesEntropy
In agreement with the second law of thermodynamics, a new theoretical model for the description of the heat transfer at nanoscale in a rigid body is derived.
Isabella Carlomagno, Antonio Sellitto
doaj   +2 more sources

A mesoscopic description of radiative heat transfer at the nanoscale [PDF]

open access: yesPhysical Review Letters, 2010
We present a formulation of the nanoscale radiative heat transfer (RHT) using concepts of mesoscopic physics. We introduce the analog of the Sharvin conductance using the quantum of thermal conductance.
Biehs, Svend-Age   +2 more
core   +5 more sources

Heat transfer in metallic nanometre-sized gaps [PDF]

open access: yesNature Communications
Heat transfer in nanoscale gaps is of key relevance for a variety of technologies. Recent experiments have reported contradictory results shedding doubts about the fundamental mechanisms for heat exchange when bodies are separated by nanometre-sized gaps.
Rubén López-Nebreda   +11 more
doaj   +2 more sources

The Knudsen Layer in Modeling the Heat Transfer at Nanoscale: Bulk and Wall Contributions to the Local Heat Flux [PDF]

open access: yesEntropy
Starting from the observation that the influence of the heat carriers’ boundary scattering on the heat flux is mainly felt in the zone near the system’s boundary, the characteristic dimension of which is of the order of the mean-free path of the heat ...
Carmelo Filippo Munafò   +2 more
doaj   +2 more sources

Thermal Insulation Performance of Aerogel Nano-Porous Materials: Characterization and Test Methods

open access: yesGels, 2023
Due to the extremely high porosity and extremely low density of nano-porous thermal insulation materials, the characteristic size of the pores inside the materials and the characteristic size of the solid skeleton structure are on the nanometer scale ...
Fengfei Lou   +4 more
doaj   +1 more source

Pico-Watt Scanning Thermal Microscopy for Thermal Energy Transport Investigation in Atomic Materials

open access: yesNanomaterials, 2022
The thermophysical properties at the nanoscale are key characteristics that determine the operation of nanoscale devices. Additionally, it is important to measure and verify the thermal transfer characteristics with a few nanometer or atomic-scale ...
Seunghoe Koo, Jaehee Park, Kyeongtae Kim
doaj   +1 more source

A Novel Pressure-Controlled Molecular Dynamics Simulation Method for Nanoscale Boiling Heat Transfer

open access: yesEnergies, 2023
Pool boiling, enabling remarkable phase-change heat transfer, has elicited increasing attention due to its ubiquitous applications in solar thermal power stations.
Cong Wang   +4 more
doaj   +1 more source

A review on heat transfer in nanoporous silica aerogel insulation materials and its modeling

open access: yesEnergy Storage and Saving, 2022
Silica aerogels are widely used in many fields for thermal insulation, such as building insulation, electric power energy, energy storage systems, and high-temperature thermal protection due to their excellent insulation performance.
Chuan-Yong Zhu   +4 more
doaj   +1 more source

Micro/Nanoscale surface modifications to combat heat exchanger fouling

open access: yesChemical Engineering Journal Advances, 2023
Fouling is a ubiquitous phenomenon occurring in heat transfer devices that inhibits the effective passage of thermal energy, leading to energy and economic losses.
Amit Goswami   +2 more
doaj   +1 more source

Impacts of process-induced porosity on material properties of copper made by binder jetting additive manufacturing

open access: yesMaterials & Design, 2019
Binder Jetting (BJ) is an efficient, economical, and scalable Additive Manufacturing (AM) technology that can be used in fabricating parts made of reflective and conductive materials like copper, which have applications in advanced thermal and electrical
Ashwath Yegyan Kumar   +4 more
doaj   +1 more source

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