Results 21 to 30 of about 53,363 (198)
The design of mini/micro heat exchangers: A world of opportunities and constraints [PDF]
, 2018 Micro heat exchangers and heat sinks broadened their use in many technological fields during the last two decades. The reduction of the dimensions of the channels allows to obtain ultra-compact heat exchangers characterized by higher surface-to-volume ...
Gian Luca Morini +5 more
core +1 more source
Energies, 2022 The non-stationary heat transfer inside a cylindrical channel of a shafted screw conveyor, electrically heated, and filled with a moving biomass was analyzed.
Stanisław Ledakowicz, Olexa Piddubniak
doaj +1 more source
Non-Fourier Heat Transfer with Phonons and Electrons in a Circular Thin Layer Surrounding a Hot Nanodevice [PDF]
Entropy, 2015 A nonlocal model for heat transfer with phonons and electrons is applied to infer the steady-state radial temperature profile in a circular layer surrounding an inner hot component. Such a profile, following by the numerical solution of the heat equation, predicts that the temperature behaves in an anomalous way, since for radial distances from the ...
Vito Cimmelli +2 more
openaire +4 more sources
Journal of Physics Communications, 2018 Efficient and optimal energy transport is one of the present challenges in the physics of many different devices. In this context, the dynamic effective thermal diffusivity of a fluid with a non-Fourier heat conduction law is examined. Considering the simplest description for heat conduction beyond Fourier's law (the Cattaneo-Vernotte equation), an ...
J A del Río +2 more
openaire +1 more source
Non-Fourier heat conduction in oil-in-water emulsions [PDF]
, 2019 Emulsions have widely been used in various application, e.g. in energy system as a potential second refrigerant. However, there is a lack of comprehensive study on extraordinary effective thermal conductivity enhancement in the oil-in-water (O/W ...
Zhang, D +5 more
core +1 more source
Convection Heat Transfer and Flow Calculations Suitable for Electric Machines Thermal Models [PDF]
, 2008 This paper deals with the formulations used to predict convection cooling and flow in electric machines. Empirical dimensionless analysis formulations are used to calculate convection heat transfer.
D. A. STATON +2 more
core +1 more source
Non-Fourier heat transfer at small scales of time and space
International Journal of Heat and Mass Transfer, 2020 Heat transfer at small spatial and temporal scales presents differences compared to larger scales, where the Fourier law applies with very good representativeness. The best-known deviation concerns the behavior of materials with a very small time constant, where the Fourier law leads to a paradox.
openaire +4 more sources
Case Studies in Thermal Engineering, 2021 Non-Newtonian constitutive equations and models for hybrid particles are simultaneously coupled with conservation laws. The energy equation is derived under non-Fourier heat flux condition.
M. Nawaz, M. Adil Sadiq
doaj +1 more source
Exact and Analytic-Numerical Solutions of Lagging Models of Heat Transfer in a Semi-Infinite Medium
Abstract and Applied Analysis, 2013 Different non-Fourier models of heat conduction have been considered in recent years, in a growing area of applications, to model microscale and ultrafast, transient, nonequilibrium responses in heat and mass transfer.
M. A. Castro +3 more
doaj +1 more source
Results in Engineering, 2023 Hyperbolic heat transfer equation considering a laser heat source is analytically investigated using Laplace transform method to study the temperature distribution in the central part of the tibia bone tissue.
Nima Katirachi
doaj +1 more source