Topic
Heat transfer
About: Heat transfer is a research topic. Over the lifetime, 181795 publications have been published within this topic receiving 2923586 citations. The topic is also known as: heat exchange.
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TL;DR: In this paper, an ad-sorption cooling system was developed and tested and various operation procedures have been tried and experimental results showed that the heat recovery operation between two adsorption beds will increase the COP by about 25% if compared with one adsorber basic cycle system.
Abstract: An adsorption cooling system was developed and tested and various operation procedures have been tried. The experimental results show that the heat recovery operation between two adsorption beds will increase the COP by about 25% if compared with one adsorber basic cycle system. It was also proved that mass recovery is very effective for heat recovery adsorption cooling operation, which may help to obtain a COP increase of more than 10%. Theoretical analyses on the COP have been completed for various heat and mass recovery cycles, such as basic intermittent adsorption cycle, continuous two-adsorber heat recovery cycle, mass recovery cycle, mass recovery with sensible heat recovery, and mass recovery with both sensible heat and heat of adsorption recovery. The theoretical results are in good agreement with experimental values. Based upon the developed theoretical model, it is possible to predict the COP for various operation procedures of a real adsorption cooling system.
253 citations
TL;DR: In this paper, a lattice Boltzmann model for convection heat transfer in porous media is proposed, where a new distribution function is introduced to simulate the temperature field in addition to the density distribution function for the velocity field.
Abstract: A lattice Boltzmann model for convection heat transfer in porous media is proposed. In this model, a new distribution function is introduced to simulate the temperature field in addition to the density distribution function for the velocity field. The macroscopic equations for convection heat transfer in porous media are recovered from the model through the Chapman-Enskog procedure. The model is validated by several benchmark problems, and it is found that the numerical results are in good agreement with the well-documented results in the literature.
253 citations
TL;DR: In this paper, the issue of entropy generation in a tilted saturated porous cavity for laminar natural convection heat transfer is analyzed by solving numerically the mass, momentum and energy balance equations, using Darcy's law and Boussinesq-incompressible approximation.
253 citations
TL;DR: In this article, the authors used the naphthalene sublimation technique to perform mass transfer at a heated isothermal upwardfacing plate or at a cooled downward-facing plate.
253 citations
TL;DR: In this paper, the Fokker-Planck equation has been solved numerically in one spatial and two velocity dimensions in order to study thermal conduction in large temperature gradients occurring in laser-produced plasmas.
Abstract: The Fokker-Planck equation has been solved numerically in one spatial and two velocity dimensions in order to study thermal conduction in large temperature gradients occurring in laser-produced plasmas. The heat flow is an order of magnitude smaller than that predicted by the classical theory when the temperature scale length is a few electron mean free paths.
253 citations