using a stochastic force. The results show the size dependence of the interface thermal conductance and the effect of electron–phonon coupling on the interface thermal conductance. To understand the mechanism…
deriving physically meaningful insights. Towards solving this problem, we present a new approach to making IAPs that are specifically optimized to accurately describe thermal vibrations/phonons. The approach enables nearly exact…
a ceramic pump that can operate at 1,400 ˚C, several hundred degrees hotter than existing heat transfer systems, opening up significant new possibilities for energy storage……….. Read more here: https://www.technologyreview.com/s/609093/ceramic-pump-that-takes-the-heat-promises-cheap-efficient-grid-storage/…
of temperature, spatial coordinate, and local mixture composition, by means of the unified Maxwell–Eucken–Bruggeman model, accounting for random particle distribution and inter-particle interaction. Results indicate that the combined thermal resistance…
dynamics; NMD: Normal-mode dynamics; PDL: Propagon, diffuson, locon; PGM: Phonon gas model; PR: Participation ratio; SCLD: Supercell lattice dynamics; SED: Spectral energy density; TDTR: Time-domain thermoreflectance; VCA: Virtual crystal approximation;…
more than 1,400 degrees Celsius (1,673 Kelvin) can transfer high temperature liquids such as molten tin, enabling a new generation of energy conversion and storage systems………. Read more here: https://www.rdworldonline.com/ceramic-pump-moves-molten-metal-at-a-record-1400-degrees-celsius/…
range of temperatures. Here, we note five key applications of research in thermal energy that could help make significant progress towards mitigating climate change at the necessary scale and urgency….
Carlos (or Charley) began his M.S. degree in Aeronautics and Astronautics Engineering in Fall 2022. Originally from Puerto Rico, he completetd a B.S. in Mechanical Engineering at the University of…
technical challenges, it is important to build a simplified, approximate, yet complete performance and cost model early on. Many cost factors rely critically on the chemical compatibility of a storage…
supercritical carbon dioxide (sCO2) recompression cycles, instead of using conventional (such as subcritical steam Rankine) cycles with inlet temperatures below 823 kelvin1,2,3, the relative heat-to-electricity conversion efficiency may be increased…