Results 1 to 10 of about 14,058 (159)
Analysis of temperature glide matching of heat pumps with zeotropic working fluid mixtures for different temperature glides [PDF]
Energy, 2018 Abstract The present study demonstrates the optimization of a heat pump for an application with a large temperature glide on the sink side and a smaller temperature glide on the source side. The study includes a numerical simulation of a heat pump cycle for binary mixtures based on a list of 14 natural refrigerants.
Stefano Cignitti +2 more
exaly +2 more sources
Resolving intrinsic dislocation structure in perovskite crystals using pulsed electron beam with atomic resolution [PDF]
Nature CommunicationsPlasticity is critical for processing semiconductors and ceramics and advancing flexible, deformable electronics. Perovskites like CsPbX3 (X = Cl, Br, I) and SrTiO3 exhibit remarkable room-temperature plasticity through {110} dislocations, yet their ...
Xiaocui Li +12 more
doaj +2 more sources
The Role of Glide during Creep of Copper at Low Temperatures [PDF]
Metals, 2018 Copper canister will be used in Scandinavia for final storage of spent nuclear fuel. The copper will be exposed to temperatures of up to 100 °C. The creep mechanism at near ambient temperatures has been assumed to be glide of dislocations, but this has never been verified for copper or other materials.
Arash Hosseinzadeh Delandar +2 more
exaly +3 more sources
A low-temperature glide cycle for pumped thermal energy storage
Journal of Energy Storage, 2021 Pumped thermal energy storage is seen as a possible alternative to pumped-hydro schemes for storing electricity at large scale and facilitating increased integration of renewable sources. This paper presents a novel form of pumped thermal energy storage in which the thermodynamic cycle exploits the temperature glide exhibited by zeotropic mixtures. The
Pau Farres Antunez +2 more
exaly +2 more sources
On low temperature glide of dissociated 〈1 1 0〉 dislocations in strontium titanate
Philosophical Magazine, 2018 An elastic interaction model is presented to quantify low temperature plasticity of SrTiO3 via glide of dissociated < 110 >{110} screw dislocations. Because < 110 > dislocations are dissociated, their glide, controlled by the kink-pair mechanism at T{110} glide mechanism, from simultaneous nucleation of two kink-pairs along both partials at low stress,
Sebastian Ritterbex +2 more
exaly +5 more sources
EnergiesSeveral theoretical studies have predicted that refrigerant mixtures with glides of more than 20 K can yield COP improvements in heat pumps for operating conditions where the temperature difference between the heat source and heat sink is large, but ...
Leon P. M. Brendel +5 more
doaj +3 more sources
The core structure of screw dislocations with [001] Burgers vector in Mg$_2$SiO$_4$ olivine
Comptes Rendus. Physique, 2021 In this study, we report atomistic calculations of the core structure of screw dislocations with [001] Burgers vector in Mg$_{{2}}$SiO$_{{4}}$ olivine.
Mahendran, Srinivasan +2 more
doaj +1 more source
Energies, 2022 This paper is an introduction to the cycle proposed by the authors related to research directions concerning the problems of condensation of zeotropic refrigerant mixtures.
Marcin Kruzel +4 more
doaj +1 more source
Laser-Treated Steel Surfaces Gliding on Snow at Different Temperatures
Materials, 2023 With the goal of substituting a hard metallic material for the soft Ultra High Molecular Weight Polyethylene (UHMWPE) presently used to make the bases of skis for alpine skiing, we used two non-thermodynamic equilibrium surface treatments with ultra-short (7–8 ps) laser pulses to modify the surface of square plates (50 × 50 mm2) made of austenitic ...
Ettore Maggiore +6 more
openaire +3 more sources
Energies, 2022 Ammonia/water absorption chillers are driven by low-grade heat and cover wide refrigeration temperatures. This paper analyses single-stage ammonia/water absorption chillers. A numerical model was developed based on the heat exchanger performance.
Xuan Tao +2 more
doaj +1 more source