Results 41 to 50 of about 4,049 (194)

Introduction of a High-Level, Application Based Sizing Methodology for Carnot Batteries [PDF]

open access: yes, 2020
Due to the ever increasing share of renewable energy sources (RES) in the energy mix, large-scale energy storage systems are considered essential to ensure the security of supply in energy systems. In recent years, Carnot batteries have been introduced as an alternative grid-scale electrical storage system. In this storage concept, electrical energy is
Tassenoy, Robin   +4 more
openaire   +2 more sources

Multi-objective optimization and design of a Carnot Battery for energy storage applications

open access: yesEnergy Conversion and Management: X
This study presents a numerical design and optimization of a Heat Pump-Organic Rankine Cycle based Carnot Battery, focusing on determining the optimal nominal operating conditions for selecting key components for the construction of a small-scale test ...
Ivo Silva   +2 more
doaj   +1 more source

Most energetic passive states [PDF]

open access: yes, 2015
Passive states are defined as those states that do not allow for work extraction in a cyclic (unitary) process. Within the set of passive states, thermal states are the most stable ones: they maximize the entropy for a given energy, and similarly they ...
Acín, Antonio   +5 more
core   +3 more sources

Techno‐Economic and Life Cycle Assessment of a Nanofluid‐Based Concentrated PV/T–TEG Hybrid System With Spectral Filtering

open access: yesEnergy Science &Engineering, Volume 14, Issue 4, Page 2003-2023, April 2026.
A novel cascade nanofluid‐based PV/T–TEG hybrid system (CS4) achieves 81.1% thermal and 18.75% exergy efficiency while cutting CO₂ emissions by 7.8 tons year⁻¹. The system delivers superior energy performance, economic savings, and environmental benefits, offering a sustainable pathway for next‐generation solar energy applications.
Abdelhak Lekbir   +4 more
wiley   +1 more source

Charging-free electrochemical system for harvesting low-grade thermal energy [PDF]

open access: yes, 2014
Efficient and low-cost systems are needed to harvest the tremendous amount of energy stored in low-grade heat sources (
Chen, Gang   +8 more
core   +1 more source

High Value Utilization of Waste Biomass Carbon for Rapid CO2 Electroreduction and Stable Sodium‐Ion Storage

open access: yesCarbon Neutralization, Volume 5, Issue 2, March 2026.
A strategy for the combined use of energy materials is proposed, in which bamboo‐derived carbon is simultaneously applied to DC‐SOFC and SIB. The regulating mechanisms of carbon microstructure and its strengthening effect on electrochemical performance were elucidated by comparing the fast Joule heating and traditional tube furnace heating processes ...
Ziyi Zhu   +7 more
wiley   +1 more source

Overview of free-piston Stirling engine technology for space power application [PDF]

open access: yes, 1987
An overview is presented of free-piston Stirling engine activities, directed toward space power applications. One of the major elements of the program is the development of advanced power conversion.
Slaby, Jack G.
core   +1 more source

Quantum thermodynamics with local control [PDF]

open access: yes, 2018
We investigate the limitations that emerge in thermodynamic tasks as a result of having local control only over the components of a thermal machine.
Eisert, Jens   +3 more
core   +1 more source

Numerical Simulation and Synthesized Material Ranking for High‐Temperature Thermoelectric Power Generation

open access: yesEnergy Technology, Volume 14, Issue 3, March 2026.
The graphical abstract presents thermoelectric power generation driven by a temperature gradient (ΔT), highlighting electrical conductivity (σ), Seebeck coefficient (S), and thermal conductivity (κ). Material performance is compared across temperature regimes using experimental data and numerical modeling, identifying holmium–antimony–tellurium (Ho–Sb ...
Christian Idogho   +4 more
wiley   +1 more source

Synthesis of α‐Pentafluorosulfanylated‐β2,3‐Amino Esters

open access: yesChemistryEurope, Volume 4, Issue 2, February 2026.
De novo α‐SF5‐β2,3‐amino esters are now accessible through a straightforward aza‐Michael reaction using a series of newly developed (E)‐α‐SF5‐α,β‐unsaturated esters. Two new, highly functionalized, contiguous tertiary stereocenters are formed with diastereodivergence governed by the choice of solvent and/or base.
Thi Mo Nguyen   +5 more
wiley   +1 more source

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