Results 51 to 60 of about 4,708 (200)
This article provides a comprehensive review of loss mechanisms in the generation stage of energy systems, covering fossil, nuclear, and renewable technologies. It examines their environmental and operational implications and shows how overlooking generation losses distorts efficiency assessments.
Pooya Parvizi +4 more
wiley +1 more source
In research articles and patents several methods have been proposed for the extraction of zero-point energy from the vacuum. None of the proposals have been reliably demonstrated, yet they remain largely unchallenged.
Abbott +19 more
core +1 more source
Introduction of a High-Level, Application Based Sizing Methodology for Carnot Batteries [PDF]
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
Heat‐pump charging of Carnot batteries with zeotropic large temperature glide CO2–alkane mixtures enables charging from ambient to ≈398.15 K with improved heat‐exchanger temperature matching at moderate pressure ratios. The highest COP occurs near xCO2 ≈ 0.15, whereas cost and throttling losses rise monotonically with CO2 content; butane isomers ...
Majid Zarif Sabbaghnia, Burak Atakan
wiley +1 more source
Bluff your way in the second law of thermodynamics [PDF]
The aim of this article is to analyze the relation between the second law of thermodynamics and the so-called arrow of time. For this purpose, a number of different aspects in this arrow of time are distinguished, in particular those of time-(a)symmetry ...
Uffink, Jos
core +6 more sources
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
Most energetic passive states [PDF]
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
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
The use of thermal energy storage (TES) technologies, as means to provide dispatchability to thermally driven solar power production, has long stood as the main argument for the interest and potential competitiveness of Concentrated Solar Power (CSP ...
Pedro Horta +4 more
doaj +1 more source
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

