Results 21 to 30 of about 214,049 (180)

A switchable pH-differential unitized regenerative fuel cell with high performance [PDF]

open access: yes, 2016
Regenerative fuel cells are a potential candidate for future energy storage, but their applications are limited by the high cost and poor round-trip efficiency.
Altmann   +59 more
core   +2 more sources

Hydrogen Round Trip Efficiency

open access: yesFrontiers of Mechatronical Engineering, 2020
<p>The hydrogen economy is a glimpse into the future economic structure of energy. Hydrogen can be used as a power medium, and a typical way of using hydrogen is the round trip, defined as a process in which electricity becomes hydrogen and then returns to electricity form.
openaire   +2 more sources

Feedback-optimized parallel tempering Monte Carlo [PDF]

open access: yes, 2006
We introduce an algorithm to systematically improve the efficiency of parallel tempering Monte Carlo simulations by optimizing the simulated temperature set.
Alder S   +15 more
core   +1 more source

Intramode and Fermi relaxation in CO2, their influence on multiple-pass, short-pulse energy extraction [PDF]

open access: yes, 1987
Analytical, experimental and numerical results concerning the influence of intramode and Fermi relaxation on multiple-pass, nanosecond-pulse energy extraction are presented. Multiple-pass energy extraction experiments show satisfactory agreement with the
Haselhoff, E.H.   +2 more
core   +3 more sources

Preliminary prospects of a Carnot-battery based on a supercritical CO2 Brayton cycle

open access: yesActa Polytechnica, 2021
As a part of the change towards a higher usage of renewable energy sources, which naturally deliver the energy intermittently, the need for energy storage systems is increasing. For the compensation of the disturbance in power production due to inter-day
Karin Rindt   +2 more
doaj   +1 more source

Adaptive Coding and Modulation Performance over Nonlinear Mobile Satellite Channels [PDF]

open access: yesAUT Journal of Modeling and Simulation, 2020
Mobile satellite communication experiences various channel state conditions. These channel impairments degrade overall system reliability and bandwidth efficiency.
mahdis jalali   +2 more
doaj   +1 more source

Performance of a hybrid battery energy storage system

open access: yesEnergy Reports, 2022
The use of energy storage systems is inevitable in a power grid dominated by renewable generators. This paper presents a performance overview of a 100 kW/270 kWh, grid-connected, hybrid battery energy storage system.
Andrei Dascalu   +3 more
doaj   +1 more source

Transcritical Carbon Dioxide Charge-Discharge Energy Storage with Integration of Solar Energy [PDF]

open access: yes, 2019
New and improved energy storage technologies are required to overcome non-dispatchability, which is the main challenge for the successful integration of large shares of renewable energy within energy supply systems.
Becerra Villanueva, José Antonio   +4 more
core   +2 more sources

Round-trip efficiency of fast demand response in a large commercial air conditioner [PDF]

open access: yesEnergy and Buildings, 2015
Abstract Air conditioning (AC) of large commercial buildings represents an attractive target for many different forms of demand response (DR) including DR for ancillary services (AS) such as frequency regulation. The operating cost of such DR is typically discussed in terms of occupant discomfort.
Beil, I., Hiskens, I.A., Backhaus, S.
openaire   +1 more source

Transport energy consumption in mountainous roads. A comparative case study for internal combustion engines and electric vehicles in Andorra [PDF]

open access: yes, 2015
This paper analyses transport energy consumption of conventional and electric vehicles in mountainous roads. A standard round trip in Andorra has been modelled in order to characterise vehicle dynamics in hilly regions.
Jover Comas, Eric   +2 more
core   +2 more sources

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