Results 21 to 30 of about 21,303 (291)

Flexible and rechargeable Zn–air batteries based on green feedstocks with 75% round-trip efficiency

open access: yesSustainable Energy & Fuels, 2017
Biomass derived flexible and rechargeable Zn–air batteries achieved a record round-trip efficiency of 75%.
Haojie Zhang   +7 more
core   +2 more sources

Round-Trip Wireless Charging Infrastructure for Heterogeneous Electric Vehicles on Highways: Modelling and Optimization

open access: yesWorld Electric Vehicle Journal, 2023
In this paper, we propose a new approach to dynamic wireless charging that allows electric vehicles to charge wirelessly while in motion in both lanes on highways.
Mohammed Bourzik   +3 more
doaj   +2 more sources

Numerical prediction of system round-trip efficiency and feasible operating conditions of small-scale solid oxide iron–air battery [PDF]

open access: yesJournal of Power Sources, 2016
A simulation model of a small-scale solid oxide iron-air battery system was developed to clarify its fundamental characteristics and feasibility from the view point of energy efficiency.
Hiroshi Iwai   +2 more
exaly   +2 more sources

Thermodynamic performance of organic rankine cycle based pumped thermal energy storage system with different working fluids [PDF]

open access: yesHeliyon
In the context of global efforts toward energy transition and carbon neutrality, thermal integrated pumped thermal energy storage (TIPTES) systems, especially those utilizing low-grade heat sources, have garnered significant attention due to their large ...
Zhongrong Liang   +6 more
doaj   +2 more sources

Round-trip efficiencies of green ammonia and green hydrogen

open access: yesNext Energy
The water electrolysis voltage of conventional green ammonia was 1.84 V. The voltage with the same energy consumption of gray ammonia was 1.50 V, which was similar to the thermoneutral voltage (1.48 V).
Yoshitsugu Kojima
doaj   +2 more sources

Vehicle-to-Grid and/or Vehicle-to-Home round-trip efficiency [PDF]

open access: yes, 2021
The battery of an electrical vehicle (EV) can be used to support the power grid (V2G, Vehicle-to-Grid) or can act as a buffer for a home promoting self-consumption (V2H, Vehicle-to-Home).
COVRIG Catalin-Felix   +1 more
core   +1 more source

Size‐Controlled Boron‐Based Bifunctional Photocathodes for High‐Efficiency Photo‐Assisted Li–O2 Batteries

open access: yesAdvanced Science, 2023
Photo‐assisted Li–O2 batteries are introduced as a promising strategy for reducing severe overpotential by directly employing photocathodes. Herein, a series of size‐controlled single‐element boron photocatalysts are prepared by the meticulous liquid ...
Ling Li   +8 more
doaj   +1 more source

Thermodynamic Performance of a Brayton Pumped Heat Energy Storage System: Influence of Internal and External Irreversibilities

open access: yesEntropy, 2021
A model for a pumped thermal energy storage system is presented. It is based on a Brayton cycle working successively as a heat pump and a heat engine. All the main irreversibility sources expected in real plants are considered: external losses arising ...
David Pérez-Gallego   +3 more
doaj   +1 more source

Numerical Modeling of the Thermal Behavior of Subsea Hydro-Pneumatic Energy Storage Accumulators Using Air and CO2

open access: yesEnergies, 2022
This paper numerically models the thermal performance of offshore hydro-pneumatic energy storage (HPES) systems composed of a subsea accumulator pre-charged with a compressed gas.
Luke Jurgen Briffa   +3 more
doaj   +1 more source

Part-Load Energy Performance Assessment of a Pumped Thermal Energy Storage System for an Energy Community

open access: yesEnergies, 2023
Research on pumped thermal energy storage (PTES) has gained considerable attention from the scientific community. Its better suitability for specific applications and the increasing need for the development of innovative energy storage technologies are ...
Emanuele Nadalon   +3 more
doaj   +1 more source

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