Results 21 to 30 of about 1,010,641 (341)

Economic design of artificial lighting plant factory based on biomass conversion efficiency of Okhotsk vegetables

open access: yesNihon Kikai Gakkai ronbunshu, 2021
Since plants with a high biomass conversion efficiency of light energy consume less energy and require shorter cultivation periods, it is expected that plant factories can have more output with less energy.
Ryota YORIFUJI, Shin’ya OBARA
doaj   +1 more source

Energy conversion efficiency of electrical exploding foil accelerators

open access: yesAIP Advances, 2021
We evaluate the energy conversion efficiency of an electrical exploding foil accelerator that accelerates a thin dielectric foil (called the flyer) to more than 1 km/s, which is propelled by electrically exploded bridge material. The effective flyer mass
D. Ichihara   +3 more
doaj   +1 more source

Research status of replacement gases for SF6 in power industry

open access: yesAIP Advances, 2020
SF6 is widely used in the industrial field due to its stable structure and excellent properties. It is mainly used in electrical insulation equipment. Due to the boiling point of SF6, its use in extremely cold regions has been limited.
Shuangshuang Tian   +7 more
doaj   +1 more source

Energy Conversion Efficiency of the Bulk Photovoltaic Effect

open access: yesPRX Energy, 2023
The bulk photovoltaic effect (BPVE) leads to directed photocurrents and photovoltages in bulk materials. Unlike photovoltages in p-n junction solar cells that are limited by carrier recombination to values below the band-gap energy of the absorbing ...
Andreas Pusch   +3 more
doaj   +1 more source

A Marginal Contribution Theory-Based Energy Efficiency Contribution Analysis for Integrated Energy System

open access: yesFrontiers in Energy Research, 2021
The energy efficiency analysis is a prerequisite for the construction of the integrated energy system (IES). In this study, a novel energy efficiency analysis method is proposed considering different energy subsystems in the IES.
Shihai Yang   +6 more
doaj   +1 more source

Exceeding the Manley-Rowe quantum efficiency limit in an optically pumped THz amplifier [PDF]

open access: yes, 2006
Using a microscopic theory based on the Maxwell-semiconductor Bloch equations, we investigate the possibility of an optically-assisted electrically-driven THz quantum cascade laser. Whereas in optical conversion schemes the power conversion efficiency is
Chow, Weng W.   +2 more
core   +2 more sources

Silver/Polypyrrole-Functionalized Polyurethane Foam Embedded Phase Change Materials for Thermal Energy Harvesting

open access: yesNanomaterials, 2021
Conversion of solar energy into thermal energy stored in phase change materials (PCMs) can effectively relieve the energy dilemma and improve energy utilization efficiency.
Dongli Fan   +7 more
doaj   +1 more source

Surface-emitting circular DFB, disk-, and ring-Bragg resonator lasers with chirped gratings. III: gain saturation effects and above-threshold analysis [PDF]

open access: yes, 2009
As Part III of this series, this paper focuses on an above-threshold modal analysis which includes gain saturation effects in the surface-emitting chirped circular grating lasers. We derive an exact energy relation which states that, in steady state, the
Sun, Xiankai, Yariv, Amnon
core   +1 more source

Effect of the pitch angle and of the number of blades on depression created under impellers

open access: yesMATEC Web of Conferences, 2017
This work presents a set of experiments concerning the behavior of several types of impellers regarding the depression formatted and operating in a specific range of rotations.
Băbuţanu Corina, Mândrea Lucian
doaj   +1 more source

Dynamic Characteristics of Downhole Bit Load and Analysis of Conversion Efficiency of Drill String Vibration Energy

open access: yesEnergies, 2021
The longitudinal vibration of the drill pipe contains considerable energy which can be used to improve the rock-breaking efficiency during drilling. It is very important to the development of drilling speed-up tools to have a comprehensive understanding ...
Yuqiang Xu   +2 more
doaj   +1 more source

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