Results 11 to 20 of about 245,558 (286)

Thermal performance of refrigerant pump-driven free cooling system for data centers with mixed refrigerant

open access: yesXi'an Gongcheng Daxue xuebao, 2022
Refrigerant pump-driven free cooling technology can effectively reduce data center cooling energy consumption. But for a pure refrigerant system, it is difficult to meet the need of dynamic high efficient operation facing both the large temperature ...
ZHOU Feng   +3 more
doaj   +1 more source

Opportunities regarding the use of technologies of energy recovery from sewage sludge

open access: yesSN Applied Sciences, 2021
Based on the global need to efficiently eliminate highly produced amounts of sewage sludge, alternative technologies are required to be practically developed.
Anca Maria Zaharioiu   +5 more
doaj   +1 more source

Numerical Study on Flow-Melt Characteristics of Ice Slurry in Horizontal Straight Pipe with a Local Large Heat Flux Segment

open access: yesEnergies, 2023
Ice slurry is a high energy density coolant with excellent flow, phase change, and thermophysical properties. In order to investigate the recovery of ice slurry flowing through a local large heat flux segment, a 3D Eulerian-Eulerian model based on the ...
Fushou Xie, Wan Guo, Yuhao Zhu
doaj   +1 more source

Optimized design of the ion optics based on the over-perveance characteristics of the beam current

open access: yesAIP Advances, 2023
To illustrate the erosion mechanism of the edge aperture by high-energy ions, a three-dimension simulation model was established, and a particle-in-cell method was applied in tracking the hitting processes as well as a Monte Carlo collision method was ...
Juanjuan Chen   +5 more
doaj   +1 more source

Numerical Study on Pool Film Boiling of Liquid Hydrogen over Horizontal Cylinders

open access: yesEnergies, 2022
Due to the low boiling point of hydrogen, the boiling phenomenon is usually encountered in the applications of liquid hydrogen. The underlying mechanism as well as the physical performance of film boiling over horizontal cylinders are not yet fully ...
Jiaojiao Wang, Yanzhong Li, Lei Wang
doaj   +1 more source

Transient Numerical Model on the Design Optimization of the Adiabatic Section Length for the Pulsating Heat Pipe

open access: yesApplied Sciences, 2021
In the application of pulsating heat pipes (PHPs), the lengths of the adiabatic sections are usually determined by the distance between the heat source and the heat sink, and have important effects on the performance of PHPs.
Kangli Bao   +5 more
doaj   +1 more source

Cryogenic technology for infrared detection in space

open access: yesScientific Reports, 2022
Cryogenic technology has been developed cooperatively with infrared detection technology, which is of great significance for the development of space science and technology.
Yinan Han, Ankuo Zhang
doaj   +1 more source

Cryogenic Stress-Driven Grain Growth Observed via Microcompression with in situ Electron Backscatter Diffraction [PDF]

open access: yes, 2020
The deformation of materials at cryogenic temperature is of interest for space, arctic, and fundamental science applications. In this work, a custom-built cooling system attached to a commercial picoindenter was used for in situ cryogenic ...
Bair, JL   +3 more
core  

Effects of Surface Waviness on the Nonlinear Vibration of Gas Lubricated Bearing-Rotor System

open access: yesShock and Vibration, 2018
This paper presents the effects of the surface waviness on the nonlinear dynamic performance of a gas bearing-rotor system. The coupled vibration with the elastomer is taken into consideration to fit the actual engineering application. The effects of the
Jian Li   +3 more
doaj   +1 more source

Structural and biochemical insights into PsEst3, a new GHSR-type esterase obtained from Paenibacillus sp. R4

open access: yesIUCrJ, 2023
PsEst3, a psychrophilic esterase obtained from Paenibacillus sp. R4, which was isolated from the permafrost of Alaska, exhibits relatively high activity at low temperatures. Here, crystal structures of PsEst3 complexed with various ligands were generated
Jonghyeon Son   +6 more
doaj   +1 more source

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