Results 71 to 80 of about 1,224 (231)

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

open access: yesCarbon Energy, EarlyView.
ABSTRACT Graphene has garnered significant attention as a promising material with great potential for contributing to sustainable energy initiatives, such as RE100 (100% renewable energy initiative) and CF100 (100% carbon‐free initiative). This review aims to explore the potential of graphene for advancing renewable energy applications by highlighting
Niraj Kumar   +3 more
wiley   +1 more source

Knowledge graph-based intelligent control systems for real-time machine tool optimization

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing
The stability of computer numerical control machine tool operation directly affects production efficiency and quality. However, there are some uncertain factors concerning with environment in which the control effect of these tools is not ideal.
Hailong YANG, Jun YAO, Baorui DU
doaj   +1 more source

Thermophysical Properties of Working Fluid and Heat Transfer in a Hydrogen Combustion Engine

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2005
A larger burning velocity and a shorter quenching distance for hydrogen as compared with hydrocarbons bring a higher degree of constant volume and a larger cooling loss from burning gas to the combustion chamber wall in internal combustion engines.
SHUDO, Toshio, OKA, Hiroko
openaire   +2 more sources

New Zeolitic Imidazolate Framework‐Derived N‐Doped Carbon LiCl Composites for Sorption Thermal Batteries Utilizing Solar Energy

open access: yesCarbon Energy, EarlyView.
New hierarchical ZIF‐derived nitrogen‐doped carbons (ZDCs) impregnated with LiCl are promising materials for sorption thermal batteries utilizing solar energy. This study examines the structural properties of ZDCs, the effect of LiCl loading, the enhancement of hydrothermal stability by nanoporous carbon, and the water adsorption properties of a series
Jan Marčec   +7 more
wiley   +1 more source

Global and Detailed Calculation of Tube Wall Temperature in a Process Furnace Steam Superheater

open access: yesChemie Ingenieur Technik, EarlyView.
This study presents a comparison between an iterative global model and multiple approaches to a new non‐iterative model with the purpose of predicting tube wall temperature of a superheater. The results show that the non‐iterative method achieves sufficient accuracy while improving the prediction of local temperature distribution and better ...
Anežka Michálková, Zdeněk Jegla
wiley   +1 more source

SPECIFIC HEAT CAPACITY AND THERMAL CONDUCTIVITY OF HEAT STORAGE MATERIALS BASED ON PARAFFIN, BROWN-COAL WAX AND POLYETHYLENE WAX [PDF]

open access: yesProblems of the Regional Energetics, 2014
The present paper overviews heat storage materials (HSM) with phase change based on organic compounds. They consist of paraffin, brown-coal wax and polyethylene wax. These materials are produced on an industrial scale for the foundry work.
Snezhkin Yu.   +4 more
doaj  

The Effect of Wet Compression on a Centrifugal Compressor for a Compressed Air Energy Storage System

open access: yesEnergies, 2019
There is an urgent demand to reduce compression power consumption in Compressed Air Energy Storage (CAES) systems. Wet compression has been widely used in gas turbines to reduce compressor power consumption and improve thermal efficiency, but this ...
Jianting Sun   +4 more
doaj   +1 more source

Clathrate hydrate crystallization

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Clathrate hydrate crystallization has been an area of interest to chemical engineers from the point of view of crystal structure, thermophysical properties, phase equilibria, kinetics, industrial applications, and environmental (climate change) implications.
Peter Englezos
wiley   +1 more source

Numerical simulation study on the evolution of the temperature field and frozen wall in fractured rock mass

open access: yesDeep Underground Science and Engineering, EarlyView.
The evolution of the temperature field and frozen wall under different fracture conditions was examined by an artificial ground freezing‐based thermal‐hydraulic coupled model. It was observed that fracture inclination affects the interaction extent of freezing pipes and fracture, while phase transition extent is the dominant factor for heat transfer in
Chenyi Zhang   +9 more
wiley   +1 more source

Effect of C/CO2 molar ratio on CO2 atmosphere fluidized preheating activation characteristics of semi-char

open access: yesMeitan xuebao
There are many fields involved in China’s industry, and the carbon reduction is urgent. Oxy-fuel combustion is the core process of carbon capture in combustion.
Haixia ZHANG   +4 more
doaj   +1 more source

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