Results 91 to 100 of about 121,749 (306)

Unveiling the Role of Curvature in Carbon for Improved Energy Release of Ammonium Perchlorate

Advanced Materials, EarlyView.
High‐curvature carbon materials identified via machine learning and simulation can enhance the heat release and combustion performance of ammonium perchlorate. ABSTRACT The catalytic role of carbon curvature in the thermal decomposition of ammonium perchlorate (AP) remains largely unexplored. To address this gap, this study employs machine learning and
Dan Liu, Keliang Song, Haorui Zhang, Zhipeng Liu, Guansong He, Junru Wang, Wenming Yang, Xu Zhao, Zhijian Yang   +8 more
wiley   +1 more source

Summary of Pressure Gain Combustion Research at NASA [PDF]

NASA has undertaken a systematic exploration of many different facets of pressure gain combustion over the last 25 years in an effort to exploit the inherent thermodynamic advantage of pressure gain combustion over the constant pressure combustion ...
Paxson, Daniel E., Perkins, H. Douglas
core   +1 more source

A Thermodynamic Study of Pressure Gain Combustion in Combined Cycles

Journal of Physics: Conference Series
Abstract Gas turbines are internal combustion engines based on the Brayton-Joule cycle with four thermodynamic processes including air compression, constant pressure combustion, gas expansion and heat rejection. Actually, a relevant increase in entropy production is related to the constant pressure combustion, even in the ideal cycle, so
Antonio Giuffrida, Paolo Chiesa, Antonio P. Sordillo   +2 more
openaire   +1 more source

2D Co‐Mo‐Hydroxide‐Based Multifunctional Material for the Development of H2‐Based Clean Energy Technologies

Advanced Materials, EarlyView.
2D α‐Co(OH)2 interleaved with Mo species displays an appealing dual functionality for the production and use of green hydrogen.Mo incorporation greatly benefits the electrochemical behaviour in Oxygen Evolution Reaction for H2 production, while the magnetocaloric response at liquid H2 temperature paves the way for alternative cryogenic refrigerants ...
Daniel Muñoz‐Gil, Celia Castillo‐Blas, Dawid Krystian Feler, Isabel Gómez‐Recio, Miguel Tinoco, Ana Querejeta‐Fernández, Rodrigo González‐Prieto, Felipe Gándara, Romualdo Santos Silva Jr, Pilar Ferrer, Carlos Prieto, Luc Lajaunie, José Luis Martinez‐Peña, María Luisa Ruiz‐González, José María González‐Calbet   +14 more
wiley   +1 more source

Fractal characteristics of spontaneous combustion of gas-bearing coal under different temperature and adsorption pressure conditions

Meitan kexue jishu
The composite disaster of gas and coal spontaneous combustion in the goaf is increasingly becoming the main disaster pattern that restricts the safe production of mines.
Zhenrong LI, Fuchao TIAN, Gang WANG, Bo TAN, Yujin QIN   +4 more
doaj   +1 more source

Numerical Investigation on Flame Propagation in Vented Gas Explosion

Chemical Engineering Transactions, 2017
Explosion venting technology is one of the effective and widely used methods in protection measures against accidental internal gas explosions by relieving the pressure generated within the volume.
N.H.F.M. Zaidi, R.M. Kasmani, A. Mustafa, N. Ibrahim, R.R. Ali, H. Hasbullah, M.N.M. Shokri, M.D.M. Samsudin   +7 more
doaj   +1 more source

Effect of tangential swirl air inlet angle on the combustion efficiency of a hybrid powder-solid ramjet [PDF]

, 2019
A new ramjet configuration using powder and solid fuel as propellant is investigated, namely, hybrid powder-solid ramjet (HPSR). Boron particles were used as the powder in this study.
ANSYS Inc, Ao, Betelin, Cai, Chang, Chelaru, Chen, dawara, Gany, Gany, Glassman, Goroshin, Haijun Sun, Hu, Humberto Medina, Hussmann, Hussmann, Jung, Kalpakli, Kazaoka, King, Li, Li, Liang, Loftus, Magnussen, Meinköhn, Morsi, Musa, Musa, NASA, Natan, Nie, Pern, Pern, Povitsky, Rashkovskiy, Rodić, Rui Jia, Sandall, Sender, Shih, Shorr, Varghese, Wang, Xia, Xia, Xu, Yeh, Yihua Xu   +49 more
core   +1 more source

Crystal Engineering of Reticular Materials for Gas‐ and Liquid‐Phase Hydrocarbon Separation

Advanced Materials, EarlyView.
Crystal engineering enables systematic study of structure/function relationships as exemplified by pore engineering of reticular sorbents, including porous coordination networks and covalent organic frameworks. This review assesses such studies applied across the full scope of industrially relevant hydrocarbon separations to provide insight into how ...
Xia Li, Soumya Mukherjee, Michael J. Zaworotko   +2 more
wiley   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Experimental Study of Methods of Increasing the Efficiency of a Direct-Flow Air-Jet Detonation Engine

Challenges and Issues of Modern Science, 2023
A fundamentally new direction in the development of rocket and space propulsion is the introduction of jet engines operating on the detonation principle of energy conversion of the working body.
Vitalii Stoliarchuk, Oleksandr Zolotko, Oleksandr Aksonov   +2 more
doaj