Results 91 to 100 of about 1,579,908 (242)

Investigation of Stray‐Light Patterns in the eROSITA X‐Ray Cameras

Astronomische Nachrichten, EarlyView.
ABSTRACT eROSITA (extended ROentgen Survey with an Imaging Telescope Array) is the soft X‐ray instrument aboard the Spectrum‐Roentgen‐Gamma (SRG) mission, developed under the responsibility of the Max Planck Institute for Extraterrestrial Physics (MPE).
Veronika Stieglitz, Peter Friedrich, Susanne Friedrich, Konrad Dennerl, Michael Freyberg   +4 more
wiley   +1 more source

Graphene Materials for Sustainable Energy Applications: A Contemporary Perspective

Carbon 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, Seul‐Yi Lee, Roop L. Mahajan, Soo‐Jin Park   +3 more
wiley   +1 more source

Optimal design of heat pipes for city gate station heaters by applying genetic and Bayesian optimization algorithms to an artificial neural network model

Case Studies in Thermal Engineering
This study contains a novel idea to improve the performance of city gate station heaters, using pulsating heat pipes with optimized structure. In this research, a hybrid method including Bayesian and genetic algorithms is implemented to optimize the ...
Ghaem Taghipour Kani, Amirreza Ghahremani   +1 more
doaj   +1 more source

Comparative Study of Gas and Liquid Flow in Packed Beds Using Phase‐Contrast MRI

Chemie Ingenieur Technik, EarlyView.
This work presents applications of phase‐contrast magnetic resonance imaging (MRI) to investigate fluid flow fields and temperature in packed beds. Comparison of ethane (C2H6) gas flow with that of water flow is done at similar flow conditions. The temperature of water is also measured using MRI.
Maitreyi Sangal, Maria Anikeeva, Frank Godenschweger, Jan‐Bernd Hövener, Oliver Speck   +4 more
wiley   +1 more source

Sintered aluminium heat pipe (SAHP) [PDF]

, 2012
This work is the product of an ongoing PhD project in the School of the Built and Natural Environment of Northumbria University in collaboration with the University of Liverpool and Thermacore Europe Ltd. The achievements at the end of the first year are
Ng, Bobo, Sutcliffe, C. J., Ameli, Masoud, Agnew, Brian, Singh, J., McGlen, R. J.   +5 more
core  

High-temperature reaction of sodium vapour with quartz glass

MATEC Web of Conferences, 2018
Heat pipes are one of the most efficient ways to transfer thermal energy hundred times more efficiently than copper. In this work, we present the investigation of sodium terminal velocity inside a glass pulsating heat pipe.
Nosek Radovan, Kolkova Zuzana, Trško Libor, Liptáková Tatiana, Procházka Jan, Libera Ondřej, Bublíková Petra   +6 more
doaj   +1 more source

On Metal Carbonyl Compounds in Catalytic Methanol Synthesis: Detection, Consequences, and Removal

Chemie Ingenieur Technik, EarlyView.
Deactivation of Cu/ZnO/Al2O3 catalysts by metal carbonyl compounds in the feed gas is a critical problem in catalytic methanol synthesis. We utilize PTR–MS to identify potential chemical sources, detect contamination in an in‐house CO gas line, and validate filter methods for removing these catalyst poisons before synthesis.
Florian Stappert, Daniel Laudenschleger, Tim Herrendorf, Julia Menten, Holger Ruland   +4 more
wiley   +1 more source

Flow and heat transfer characteristics in pulsating pipe flows (effects of pulsation on internal heat transfer in a circular pipe flow)

Heat Transfer - Japanese Research, 1996
Effects of pulsation on flow and heat transfer characteristics are experimentally examined in the pulsating pipe flows having sinusoidal velocity fluctuation around a nonzero mean. By systematically varying three pulsation parameters (the amplitude, frequency, and mean velocity), time-averaged and fluctuating temperature profiles are measured under the
ISHINO, Yojiro, SUZUKI, Manabu, ABE, Tomoaki, OHIWA, Norio, YAMAGUCHI, Shigeki   +4 more
openaire   +2 more sources

Development and Validation of a Multipurpose Setup for Synthesis Gas Chemistry

Chemie Ingenieur Technik, EarlyView.
Validation of a flexible multipurpose setup for synthesis gas reactions under industrially relevant conditions equipped with precise control of temperature, pressure, and gas composition, and multiple online detection methods (IR, GC, QMS, and RAMAN), demonstrated by successful operation of NH3 decomposition, MeOH synthesis, and NH3 synthesis ...
Jan Folke, Simon Ristig, Oscar Gómez‐Cápiro, Daniel Laudenschleger, Holger Ruland   +4 more
wiley   +1 more source

Applying GMDH neural network to estimate the thermal resistance and thermal conductivity of pulsating heat pipes

Engineering Applications of Computational Fluid Mechanics, 2019
Thermal performance of pulsating heat pipes (PHPs) is dependent to several factors. Inner and outer diameter of tube, filling ratio, thermal conductivity, heat input, inclination angle, and length of each section are the most influential factors in the ...
Mohammad Hossein Ahmadi, Milad Sadeghzadeh, Amir Hossein Raffiee, Kwok-wing Chau   +3 more
doaj   +1 more source