Results 41 to 50 of about 21,696 (351)

Conjugate Heat Transfer Analysis in Cryogenic Microchannel Heat Exchanger [PDF]

open access: yes, 2015
Printed circuit heat exchanger (PCHE) is a highly integrated plate type compact heat exchanger and most important as well as a most critical component in the cryogenic application. Compact heat exchangers are characterized by area density (? = AHT / V) i.
Biswal , Rasmikanti
core  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Investigation of the Effectiveness of a Compact Heat Exchanger with Metal Foam in Supercritical Carbon Dioxide Cooling

open access: yesEnergies
Printed circuit heat exchangers (PCHE) are ideal for use in very demanding operating conditions. In addition, they are characterized by very high efficiency, which can still be increased.
Roman Dyga
doaj   +1 more source

Performance evaluation of a printed circuit heat exchanger with a novel two-way corrugated channel

open access: yesResults in Engineering, 2023
A numerical and experimental study is conducted to improve the hydrothermal performance of a printed circuit heat exchanger (PCHE) using innovative channels. Sinusoidal two-way corrugated channels are proposed to modify the PCHE design.
Ahmed Oleiwi Samarmad   +1 more
doaj   +1 more source

PERENCANAAN SHELL AND TUBE HEAT EXCHANGER SEBAGAI PENDINGIN COOLING WATER DI LAPANGAN WEST SENO CHEVRON INDONESIA COMPANY [PDF]

open access: yes, 2008
Heat Exchanger is important equipment in industry including oil and gas industry. Lately, at West Seno field Chevron Indonesia Company found degradation of Gasketed and Plate Heat Exchanger’s thermal performance.
SATRIA JAYA, YOSSIE
core  

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari   +4 more
wiley   +1 more source

Studie tepelného oběhu s nadkritickým CO2 [PDF]

open access: yes, 2018
With the increasing interest in solar and geothermal power plants as well as waste heat recovery systems from many technologies, the whole world is more focused on the gas power cycles. Especially, the supercritical carbon dioxide (S-CO2) cycles are very
Veselý Ladislav
core  

Exergetic and Economic Evaluation of a Transcritical Heat-Driven Compression Refrigeration System with CO2 as the Working Fluid under Hot Climatic Conditions [PDF]

open access: yes, 2019
The purpose of this research is to evaluate a transcritical heat-driven compression refrigeration machine with CO2 as the working fluid from thermodynamic and economic viewpoints.
Luo, Jing   +3 more
core   +1 more source

Stabilization of Miscible Aqueous Phases via Diffusion‐Controlled Multifunctional Nanoparticle‐Ligand Complexation

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a versatile approach to harnessing miscible aqueous domains, enabling liquid‐in‐liquid compartmentalization using a barrier formed in situ rather than bulk immiscibility. The barrier forms upon the complexation of multifunctional nanoparticles and ligands at the contact boundary of aqueous phases.
Seyyed Alireza Hashemi   +7 more
wiley   +1 more source

Numerical Improvement Using Flow and Heat Transfer Calculations of the Zigzag Geometry for Carbon Dioxide PCHEs

open access: yesEnergies, 2022
A printed circuit heat exchanger (PCHE) is an efficient and compact heat exchanger that can work under high temperature and high pressure. For Z-shaped channel PCHEs, the corner structure could enhance heat transfer at the expense of increasing the flow ...
Bo Wang   +3 more
doaj   +1 more source

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