Results 161 to 170 of about 3,878 (214)

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

open access: yesAdvanced Functional Materials, EarlyView.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao   +6 more
wiley   +1 more source

Graphene Quantum Dot‐Induced Microstrain for Framework Stabilization of High‐Entropy Prussian Blue Analog in High‐Current Alkaline Hydrogen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
The intrinsic distortion‐rich lattice of HEPBA with GQD‐enabled microstrain engineering establishes a mechanistic route toward high‐performance alkaline hydrogen evolution reaction. HEPBA inherently feature heterogeneous local coordination environments arising from multimetal incorporation, while properly introducing GQD during coprecipitation ...
Mia Rinawati   +10 more
wiley   +1 more source

HEAT TRANSFER ENHANCEMENT IN A CORRUGATED TUBE

International Communications in Heat and Mass Transfer, 2002
Experimental results of heat transfer and pressure drop in a corrugated tube, used in chemical and food industry, are presented, for single-phase flow at moderate Reynolds numbers ...
BARBA A., RAINIERI, Sara, SPIGA, Marco
openaire   +3 more sources

Heat Transfer Enhancement in Heat Exchangers

1998
The work presents the design relations and recommendations on the use of a number of efficient methods of heat transfer enhancement in differnt-geometry ...
E.K. Kalinin, G.A. Dreitser
openaire   +1 more source

Nanowires for Enhanced Boiling Heat Transfer

Nano Letters, 2009
Boiling is a common mechanism for liquid-vapor phase transition and is widely exploited in power generation and refrigeration devices and systems. The efficacy of boiling heat transfer is characterized by two parameters: (a) heat transfer coefficient (HTC) or the thermal conductance; (b) the critical heat flux (CHF) limit that demarcates the transition
Renkun, Chen   +5 more
openaire   +2 more sources

Heat transfer evaluation of an enhanced heat transfer tube bundle

Energy, 2014
Abstract Demands to increase performance of modern heat exchange systems are constantly being made. Typical requirements include the removal of larger amounts of energy or the development of process units that occupy a smaller unit footprint. Vipertex™ 1EHT enhanced surfaces have been designed and produced through material surface modifications in ...
David J. Kukulka, Rick Smith
openaire   +1 more source

Enhancement of heat transfer in stokes flows

2017 IEEE 56th Annual Conference on Decision and Control (CDC), 2017
We discuss the optimal control problem of enhancing heat transfer between two fluids via controlling the velocity of the cold fluid flow. In this paper, we consider that the fluid flow for cooling the hot fluid is a Stokes fluid flow induced by the boundary control inputs through the Navier slip boundary conditions.
openaire   +1 more source

Heat transfer enhancement in heated microchannels

This study investigates the physical characteristics of a single flow-induced filament on the fluid dynamics and heat transfer performance inside an unconfined heated microchannel through numerical simulations. The contributions of length (𝐿𝑥), mass ratio (𝑀) and reduced velocity (𝑈𝑟), as controlling parameters for flexibility, heat transfer ...
Gholami, Aysan   +2 more
openaire   +1 more source

Heat Transfer Enhancement of Heat Exchangers

1999
Preface. Introduction to Heat Transfer Enhancement - Preview of Contributions S. Kakac. The Imperative to Enhance Heat Transfer A.E. Bergles. Sustainability Criteria for Heat Exchanger Design N.H. Afgan, M.G. Calvalho. Extended Surface Heat Transfer in Heat Exchangers and Performance Measurements P.J. Heggs.
openaire   +1 more source

Heat Transfer Fundamentals for Design of Heat Transfer Enhancement Devices

2019
The fundamentals of heat transfer enhancement in heat-exchanging devices have been introduced in this chapter. The classification of heat transfer technology and different heat transfer techniques has been presented. The need for augmentation and its benefits have also been discussed.
Sujoy Kumar Saha   +3 more
openaire   +1 more source

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