Results 61 to 70 of about 339,879 (316)

Internal flow pattern of the condenser section that affects the heat transfer characteristics of rectangular two-phase closed thermosyphon

open access: yesCase Studies in Thermal Engineering
This research examines the internal flow patterns within the condenser and evaporator sections that influence the heat transfer characteristics of a rectangular two-phase closed thermosyphon (RTPCT).
Kittipon Khaongam   +2 more
doaj   +1 more source

Restartable heat pipe [PDF]

open access: yes, 1972
Inclusion in heat pipe of auxiliary working fluid which has considerably lower freezing point than main working fluid enables easy starting after main working fluid has been cooled to or below freezing ...
Shlosinger, A. P.
core   +1 more source

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

The effect of different working fluids and internal geometries on the efficiency of evacuated tube heat pipe solar collectors

open access: yesJournal of Energy in Southern Africa, 2020
In this study, a heat pipe was modified with designed and manufactured inserts of specific profiles in order to investigate the effect of the internal geometries and working fluids on the efficiency of the evacuated tube heat pipe solar collector.
Jean Gad Mukuna, Jasson Gryzagoridis
doaj   +1 more source

Extended Development of Variable Conductance Heat Pipes [PDF]

open access: yes
A high-capacity vapor-modulated heat pipe was designed and tested. In 1977, a program was undertaken to use the aforementioned heat pipe to study protection from freezing-point failure, increase control sensitivity, and transient behavior under a wide ...
Antoniuk, D.   +2 more
core   +1 more source

An Atomic‐Level Bimetallic MOF Platform Overcoming the Stability‐Performance Tradeoff for Laser Propulsion

open access: yesAdvanced Materials, EarlyView.
This work introduces an atomic‐level engineered bimetallic MOF Platform that resolves the inherent trade‐off between environmental stability and propulsion efficiency. By integrating robust Fe‐O bonds for hydrolysis resistance and enabling d‐orbital charge transfer (Fe3+→Cu2+) for enhanced photothermal conversion, the design achieves a highly durable ...
Senlin Rao   +3 more
wiley   +1 more source

Superfluid Helium Heat Pipe

open access: yesPhysics Procedia, 2015
AbstractThis paper reports on the development and the thermal tests of three superfluid helium heat pipes. Two of them are designed to provide a large transport capacity (4 mW at 1.7K). They feature a copper braid located inside a 6mm outer diameter stainless tube fitted with copper ends for mechanical anchoring. The other heat pipe has no copper braid
openaire   +2 more sources

Spaceborne power systems preference analyses. Volume 2: Decision analysis [PDF]

open access: yes
Sixteen alternative spaceborne nuclear power system concepts were ranked using multiattribute decision analysis. The purpose of the ranking was to identify promising concepts for further technology development and the issues associated with such ...
Feinberg, A.   +2 more
core   +1 more source

Microwave power receiving antenna Patent [PDF]

open access: yes, 1970
Microwave power receiving antenna solving heat dissipation problems by construction of elements as heat pipe ...
Dailey, C. C.
core   +1 more source

Powder‐to‐Film Conversion of Nickel Single‐Atom Catalysts into Binder‐Free and Resistant Electrodes

open access: yesAdvanced Materials Interfaces, EarlyView.
A reproducible strategy is reported for fabricating standalone thin‐film electrodes composed of CNx‐supported Ni single‐atom catalysts. The resulting binder‐free electrodes exhibit robust stability, enhanced charge transfer, and superior electrochemical performance, offering scalable opportunities for applications in electrochemistry. ABSTRACT Although
Milla Vigliengo   +8 more
wiley   +1 more source

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