Results 81 to 90 of about 339,879 (316)

Degradation Mechanisms in PEM Water Electrolysis: Diagnosis and Impact

open access: yesAdvanced Materials Technologies, EarlyView.
This review provides an analysis of degradation mechanisms in proton electrolyte membrane water electrolyzers (PEMWE), focusing on all key components. It discusses diagnostic and measurement techniques for evaluating degradation, less‐studied mechanisms, and an expert survey.
Annik Bernhardt   +11 more
wiley   +1 more source

Cool-down and frozen start-up behavior of a grooved water heat pipe [PDF]

open access: yes
A grooved water heat pipe was tested to study its characteristics during the cool-down and start-up periods. The water heat pipe was cooled down from the ambient temperature to below the freezing temperature of water.
Jang, Jong Hoon
core   +1 more source

Solar thermal energy receiver [PDF]

open access: yes, 1992
A plurality of heat pipes in a shell receive concentrated solar energy and transfer the energy to a heat activated system. To provide for even distribution of the energy despite uneven impingement of solar energy on the heat pipes, absence of solar ...
Baker, Karl W., Dustin, Miles O.
core   +1 more source

Design Optimization of a Variable Stiffness Robotic Gripper with Passive Restoration Fabricated by Multimaterial 3D Printing

open access: yesAdvanced Robotics Research, EarlyView.
A multimaterial robotic gripper fabricated via multimaterial 3D printing integrates conductive thermopolymer joints with flexible elastomeric components. Joule heating enables precise joint‐level stiffness modulation, enhanced by embedded temperature sensors, passive shape restoration, and active cooling, enabling versatile manipulation capabilities ...
Daniel Jee Seng Goh   +4 more
wiley   +1 more source

Heat transfer enhancement of double pipe heat exchanger using rotating of variable eccentricity inner pipe

open access: yesAlexandria Engineering Journal, 2018
The double pipe heat exchanger type has low heat transfer rate compared with other types of heat exchangers. Therefore, this article aims to enhance the heat transfer rate of that type of heat exchanger by introducing a rotation of the heat exchanger ...
Marwa A.M. Ali   +3 more
doaj   +1 more source

Monogroove heat pipe design: Insulated liquid channel with bridging wick [PDF]

open access: yes, 1985
A screen mesh artery supported concentrically within the evaporator section of a heat pipe liquid channel retains liquid in the channel. Continued and uniform liquid feed to the heat pipe evaporation section (20) during periods of excessive heat transfer
Alario, J. P.   +2 more
core   +1 more source

Multi‐Material Additive Manufacturing of Soft Robotic Systems: A Comprehensive Review

open access: yesAdvanced Robotics Research, EarlyView.
This review explores the transformative role of multi‐material additive manufacturing (MMAM) in the development of soft robotic systems. It presents current techniques, materials, and design strategies that enable functionally graded and adaptive structures.
Ritik Raj   +2 more
wiley   +1 more source

Design and Verification of High Temperature Sodium Heat Pipes with Annular Wick Structure

open access: yesYuanzineng kexue jishu
Heat pipe-cooled nuclear reactors have the advantages of high reliability due to the characteristics of simple system structure, passive heat transfer, single point failure prevention, strong self-adaptive capability and start-up from the frozen state ...
LI Zhong, WANG Shumiao, , LIANG Wenfeng, MA Mingyang, TENG Chunming, XIE Qilin
doaj   +1 more source

Heat Pipe Solar Water Heater System Based on Heat Pipe Technology

open access: yesChemical Engineering Transactions, 2018
Although traditional solar water heaters bring great convenience to people’s life, there are still shortcomings such as slow start-up speed and poor thermal conductivity. Therefore, in order to improve the performance of solar water heaters, this paper designs a heat pipe solar water heater system based on heat pipe technology, and uses experiments to ...
openaire   +2 more sources

Heat pipe fatigue test specimen: Metallurgical evaluation [PDF]

open access: yes
An innovative creep/fatigue test was run to simulate the temperature, mechanical load, and sodium corrosion conditions expected in a heat pipe designed to supply thermal energy to a Stirling cycle power converter.
Cronin, Michael J.   +2 more
core   +1 more source

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