Results 91 to 100 of about 4,466,317 (351)

Investigation on thermal-hydraulic performance of outdoor heat exchanger in air sources heat pump [PDF]

open access: yes, 2017
A plethora of findings exists on the decreasing heat transfer performance of ASHP under frosting condition. This study investigates, using field and laboratory experiments, the frosting behavior and heat transfer performance of fin-tube exchangers ...
Chen, Y   +4 more
core   +2 more sources

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann   +3 more
wiley   +1 more source

Performance evaluation of a PCM-integrated solar hybrid adsorption desalination cooling system

open access: yesEnergy Reports
The novel integration of phase change materials (PCMs) into a solar-driven hybrid adsorption desorption-cooling (ADC) system is examined in this study. This study models effects of integration of different PCMs into the hot water thermal storage tank to ...
Siavash Roshandel   +3 more
doaj   +1 more source

Cryogenic fluid flow instabilities in heat exchangers [PDF]

open access: yes, 1969
Analytical and experimental investigation determines the nature of oscillations and instabilities that occur in the flow of two-phase cryogenic fluids at both subcritical and supercritical pressures in heat exchangers.
Fleming, R. B., Staub, F. W.
core   +1 more source

Enhancing Strength and Electrical Conductivity in Al–Zr–Sc Conductor Alloys Through Sn and Sr Microalloying and Two‐Step Aging Treatment

open access: yesAdvanced Engineering Materials, EarlyView.
Trace additions of Sn and Sr combined with a two‐step aging treatment are shown to enhance the microstructure and performance of Al–Zr–Sc conductor alloys. Strength and electrical conductivity increase concurrently through accelerated precipitation of fine Al3(Sc, Zr) precipitates and improved dislocation resistance, offering a cost‐effective pathway ...
Quan Shao   +3 more
wiley   +1 more source

Suitability Assessment of Two Types of Heat Exchangers for High Temperature, Naturally Circulating Helium Cooling Loop

open access: yesJournal of Mechanical Engineering, 2019
The paper presents a comparison of the process properties of two types of the heat exchangers designed for the heat removal from a high temperature helium cooling loop with steady natural circulation of helium.
Dzianik František   +2 more
doaj   +1 more source

Ocean Thermal Energy Conversion (OTEC) [PDF]

open access: yes, 1977
Energy Research and Development Administration research progress in Ocean Thermal Energy Conversion (OTEC) is outlined. The development program is being focused on cost effective heat exchangers; ammonia is generally used as the heat exchange fluid ...
Lavi, A.
core   +1 more source

Topology optimization of heat exchangers: A review

open access: yesEnergy, 2022
Ahmad Fawaz   +4 more
semanticscholar   +1 more source

Thermo-Hydraulic Performance Enhancement of Finned Elliptical Tube Heat Exchangers by Utilizing Innovative Dimple Turbulators

open access: yesHeat Transfer Engineering, 2019
As a new type of fin structure in finned tube heat exchangers, dimple turbulators exhibit excellent potential for thermo-hydraulic performance enhancement. A three-dimensional numerical simulation study was conducted to investigate the influences of five
Babak Lotfi, B. Sundén
semanticscholar   +1 more source

Composition‐Tuned Enhancement of the Anomalous Nernst Effect in FeCo–Pt Thin Films on Rigid and Flexible Substrates

open access: yesAdvanced Engineering Materials, EarlyView.
Disordered (Fe50Co50)1−xPtx thin films exhibit a pronounced anomalous Nernst effect (ANE) with a strong composition dependence on both rigid and flexible substrates. The transverse thermoelectric response peaks near 22.5 at.% Pt, accompanied by enhanced αxy/σxy scaling, thermal transport, and ANE sensitivity.
Mojtaba Mohammadi   +2 more
wiley   +1 more source

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