Results 71 to 80 of about 80,532 (290)

Modeling of Hydro-Pneumatic Energy Storage Using Pump Turbines [PDF]

open access: yes, 2011
Modelling of a hydro-pneumatic energy storage system is presented in this paper. Hydro pneumatic storage aims to combine the good efficiency of hydraulic energy conversion and the space flexibility of pneumatic storage.
COLAS, Frédéric   +4 more
core  

Class B Fire-Extinguishing Performance Evaluation of a Compressed Air Foam System at Different Air-to-Aqueous Foam Solution Mixing Ratios

open access: yesApplied Sciences, 2016
The purpose of this research is to evaluate the fire-extinguishing performance of a compressed air foam system at different mixing ratios of pressurized air. In this system, compressed air is injected into an aqueous solution of foam and then discharged.
Dong-Ho Rie, Jang-Won Lee, Seonwoong Kim
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

open access: yesAdvanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han   +5 more
wiley   +1 more source

Modular 3D Printed Compressed Air Driven Continuous-Flow Systems for Chemical Synthesis

open access: yes, 2019
In this present study, we describe the development of a low-cost, small-footprint and modular 3D printed continuous-flow system that readily attaches to existing stirrer hotplates.
Zenobia, Rao   +3 more
core   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova   +2 more
wiley   +1 more source

Rapid prediction of Prandtl number of compressed air

open access: yes, 2016
Two methods are presented and compared for quickly calculating this important, yet neglected parameter Over the last few decades, a considerable effort has been directed to toward the evaluation of thermophysical and transport properties of air for a ...
Kashiwao, Tomoaki   +4 more
core  

Fatal recto-sigmoid rupture by compressed air

open access: yesEgyptian Journal of Forensic Sciences, 2016
Compressed air is a concentrated stream of air at high pressure and high speed that can cause fatal injury to the operator and the people around him when handled inappropriately.
Varun Pai, Smitha Shetty
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Energy Efficiency in Compressed Air Systems

open access: yes, 2010
Energy use in compressed air systems accounts for typically 10% of the total industrial electricity consumption. It also accounts for close to 99% of the CO2 footprint of an air compressor and approximately 80% of the life cycle costs of a compressor ...
Pavlov, A., Hingorani, A.
core  

Introduction to compressed air systems [PDF]

open access: yes, 2010
The compressed air system has various applications, each usage differs from another. The scope of this book covers the fundamentals and operation of compressed air systems, their maintenance and troubleshooting.
Ramli, Yahaya
core  

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