Results 21 to 30 of about 50,603 (296)

Centrifugal Fan Performance With Distorted Inflows [PDF]

open access: yesJournal of Engineering for Gas Turbines and Power, 1983
Efforts to quantify degradation of the performance of a centrifugal fan subjected to distorted inflows are presented. The study centered on examination of pressure rise, efficiency, and onset of stall for a backwardly-inclined, airfoil-bladed fan. Nonuniform flow patterns were generated in an adjustable countervane damper assembly installed upstream of
T. Wright, S. Madhavan, J. DiRe
openaire   +1 more source

Airfoil Design and Flow Analysis of a Multi-Blade Centrifugal Fan: An Experimental and Simulation Study

open access: yesApplied Sciences
To overcome the technical challenges of the multi-blade centrifugal fan, such as low efficiency and insufficient total pressure, the blades of the fan were optimally designed in this study.
Haonan Yin   +4 more
doaj   +1 more source

Quasi-unsteady Flow Field Computation and Performance Prediction of Contra-Rotating Fan [PDF]

open access: yesMATEC Web of Conferences, 2020
Discussion of numerical flow field prediction with two rotor-stator interface models is presented in the paper. The mixing plane and harmonic models are applied to contra rotating fan. Both models confirmed good performance and high power density leading
Červenka Bystrík   +2 more
doaj   +1 more source

Experimental and Numerical Analysis of the Flow Inside a Configuration Including an Axial Pump and a Tubular Exchanger [PDF]

open access: yes, 2010
In centrifugal and axial pumps, the flow is characterized by a turbulent and complex behavior and also by physical mechanisms such as cavitation and pressure fluctuations that are mainly due to the strong interactions between the fixed and mobile parts ...
BAKIR, Farid   +3 more
core   +5 more sources

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Investigation on optimization of centrifugal fan impeller based on the blade angle distribution law

open access: yesAdvances in Mechanical Engineering
Centrifugal fans are widely used in various industries. When the efficiency of the centrifugal fan is low, it is often desired to improve its efficiency by replacing the impeller and keeping other components unchanged. The blade angle distribution on the
Shen Chun-feng   +4 more
doaj   +1 more source

Realizable k-ε Model-Based Gradual-Radius Volute Tongue on Aerodynamic Performance and Noise of Multi-Wing Centrifugal Fan

open access: yesApplied Sciences
The multi-wing centrifugal fan is an important part of air conditioning systems, particularly in the automotive domain. Due to the compact structure and short blade passage of the fan, it may reduce the aerodynamic performance and generate noise.
Yizhe Huang   +5 more
doaj   +1 more source

MR Continuously Variable Transmission Driven by SMA for Centrifugal Fan in Nuclear Power Plant

open access: yesScience and Technology of Nuclear Installations, 2012
The running efficiency of centrifugal fan affects the economical efficiency of the ventilation system. In this paper, we proposed a continuously variable transmission system based on magnetorheological fluid and shape memory alloy for improving the ...
Jianzuo Ma, Hongyu Shu, Jin Huang
doaj   +1 more source

Method and turbine for extracting kinetic energy from a stream of two-phase fluid [PDF]

open access: yes, 1979
An axial flow separator turbine is described which includes a number of nozzles for delivering streams of a two-phase fluid along linear paths. A phase separator which responsively separates the vapor and liquid is characterized by concentrically related
Elliott, D. G.
core   +1 more source

Boost converter fed high performance BLDC drive for solar PV array powered air cooling system [PDF]

open access: yes, 2017
This paper proposes the utilization of a DC-DC boost converter as a mediator between a Solar Photovoltaic (SPV) array and the Voltage Source Inverters (VSI) in an SPV array powered air cooling system to attain maximum efficiency.
Depuru, Shobha Rani   +1 more
core   +2 more sources

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