Analysis and Optimization of Efficiency Rotor Wheels Microturbines

Abstract

Examined efficiency of axial rotor wheels microturbines. The mathematical models, regression-type, for efficiency rotor wheels and the exit angle of the working body from rotor wheels are presented. The technique of determining the gas-dynamic and structural characteristics of the flow part of the rotor wheels microturbines are also shown.

Experimental Study of Pneumatic Two-Stage Small-Size Radial Turbine

“…While analyzing experimental data, it should be mentioned that the greatest influence on the nozzle efficiency is exerted by geometrical expansion angle of supersonic nozzle of jet reaction turbine γ, this is indicated by the coefficients of appropriate variables in regression equation. The obtained results agree with the data of other researchers [16,17,18,19,20,21] and provide additional information. Herewith, the experimental point 6 provides the greatest efficiency of pneumatic two-stage small-size radial turbine.…”

Concretes for Underwater Structures

“…Hydraulic concrete belongs to heavy types. Its composition with increased resistance to water, and withstands low temperatures, has high density, ideal resistance to any mechanical deformation [10,11].…”

Results of the Study Rotor Wheels Supersonic Microturbines with a Large Angle of Rotation of the Flow

“…In the work a study of rotor wheels was conducted in the next range mode parameters: Mach number at the exit of working wheel to theoretical parameters (Mw2t) 0,38 ... 2,82, the ratio of the circumferential velocity working wheel to the flow rate at the outlet of the nozzle unit (U / C) 0 ... 0.66, the angle of leakage flow working body to the rotor (β1) 2,86 ° ... 31,72 °. The Results of Research On the basis of experimental studies was a mathematical regression model estimate of the coefficient in the rotor speed [5]. Further conclusions were based on the results of numerical experiments on the resulting mathematical model.…”