Calculate diameter of runner, Mechanical Engineering

Assignment Help:

A radically inward flow turbine working under a head of 10 m and running at 250 rpm develops 185 KW at the turbine shaft. At inlet tip of the runner vane, the peripheral velocity of the wheel is 0.9.√2gH and radial velocity of flow is 0.3.√2.gH; when H is the effective head on the turbine,. If overall efficiency of turbine is 78% and hydraulic losses amount to 12% of total head, Calculate :-

(i) Diameter of runner and its width at inlet.

(ii) Guide blade angle at which water is directed to runner.

(iii) Inlet angle of the runner vane.

Consider that turbine is a reaction one with radial discharge at outlet. The following data pertains to an inward flow reaction turbine :

Net head = 60m; speed = 650rpm; break power = 275 KW;

Ratio of wheel width to wheel diameter at inlet = 0.10; Ratio of inner diameter to outer

diameter = 0.50; flow ratio (Kf) = 0.17; ηh = 0.95; ηo = 0.85.

The Flow velocity remains constant and discharge is radial. Neglect the area blockage by blades, work done that dimensions and blad angles of turbine.


Related Discussions:- Calculate diameter of runner

Direct current, Direct Current ( DC ) :  The direct current flows through...

Direct Current ( DC ) :  The direct current flows through a wire in one direction and it remains same over time. The current from battery is always direct current. Direc

Calculate the vertical deflection - cantilever, Calculate the vertical defl...

Calculate the vertical deflection: Calculate the vertical deflection at the tip of the cantilever shown in Figure Figure Solution Measuring the distance x f

Explain the information phase of radial drilling machine, Information Phase...

Information Phase: Step: To secure all and complete information and gather facts and from best sources.   Our project is selected based on the current problem face by the

Complete outer clutch lugs for deep cuts, Complete outer clutch lugs for de...

Complete outer clutch lugs for deep cuts : Visually check for any deep cuts formed on the outer complete clutch lugs.

Reactions at point while the system is rotating, Reactions at point while t...

Reactions at point while the system is rotating: 8 kg ball is mounted on a horizontal bar associated to a vertical shaft. Neglecting the mass of the bar and shaft what are the

Sum of horizontal and vertical components, Sum of horizontal and vertical c...

Sum of horizontal and vertical components: The two forces shown in the figure, are to be replaced by an equivalent force R applied at P . Locate point P by finding its d

Evaluate the stream function, Evaluate the stream function at point (2, 3) ...

Evaluate the stream function at point (2, 3) for a two dimensional flow given by U = 5x 3           v = - 15x 2 y Evaluate the velocity potential function for a two dimension

Power sources for arc welding, POWER SOURCES FOR ARC WELDING Electric ...

POWER SOURCES FOR ARC WELDING Electric arc welding processes constitute a majority of all the welding processes. Most of the weldable materials can be joined by arc welding. D

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd