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

Green chemistry, what is green chemistry with diagram

what is green chemistry with diagram

Battery-electrical system , Battery: Battery is a device that produces dir...

Battery: Battery is a device that produces direct current (DC). The chemical energy of battery ingredients converts into electrical energy in the form of direct current. This is a

Gas tungsten arc welding (gtaw), GAS TUNGSTEN ARC WELDING (GTAW) Gas Tu...

GAS TUNGSTEN ARC WELDING (GTAW) Gas Tungsten Arc Welding (GTAW) is popularly known as Tungsten Inert Gas welding (TIG). In this process, an arc is struck between a non consumab

What are the advantages and disadvantages of induction motor, What are the ...

What are the advantages and disadvantages of induction motors? A coil of 500 turns is linked by a ?ux of 0.4 mWb. If the ?ux is reversed in 0.01 second, ?nd the e.m.f induced i

Engine oil replacement and top-up, Engine Oil Replacement and Top-up :   Th...

Engine Oil Replacement and Top-up :   The engine oil has to be changed at a periodic interval because after some point of time it loses its viscosity and cooling, anti rust, and se

Applied chemistry, hardness of bore well water is less than sea water .just...

hardness of bore well water is less than sea water .justif

Illustrate various kinds of control systems, Illustrate various kinds of co...

Illustrate various kinds of control systems. Illustrate several block diagram reduction rules with examples. Determine C/R by using block diagram reduction method.

project on machine design , can you help me to do my project on machine d...

can you help me to do my project on machine design,it is specific project with calculation and some draw.

Computer integrated manufacturing, the component of computer integrated man...

the component of computer integrated manufacturing with the diagram

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