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

Stress, what is hoop stress

what is hoop stress

Limitations of gas tungsten arc welding (gtaw), LIMITATIONS OF GAS TUNGSTEN...

LIMITATIONS OF GAS TUNGSTEN ARC WELDING (GTAW) It Produces lower deposition rates than consumable electrode arc welding processes. It Requires slightly more skill as comp

Determine in flow stream, Derive and solve a model of an insulated water ta...

Derive and solve a model of an insulated water tank with a changing level (i.e., changing tank volume). There is only one in ow stream with a flow rate of 1 kg/sec for t The

Converying system, impact force equation of ship to jetty?

impact force equation of ship to jetty?

Explain the working of hydrostatic sensor paver machine, Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Production test rings, Q. Production Test Rings? The frequency for the ...

Q. Production Test Rings? The frequency for the tests shall be as follows: • One sample at the 10th joint • One sample at the 75th joint • One sample at the 300th join

Rotary converters, ROTARY CONVERTERS Historically, these type of power so...

ROTARY CONVERTERS Historically, these type of power sources were developed first for arc welding applications and even now these types are popular. These rotary converters are of

Calculate the amount sand-aggregate, Calculate the amount of cement, sand,...

Calculate the amount of cement, sand, aggregate, and water needed to create a concrete mix with a 28-day compressive strength of 34 MPa for a 10 m x 10 m x 0.25 m structure given t

Parallelograular law of forces and triangular of forces, two forces are act...

two forces are acting at a point''o'',determine magnitude and direction by using parallelogram law of forces and triangular law of forces

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