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

Arc welding power sources-arc characteristics, ARC CHARACTERISTICS In ...

ARC CHARACTERISTICS In order to understand the different output characteristics that are required by the welding power source it is necessary to understand the load which is f

MATLAB CODE FOR SOLVING HYBER REDUNDANT SNAKE ROBOT MOTIION, I need to have...

I need to have a matlab code with torque and force as differential constraint equations and tractrix constraint also included. The motion may be in a plane and with 5 or 6 links in

Cycloidal motion of follower, Derivation of displcement equation of cycloid...

Derivation of displcement equation of cycloidal motion related to follower

Driveshaft seals, DRIVESHAFT SEALS Packed gland Sealed by several lay...

DRIVESHAFT SEALS Packed gland Sealed by several layers of asbestos or cotton yarn     Sometimes used two boxes with intervening space separated by steam Problems:     T

Cover left crank case and check shifter drum, Open cover left crank case an...

Open cover left crank case and check shifter drum bolt and washer: Check shifter drum bolt torque and washer direction and avail ability.

Thermal conductivity-ceramics-refractory , Thermal Conductivity The am...

Thermal Conductivity The amount of heat passing throughout unit cross-section of a solid material in unit time for unit thermal gradient is termed as thermal conductivity. The

Mechanics, definition of open and cross belt drive

definition of open and cross belt drive

Calculate a quarterly delivery schedule, Gibson Ltd operates sportswear sto...

Gibson Ltd operates sportswear stores in Dublin and Cork and has set the following quarterly sales target for international and provlncial rugby shirts for 2013 per the attached sc

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