Determine the maximum efficiency, Mechanical Engineering

Assignment Help:

A jet strikes tangentially a smooth curved vane moving in the similar direction as the jet, and the jet gets reversed in the direction. Prove that the maximum efficiency is slightly less than 60 percent. The following data relate to a Pelton wheel:

Head = 72 m,

speed of wheel = 240 r.p.m.,

speed , ratio = 0.45,

coefficient of velocity = 0.98,

shaft power of the wheel = 115 kW,

overall efficiency = 85%,

Design the Pelton wheel.


Related Discussions:- Determine the maximum efficiency

Shielding gas-argon - hydrogen mixtures, Argon - Hydrogen Mixtures A...

Argon - Hydrogen Mixtures Argon - hydrogen mixtures are employed in special cases, such as mechanised welding of light gauge stainless steel tubing, in which the hydrogen do

Define the application of abrasive jet cutting machines, Define the Applica...

Define the Application of Abrasive Jet Cutting Machines Cleaning purpose. Cutting fine lines. Machining semiconductors. Drilling and cutting thin section of har

Essentials of a good boiler , ESSENTIAL S OF A GOOD BOILER: -     Sho...

ESSENTIAL S OF A GOOD BOILER: -     Should be capable of producing the required Steam at   the required pressure for minimum fuel required. -     Should be capable of stan

Insulation for personnel protection, Q. Insulation for personnel protection...

Q. Insulation for personnel protection? Insulation for personnel protection shall be provided as follows on all piping and equipment adjacent to work platforms or other operati

Calculate the thermal efficiency of the cycle, An engine uses air as the op...

An engine uses air as the operating substance. At the beginning of compression the pressure is 90 KN /m 2 and the temp. is 40 0 C. During the adiabatic compression, the volume is

Postweld heat treatment, Q. Postweld heat treatment? When the equipment...

Q. Postweld heat treatment? When the equipment data sheet specifies post-weld heat treatment either for service conditions or code requirements, welding, hammering (peening), o

Gover nor, prove that the sensitiveness of a proell governor is greater tha...

prove that the sensitiveness of a proell governor is greater than that of a porter governor

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