Determine the power output and the power specific speed

Assignment Help Mechanical Engineering

Reference no: EM131056982

A multi-jet Pelton turbine with a wheel 1.47 m diameter operates under an effective head of 200 m at nozzle inlet and uses 4 m3 /s of water. Tests have proved that the wheel efficiency is 88% and the velocity coefficient of each nozzle is 0.99. Assuming that the turbine operates at a blade speed to jet speed ratio of 0.47, determine

a. the wheel rotational speed;

b. the power output and the power specific speed;

c. the bucket friction coefficient given that the relative flow is deflected 165°;

d. the required number of nozzles if the ratio of the jet diametermean diameter of the wheel is limited to a maximum value of 0.113.

Reference no: EM131056982

Questions Cloud

Determine the minimum pipe diameter : Water is to be supplied to the Pelton wheel of a hydroelectric power plant by a pipe of uniform diameter, 400 m long, from a reservoir whose surface is 200 m vertically above the nozzles. The required volume flow of water to the Pelton wheel is 30..

More expensive excursion options : Captain Stubing of The Pacific Princess seeks to maximize the return for their scheduled 14 day tour of Europe and has a number of options available to him. He can ply his guests with alcohol, upsell them on fancier restaurant fare or include more ex..

Order of their expected from most active to least active : Locate the following metals on the periodic table: Magnesium, Potassium, and Sodium. Rank these metals in order of their expected from most active to least active.

Develop a supporting human resource plan : Develop a supporting human resource (HR) plan for an organizational strategy - Research a company that has undergone (or attempted to undergo) a shift in organization or culture within the past five years.

Determine the power output and the power specific speed : the required number of nozzles if the ratio of the jet diametermean diameter of the wheel is limited to a maximum value of 0.113.

Historical lead-gasoline spill : Preliminary analysis of a few soil samples from a parking lot with historical lead-gasoline spill and lead paint from the demolished buildings showed soil Pb concentrations between 60 and 700 mg/kg

Calculate the firm total assets turnover ratio : American Bacon Inc. financial statements are presented in the table below. Based on the information in the table, calculate the firm’s total assets turnover ratio. Cash and marketable securities $102,000 Accounts payable $287,000 Accounts receivable ..

Describe recent banking crisis that country has experienced : Describe the most recent banking/currency/debt crisis that the country has experienced. Present some statistics illustrating the severity of the crisis, its duration, and it output costs.

How does pirandello three-part act and breaking down : How does Pirandello's three-part act and breaking down of the fourth wall add to his exploration of truth or vary audience experience or point of view?

User Account

All Pages