Problem 1a) In an open vessel, a certain volume V of water is perfectly agitated by means of animpeller 20 cm in diameter D. Consider a case in which the impeller steadily rotates at150 RPM (=revolutions per minute)Draw up a proper energy balance to find how temperature changes with time as aresult of the power input øw, also named P, by the revolving impeller.• This Pis given by the formula P = 3.5 PN°D° in which N denotes the impeller speed inrevolutions per second. Calculate P.When V = 120 litre and the specific heat of water amounts to 4.2 kJ/kgK, calculatethe temperature increase of the water after one hour of stirring.

Diameter of the impeller, D=20 cm,Speed of the impeller, N=150 rpm,Density of water, ρ=1000 kg/m3…

In an open vessel, a certain volume V of water is perfectly agitated by means of an impeller 20 cm in diameter D. Consider a case in which the impeller steadily rotates at 150 RPM (=revolutions per minute)

In an open vessel, a certain volume V of water is perfectly agitated by means of an impeller 20 cm in diameter D. Consider a case in which the impeller steadily rotates at 150 RPM (=revolutions per minute)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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