2. A fan delivers 283.2 m³ / min of air with a density of 1.2 kg/m³ through a duct 5.08 cm by5.08 cm at the static pressure of 2.3 cm WG. If the power input to the fan is measured as 2.70kW, determine;(a) the air velocity, m/sec(b) the total head if the velocity head is 8.2 meters(c) the mechanical efficiency of the fan.

Answered: Image /qna-images/answer/e5b8d312-a72c-47af-8828-72bc20a81232.jpg

Answered: fan delivers 283.2 m³/min of air with a…

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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A pump draws water from a reservoir and conveys it to another reservoir 30 m above. The suction pipe is 100 mm in diameter and 10 m long while the delivery pipe is 100 mm in diamter and 150 m long. if the the velocity in the pipe is 3 m/s, the friction factor of the pipe 0.008, and the pump and motor efficiencies are 85 % and 92 %, respectively. Assume height of pump/motor negliglible. Q1. Calculate the gauge pressure at the pump's inlet (at C) (kN/m2) Q2. Calculate the gauge pressure at the pump's outlet (at D) (kN/m2) Q3. Calculate input power to motor (kW)
Water flows through a corner valve at a flow rate of Q=0.75 m³/s . The pressure just upstream of the valve is P₁ = 500 kPa and the pressure just downstream is P₂ = 300 kPa. The inside pipe diameters of the valve inlet and exit are respectively, D₁ = 5 cm and D₂ = 12 cm. If the flow through the valve occurs in a horizontal plane, determine the head loss, h₂ (in meters) and the rate of loss of available energy (in W) across the valve. D2 Di
60 degree F water flows through a horizontal turbine. The water speeds at the turbine inlet and the turbine outlet are identical. The water gage pressure at the turbine inlet is 46.4 psi while that at the outlet is 12.2 psi. Assume water frictional losses through the turbine are negligible. Deterimine the shaft work rate in ft*lb per slug of water passing through the turbine. Answer with a positive number if mechanical energy goes into the water and a negative number if mechanical energy comes out of the water as it passes through the turbine.

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