A pump draws a solution with a specific gravity of 1.50 from a storage tank through a 8 cm pipe. The velocity in the suction pipe is 1.2 m/s. The open end of the 5 cm discharge pipe is 15 m above the top of the liquid in the storage tank. Friction head losses are found to be 25 Nm/kg. What is the power required by the pump?

# Question on Thermodynamics-Steady Flow Energy Equation

Power required for the pump is 1.14 KW

You are close enough. The answer is 1.6 kW. Recheck your calculations once.

Is my steps are correct sir?

I rechecked the calculation, i did not do any mistake on the calculation part. kindly share the solution sir.

sir, i am getting 1.6 KW as answer if i add the friction head loss to the section 2, instead of subtracting it from section 2. I subtracted friction head loss on the assumption that the head is lost due to friction on section 2

i understood it sir.

Why did u subtract head loss from section 2? Can you explain.

Because, I thought that friction would not add any energy into section 2 as it is reducing or obstructing the flow of fluid. That is why I thought it should be subtracted, but now I understood it sir