asoline at 77°F flows from a pressurized upper tank to a vented lower tank as shown in the figure below. A length of 1-inch Schedule 40 pipe connects the two tanks a   Calculate the air pressure (in psi) above the gasoline in the upper tank that will result in a flow rate of 35 gpm into the lower tank for the dimensions shown The head loss due to pipe friction is 52.8 feet and you DO NOT need to calculate this!   As the upper tank drains does the air pressure in the upper tank need to be neld constant to maintain the flow rate at 35 gpm? Briefly explain your answer.   C The pressurized upper tank is converted to an atmospheric tank

Can you do Part D of this question. Parts A - C have already been done.

Hydraulics

Transcribed Image Text:As part of a processing of biofuels, water is pumped into a circular tank with a diameter Dt. as shown in Figure Q3. The flowrate into the tank is Q₁ and the flowrate out is Q₂. When the vessel is heated, water evaporates. The average velocity at which the vapour rises across the entire tank is vevap- You may assume that water has a density of Pw, and vapour has a density of Pv. Acceleration due to gravity is g. 2₁ Vevap Q₂ => D₂ Figure Q3: Water being pumped through a heated evaporation tank. Find anexpressio  for the rate of chnage of the mass of water in the tank At time t= 0 the height of water in the tank is h0. Find an expression for the height as a function of time h(t) An alarm is triggered when the pressure at the bottom of the tank exceeds P alarm. Find an expression  for the time at which the alarm goes off

Question # 3 A 150 mm diameter pipe reduces in diameter abruptly to 100 mm. If the pipe carries water at 30 litres s', calculate the pressure loss across the contraction and express this as a percentage of the loss to be expected if the flow was reversed. Take the coefficient of contraction as 0.6.

Please give a detailed Handwritten solution.

The pressure through a section of pipe is 23 PSI and the velocity of the fluid is 3 ft/sec. If the velocity was increased to 5 ft/sec, what would the pressure drop be?

Cou

I need help with this question: Q. A sprinkler system pumps water through a large pipe inlet with a diameter (d1). The then breaks into N narrow Pipes (which have a diameter, d2, and a length, L2), before the water is released to the atmosphere, as shown in the figure. The entrance to the small pipe from the large pipe has a loss coefficient of KL. You may assume the flow is laminar and fully developed everywhere in the system, and that any changes in height are neglible.  (The viscosity is NOT negligible) a) Find an expressin for the velocity of water leaving the sprinkler b) Find an Expression for the gauge pressure at point A, a distance L1 upstream of the narrow pipes. Express your answer in terms of the flowrate, Q. c) The inner diameter of the first segment of the pipe is d1 = 10mm, the inner diameter of the second set of pipes is d2 = 1mm, with N = 25. The flowrate through the sprinkler is Q = 0.2 L/s. Flow in pipes typically becomes turbulent when the Reynolds number exceeds…

Determine the power requirement of the pump shown in Figure 3.0, assuming it has an efficiency of 88%. The system has a loss coefficient of 3.0 up to point A, and K =1.2 from point B to point C. Neglect any losses through the exit nozzle. Additionally, compute the pressures at points A and B. Water 15 m 2 cm 4 cm dia. 5 cm dia. Figure 3.0 400 kPa