Air flows steadily from a tank through a hose and exits to the atmosphere from a nozzle (3) as shown in the figure. Considering the pressure in the tank (1) remain constant at 10.0kPa (gage), determine the pressure in the hose (2) and the flow rate. D = 0.03m d = 0.01m P1 = 10.0kPa • (2) (3) (1) Air

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Air flows through a compressor under steady flow conditions. At suction V1=0.75m3/kg, v1=30m/s At discharge: V2=0.25m3/kg, v2=40m/s.. Determine the diameter ratio of the discharge pipe to that of the suction pipe. (Ans. 1:2)

Methane in the gaseous state flows at a rate of 0.072 m^3/s in a pipe at a temperature of 27°C and gauge pressure of 148.675kPa (point 1). The pipe is divided into two branches (point 2 and 3), as seen in the figure. If the exit velocity in pipe 3 is 12 m/s with a density of 1.9 kg/m^3, what is the flow rate and velocity in pipe 2? Consider that in section 2 the fluid is leaving with a temperature of 402°C and an absolute pressure of 175 kPa. We have an atmospheric pressure of 101.325 kPa and R_methane = 0.5182 kJ/kg ⚫K. (1) Inflow D1 D3=50mm D2=100mm (3) (2)

Air flows steadily from a large tank, through a hose of diameter D = 0.03 m and exits to the atmosphere from a nozzle of diameter d = 0.01 as shown. The pressure in the tank remains constant at 3.0 kPa and the atmospheric conditions are standard absolute temperature and pressure.  Determine the flowrate and the pressure in the hose.

Question 4: The bend with an outlet diameter (D₂) of 5 cm discharges freely as shown in figure below. If the pressure at section 1 = 150 kPa, assume the difference in elevation between section 1 and 2 is negligible and determine: 1. The flow rate in the system 2. The magnitude of reaction of the pipe in X-direction (Fx) only in kN, needed to hold the bend in place. D₁= 15 cm O 11 D₂# 5 cm 30°

Water flows through the vertical elbow in Figure 2 and exits to atmosphere. The pipe diameter d, = 10 cm while d, = 3 cm. At flow rate of 0.0153 m3/s the pressure at section 1 is 2.33 bar. If the weight of water and elbow is 30 kg, determine the magnitude and direction of force to hold the pipe in place. y 40° 2

Tank 1 Tank 2 g Question 1 Consider the flow of water (p= 10³ kg/m³, u = 10³ Pa-s) from tank 1 to tank 2. A centrifugal pump is installed in this piping system with length L = 300 m and diameter D = 40 cm cast-iron pipe. The water surface of tank 1 is 15 m higher than the water surface of tank 2. You may neglect minor losses but not major losses. The gravity cannot be neglected. Assume steady-state and no friction in the tanks. (a) Simplify the equation of the system curve Ap vs Q. Do not place numerical data. (b) Plot the system curve Ap vs Q (0 ≤Q≤2 m³/s). (c) Find the volumetric flow rate when the pump is not operating. (d) Find the power supplied to the water and to the pump if n = 0.9 and 1 m³/s. (e) Consider a pump: Ap = 106 105 Q², where Ap in Pa and Q in m³/s. Find the operating point. What is the minimum and maximum volumetric flow rate that this pump can deliver?

Only a&b