Water will be pumped from a reservoir free surface of which is at an elevation of “z1” to reservoir the free water surface of which is at “z2”. Both of the reservoirs’ free surfaces at atmospheric pressures.Design a piping system that transmits water from the lower reservoir to the upper reservoir at a volumetric flow rate of Q (m3 /h).

Q = 200 (m3/h) Za = 10(m) Zb= 60 (m) Zc = 75 (m) L1=200 (m) L2=125 (m) "Pipe material is "Commercial Stainless Steel" "

1) Consider necesssary fittings( valves, elbows….)

2) Given data and cost elements, determine the optimum pipe diameter of the system . In order to do this:

3) Write the energy equation between z1 and z2 by taking the major losses associated with the pipe, minor losses associated with the fittings, sudden contraction, and expansion regions inside the system and the pump total head rise ”hp” into account .

4) The average velocity of the water inside your piping system should be between 0.1 and 5 m/s. 5) Calculate the head rise “hp” that must be provided by the pump.

6) Choose a pump that provides a head rise of ”hp” (that you calculated) near its most efficient working flow rate at your given flowrate Q from the local manufacturer’s catalogues.

7) Find the cost of the pipe per one meter (TL/m) and unit electricity price ( TL/kWh). Neglect cost of the pump or pumps.

8) Calculate the cost of the system for one year: Obtain the graph which shows the variation of the capital cost, the energy cost and the total cost in function of the pipe diameter for working of the pump at a rate of 24 hours/day for one year.

9) If head loss from reservoir to pump inlet is 0.8 m, where should the pump inlet be placed to avoid cavitation for water at 15°C, pv= 1.71 kPa absolute?.

10)Check the absolute pressure at point C.

11) Draw a schematic representation of the system.

12) Give necessary technical drawings of the pipe and give schematic representations of the chosen minor loss elements.

13) Give the performance characteristics chart of the chosen pump and the technical drawing of it.

If back rake angle is zero . What will be rake angle

What is back rake angle

A machine cuts N pieces of a pipe. After each cut, each piece of the pipe is weighed and its length is measured. These two values are stored in a matrix called pipe where the first column is the length and the second column is the weight. Each row represents the weight and length of a cut piece of pipe. Ignoring units, the weight is supposed to be between 2.1 and 2.3, inclusive. The length is supposed to be between 10.3 and 10.4, inclusive.

Create a flow chart to do the following, using MATLAB syntax in all blocks:  Count how many rejects there are. A reject is any piece that has an invalid weight and/or length.  Return the number of rejects  Return the percentage of the total number of parts that are rejects

think of three inventions that could not be patented. One due to uselessness, one due to lack of novelity, and one due to being too obvious

Calculate the pressure losses across the different sections of drill pipe and annulus by using the Bingham plastic fluid model (You must draw the wellbore structure chart: without the chart, 50% points will be deducted) PROBLEM: MD/TVD: 12,031 ft Surface casing: 2,135 ft of 133⁄8-in. 61 lb/ft Intermediate casing: 10,786 ft of 95⁄8-in. 40 lb/ft Bit: 85⁄8 in. Nozzles (32nds in.): 11, 11, 11 Surface connections: Case 3 Drill pipe: 41⁄2 in., 16.6 lb/ft Drill collars: 390 ft of 7 in. x 21⁄4 in. Surface pressure: 3,000 psi Mud weight: 12.8 lb/gal Funnel viscosity: 42 sec/qt Plastic viscosity: 19 cP Yield point: 15 lb/100 ft2 Initial gel: 8 lb/100 ft2 Flow rate: 335 gpm

Spacecraft Design Dynamics Conceptual Question:

If I had an oblate spinning spacecraft (hockey puck shaped) spinning about it's z-axis (the body z-axis being normal to the top surface).

If I were to add an internal spinning wheel with that spin axis aligned with the body z (therefore a dual spinner spacecraft) does that change the existing stability at all?

My guess is that it makes it even more stable by adding more resilience to external torque, like a bicycle wheel rotated on its side, internal gyro, etc.

In a two-dimensional vortex flow, the fluid flows in circular paths around the center of the vortex. The magnitude of the velocity decreases with distance from the center. The stream function for a two-dimensional vortex centered at the origin is ψ=ln sqrt(x^2+y^2) where the x--y plane is horizontal and x and y are in meters. Show that continuity of the flow is satisfied and determine the magnitude of the horizontal velocity at A, where x=−0.2m, y=0.4m. Express your answer in m/s to three significant figures

10.8 What happens to an employee who passes through the socialization process?

10.7     What are the goals of a good induction program?

To increase load carrying capacity of a tube (ID: 40mm, OD: 45mm) it was determined in the last minute that it should be reinforced by combining it with a larger tube (ID: 45mm, OD: 50mm) through shrink fitting. Measurement after machining indicated the OD of the inner tube to be 45.012 mm and ID of the outer tube to be 44.950mm. A) Find the maximum torque the assembled tube can carry. B) After assembling, if the composite tube is subjected to a bending moment of 0.675 kN*m and a torque of 0.9 kN*m, find the factor of safety in both tubes using the ​Distortion Energy Theory. ​Assume S_​YT to be 415 MPa.

Discuss the effect of (i) grain size and (ii) phases amounts on the mechanical properties of the steel metal

An aircraft is in level flight at airspeed v(t) m/s with thrust T(t) N at cruising altitude. Suppose that at v0 = 250 m/s, the aerodynamic drag experienced by the aircraft at this altitude is:

Fd(v) = 0.25v 2 . (1)

Then, an extremely simplified model relating v(t) to T(t) is:

mv˙(t) + Fd(v(t)) = T(t), (2)

where m = 25000 kg. Assume v(t) is always positive.

Question 1. Linearize (2) at v0 = 250 m/s, and an appropriate nominal thrust T0. That is, create a new linear system model ˙δv + aδv = bδT that is accurate for small perturbations δv(t) = v(t) − v0, δT = T(t) − T0.

Question 2. Suppose we want the aircraft to fly at v0 = 250 m/s. However, precise modelling of drag is very difficult. Suppose in reality the dynamics are slightly different:

mv˙(t) + 0.23v(t) 2 = T(t). (3)

To control v(t) to be close to the reference 250m/s, you try using a proportional controller to control the thrust:

T(t) = T0 + k(v0 − v(t)), (4) with k = 100.

Here T0 is the value calculated in Question 1, but the controller is applied to the true dynamics (3). Find the final final value of v in: (a) open loop (i.e. just apply T(t) = T0), and (b) closed loop (using (4)). You may need to solve a quadratic equation. Recall that v(t) is assumed to be positive. Which one is better?

A 6 inch diameter water main in your town has become very rough due to rust and corrosion. It has been suggested that the flowrate through this pipe can be increased by inserting a smooth plastic liner into the pipe. Although the new diameter will be smaller, the pipe will be smoother. Will such a procedure produce a greater flowrate? List all assumptions and all calculations.

IMPORTANT NOTE: Please have the answer complete, CLEAR and computer generated!!

Air enters a 30-cm-diameter cooling section at 1 atm, 35 C, and 60 percent relative humidity at 120 m/min. The air is cooled by passing it over a cooling coil through which cold water flows. The water experiences a temperature rise of 8 C. The air leaves the cooling section saturated at 20 C.

(a) Determine the rate of heat transfer. Round your answer to the nearest tenth.

     Q_out = _____ kJ/min

(b) Determine the mass flow rate of the water. Round your answer to the nearest hundredth

     m_{cooling water} = _____ kg/min

(c) Determine the exit velocity of the airstream. Round your answer to the nearest ones place.

     V₂ = _____ m/min