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1. A pump operating at steady state receives saturated liquid water at 508C with a mass flow rate of 20 kg/s. The pressure of the water at the pump exit is 1 MPa. If the pump operates with negligible internal irreversibilities and negligible changes in kinetic and potential energy, determine the power required in kW.
2. A pump operating at steady state receives liquid water at 208C 100 kPa with a mass flow rate of 53 kg/min. The pressure of the water at the pump exit is 5 MPa. The isentropic pump efficiency is 70%. Stray heat transfer and changes in kinetic and potential energy are negligible. Determine the power required by the pump, in kW.
3. A pump operating at steady state receives liquid water at 508C, 1.5 MPa. The pressure of the water at the pump exit is 15 MPa. The magnitude of the work required by the pump is 18 kJ per kg of water flowing. Stray heat transfer and changes in kinetic and potential energy are negligible. Determine the isentropic pump efficiency.
The diffusivity of copper in a commercial brass alloy is 10^-20 m2/s at 500'C. The activation energy for diffusion of copper in this system is 195 kJ/mol. Calculate the diffusivity at 600'C.
I am interesting in seeing the equations to find the strengths of a aluminium 6061 tube at 36in x 3in x 3in with 1/4in wall. This is more of a review for me. Would like to see the equations at work. For an example, say I am building a device that req..
If one is a refrigeration cycle and the other is a heat pump cycle, what is the relation between their coefficients of performance?
How do human beings make economic decisions in engineering, business and personal contexts. What is entailed ineconomic decision making and the process
water is the working fluid in a regenerative rankine cycle. the pressure and temperature at the turbine inlet are 8mpa
a diffuser in a jet airplane intake system is instrumented to give readings of stagnation temperature and stagnation
The ternary system MgO-Al2O3-SiO2 contains the important low thermal expansion compound cordierite (Mg2 Al4 Si5 O18). How many grams of Al2O3 are required to prepare 1000g of cordierite?
in an effort to reduce the mass of an aluminum bulkhead for a spacecraft a machinist drills an array of holes in the
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of ammonia initially at 500 kPa with a quality of 98%. Expansion occurs to a state where the pressure is 150 kPa. During the process the pressure and specific volume are related by ..
A temperature transducer outputs 4 mA of current for 150oF and 20 mA current for temperature of 1oF, then find out Output current value for temperature of 90oF? If the temperature is 70oF, then what is the output current?
Consider two-dimensional flow over the double-wedge airfoil shown. Find the lift and drag per meter span acting on the airfoil and sketch the flow pattern. Find the pressure acting on all surfaces.
You can produce a parking token by two alternative methods. First, cut a 10 mm diameter billet to a length of 10 mm, and then closed-die forge it to the final size and shape (25 mm diameter). Second, you could start with a sheet of material, and stam..
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