A simple steam power cycle uses solar energy for the heat input. Water in the cycle enters the pump as a saturated liquid at 40°C, and is pumped to 2 bar. It then evaporates in the boiler at this pressure, and enters the turbine as saturated vapour. At the turbine exhaust the conditions are 40°C and 10% moisture. The flow rate is 150 kg/h. Determine (a) the turbine isentropic efficiency, (b) the net work output (c) the cycle efficiency, and (d) the area of solar collector needed if the collectors pick up 0.50 kW/m 2
In: Mechanical Engineering
Product Design and Development (6th Edition)
Develop several concept sketches for a common product. Try designing the product form both “from the inside out” and “from the outside in.” Which is easier for you? Possible simple products include a stapler, a garlic press, an alarm clock, a reading light, and a telephone
In: Mechanical Engineering
Design a muff coupling to connect two shafts transmitting 40 kW
at 120 r.p.m. The permissible shear
and crushing stress for the shaft and key material (mild steel) are
30 MPa and 80 MPa respectively.
The material of muff is cast iron with permissible shear stress of
15 MPa. Assume that the maximum
torque transmitted is 25 per cent greater than the mean torque.
In: Mechanical Engineering
A long cylindrical object with diameter D=100cm (k=400 W/mK, Cp = 400 J/kg K, density = 9000 kg/m3) is put into an oven of 1100 K with convective
heat transfer coefficient h of 50 W/m2 K. The initial temperature of this object is 300 K. How much time does it take for the center of the object to reach
700K? How much time does it take for the surface of the object to reach 700K?
In: Mechanical Engineering
In: Mechanical Engineering
In: Mechanical Engineering
In: Mechanical Engineering
consider the IVP ( cos(x)sin(x) - xy^2)dx + (1-x^2)ydy = 0 , y(0) = 34
solve the IVP
answer))) 1156 = ???
In: Mechanical Engineering
What is the best mechanical pencil lead size (i.e. 0.5, 0.7 etc) and lead type (I.e. Hb etc) for engineering drawing (isometric and orthogonal) ?
In: Mechanical Engineering
Hydrolevel vs. ASME case study
What can engineering societies do to defend their goods once a conflict of interest is exposed?
Have ASME's reviewed conflict-of-interest procedures addressed the difficulties fully? Why or why not?
In: Mechanical Engineering
Hydrolevel vs. ASME case study
How could McDonnell and Miller, Inc. have evaded the conflict of interest?
In: Mechanical Engineering
Determine the resultant vector D when the three
vectors below are added together. Express your result in a
magnitude and direction.
A = 5kN@40*
B = 10kN@140*
C = 25kN@240*
In: Mechanical Engineering
In: Mechanical Engineering
what do you know about Schlumberger and their career?
why Schlumberger?
In: Mechanical Engineering
which of these methods can strengthen copolymers 1. Strain hardening (cold working) 2. Alloying 3. Annealing 4. Reduce grain size
In: Mechanical Engineering