The filtration is carried out for 15 min at a constant rate in a leaf filter and continued at constant pressure using a cake that is incompressible with a filter medium resistance that is negligible. This pressure is that attained at the end of the constant rate period. The volume collected during the constant rate period = volume collected at constant pressure, what is the total filtration time?
In: Mechanical Engineering
Cold air at temperature of 10 C and velocity of 3 m/s is moving parallel to a flat plate with the length of 6 m and surface temperature of 75 C. A) Find the transition location on the plate and the heat loss from the plate. B) Repeat part (A) for water at the same velocity and temperature. The flat plate is made from copper.
In: Mechanical Engineering
ENGINEERING HEALTH AND SAFETY
Describe the possible sources of dangers and the respective areas involved.
In: Mechanical Engineering
• How close to an edge can a Rockwell Test be made?
• Discuss conversions of hardness testing values.
• A Rockwell HRB92 is equivalent to a Brinell hardness using a 500 kg force with a 10 mm ball of?
In: Mechanical Engineering
In: Mechanical Engineering
The fully-developed, steady,Poiseuilleflow of a liquidina horizontal, circular cylinderwith no swirl (i.e., Vθ= 0)under certain simplifying assumptions is given by:
Vz = (−∆???)4?(R2 –r2)Vr = 0Vθ= 0Here, Ris the inner radius of the pipe and r, θand zare the (cylindrical) coordinates of any point inside the pipe.Apply the continuity equation in cylindrical coordinates (Appendix B.8 of the text), given by()()()0zr1rrr1t=+++zrVVVto this flow (giving reasons why you drop each term) and obtain an ordinary differential equation for Vr. Integrate your solution and apply appropriate boundary conditions to obtain Vr.
In: Mechanical Engineering
Engineering Health, Safety and Environment
List (with appropriate examples) of the following:
In: Mechanical Engineering
The mechanism shown is for a transfer conveyor. The driving link rotates counterclockwise at a constant rate of 25 rpm, and the box has a mass of 10 kg as shown. The mass of the driving link and the coupler are negligible. Conveyor friction is adequate to prevent box slipping in the position shown. The mass of the conveyor link is 15 kg and the center of gravity is at its midspan. The mass moment of inertia of the conveyor link relative to the center of gravity is 4 kg-m2. For β = 30֠, graphically determine the following:
In: Mechanical Engineering
A piston‑cylinder device initially contains 0.2 m3 of helium at 100 kPa and 25C. The helium is then compressed during a polytropic process (Pvn = constant). The final pressure is 270 kPa and the final temperature is 150C. Determine (a) the mass of the helium (kg), (b) the final volume (m3), (c) the poly tropic exponent n, (d) the work for the compression process (kJ), and (e) the heat transfer (kJ).
In: Mechanical Engineering
An aluminum alloy cylinder (2) is clamped between rigid heads by
two steel bolts (1), as shown. The steel [E = 200 GPa;
α1 = 11.7 × 10−6/°C] bolts
have a diameter of 20 mm. The aluminum alloy [E = 70 GPa;
α2 = 23.6 × 10−6/°C] cylinder has an
outside diameter of 145 mm and a wall thickness of 7 mm. Assume
that a = 625 mm, b = 735 mm, and c = 375
mm. If the temperature of this assembly changes by ΔT =
95°C, determine
(a) the normal stress in the aluminum cylinder.
(b) the normal strain in the aluminum cylinder.
(c) the normal strain in the steel bolts.
In: Mechanical Engineering
One of the major impacts of a large scale wind farm is the visual impact. Describe the visual impacts that can arise from large scale wind farms, methods of quantifying these and ways of mitigating them.
In: Mechanical Engineering
A steel part made from AISI 1050 is to be cooled from austenite temperature to the room temperature;
(a) draw the micro-structures step by step during cooling to room temperature;
calculate the total amount of (b) ferrite, (c) cementite, (d) pearlite
this is urgent please
In: Mechanical Engineering
Please compare the martensitic transformation in a binary TiNi based shape memory alloy and in a binary Fe-C alloy. Explain your answer with the necessary details.
In: Mechanical Engineering
A building has a calculated cooling load of 10 tons, of which 2.5 tons is latent load. The space is to be maintained at 72 F db and 50 percent relative humidity. Ten percent by volume of the air supplied to the space is outdoor air at 100 F db and 50 percent relative humidity. The air supplied to the space cannot be less that 55 F db. Assume barometric pressure at sea level, and using the Psychrometric analysis software, find:
(a) The quantity of air supplied to the space in cfm,
(b) The amounts of return air and outdoor air in cfm,
(c) The conditions and volume flow rate of the air entering the cooling coil, point 1.
(d) The capacity and SHF for the cooling coil.
Attach your design report showing the psychrometric analysis of the problem and conditions of state points.
In: Mechanical Engineering
write a FORTRAN 77 software programme for moving coil type linear compressor using R407c refrigerant in pulse tube refrigerator
In: Mechanical Engineering