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A hollow steel sphere with .5 m inside diameter and a 2 mm thick wall contains water at 2 MPa, 250 C. The system (steel plus water) cools to the ambient temperature, 30 C. calculate the net entropy change of the system and surroundings for this process.
a vapor-compression refrigeration cycle employed in a heat pump uses refrigerant r-134a and provides 15 kw of heating.
a heat pump supplies 40 kw of heat to maintain the inside of a house at 25c in cold winter months when the ambient
The internal bending moment acting on the cross section of the channel strut has the magnitude and direction shown. First calculate zbar to locate the centroid C of the strut's cross sectional area.
consider uniform potential flow past an ellipse with thickness ratio t. use an appropriate joukowski transformation to
design a fire resistant safety sphere with diameter of 0.5m that will protect its combustible contents from fire which
as per the linked question how do you determine the location of the resultant? why is located 23 deep and how do you
Determine the specified data for water at the states indicated and locate each state on a P-v and T-v diagram.
the system is released from rest with no slack in the cable and with the spring unstretched. determine the distanced s
determine the microstructure for eutectoid steel that has undergone the following heat treatment. for each heat
Male an Isometric Drawing of the V stop shown in Figure. Use a suitable scale to depict the view well on an A3 drawing duet.
A pipe with OD 6.03cm, ID 4.93cm carries steam at 250deg C with h = 200 W/m^2.K The pipe is covered with 2.5cm of magnesia (85%) insulation followed by 2.5cm of polystyrene (k = .025 W/m.K The outer surface is exposed to air at T = 20 deg C with h = ..
What is the maximum allowable pressure if a factor of safety of 4 is to be used and what pressure would a strain of 40 pc indicate?
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