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Find the complete initial and final states for the following processes (T, P, v, h, u, s and phase) involving simple compressible substances. Interpolate where necessary:
a. Propane at 15 bar and 32°C goes isentropically to 11 bar
b. H2O as a saturated liquid at 150 oF goes isobarically to a quality of 73%.
c. Ammonia at 0°C and 1 bar goes isentropically to 0.4 bar
d. Ref-134a as a saturated vapor at 50 oF goes isenthalpically to 180 psia
e. H2O at 1 bar and 120°C goes isentropically to 20 bar.
A piston-cylinder device contains 0.005 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 600 kPa. Heat is transferred at constant pressure until the temperature reaches 200°C.
What is the velocity and rate of flow of the metal into the mold? Is the flow turbulent or laminar? (Pure aluminum density ρ = 2.7 g/cm3).
for other properties fixed in a rakine cycle raising the condenser temperature causes what changes in the work and heat
Describe the main kinds of social mechanisms that are used by people to communicate and collaborate.
The graph for the motion of a train as it moves from station A to station B is shown. Draw the a-t graph and determine the average speed and the distance between the stations.
review the logic used to develop brake systems of the motor vehicle historically. make critical analysis of each phase
A 4 m diameter sphere is embedded in insulation. The sphere contains a liquid-ice mixture maintained at 0 deg C. The ambient temperature surrounding the insulation is 25 deg C.
if the critical resolved shear stress for yielding in aluminum is 240kpa. calculate the tensile stress required to cause yielding when the tensile axis is [001]
The spool has a mass of 75 kg and a radius of gyration . It rests on the inclined surface for which the coefficient of kinetic friction is . If the spool is released from rest and slips at A, determine the initial tension in the cord and the angul..
A refrigerator with a COP of 3 removes 1.5 kW from the cold space at -9 °C while rejecting heat to the kitchen at 22 °C.
problem 1a horizontal steel pipe having a diameter of 5 cm is maintained at a temperature of 50degc in a large room
Calculation of percentage heat reduction, Water at 90 C flows through a 50mm bore steel pipe of wall thickness 8 mm. Ambient temperature is 18 C. Calculate the heat loss per metre length of pipe
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