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Carbon dioxide (CO2) as an ideal gas executes a Carnot power cycle while operating between thermal reservoirs at 450 and 1008F. The pressures at the initial and final states of the isothermal expansion are 400 and 200 lbf/in.2, respectively. The specific heat ratio is k 5 1.24. Using the results of Problem 5.80 as needed, determine
(a) the work and heat transfer for each of the four processes, in Btu/lb.
(b) the thermal efficiency.
(c) the pressures at the initial and final states of the isothermal compression, in lbf/in.2
A very large vertical steel plate that is 1 cm thick is inductively heated with internal heat generation rate of 2x10^9 W/m3 . The plate is initially at 20°C, and the left and right surfaces are kept at 20°C throughout the heating process.
A piston-cylinder device has an initial contained volume of 0.1 ft3 and contains steam at an initial state of 160 psia, 500°F. The steam is then expanded to 20 psia, 0.65 ft3 and as a result of this process 0.50 Btu of heat is transferred to the syst..
you are swinging your younger sister in a circle of radius .9m. if her mass is 24kg and you arrange it so she makes one
an instrument having a resonance frequency of 1414 rads with a damping ratio of 0.5 is used to measure a signal of 6000
A water pump is required to pump 0.23ft3/sec of water at 60F at atm up to 100psi gage. of the pump has an estimated isentropic efficiency of 50%, determine the power required (HP) to drive the pump.
A sandbag is dropped from a balloon which is ascending vertically at a constant speed of 6m/s. If the bag is released with the same upward velocity of 6m/s when t=0s and hits the ground when t=8s, neglecting air resistance,
a small household refrigerator is used to cool 20 liters of water initially at 22 degrees c. the cop of the
An airplane with a plan form area of 15m^2 is moving through the air at True Airspeed(TAS) 150 km/.h at 3000 m altitude on a no wind standard day. Use Appendices for atmosphere data. What is the equivalent airspeed (EAS)?
A circular plate having a diameter of 300 mm is held perpendicular to an axisymmetric horizontal jet of air having a velocity of 40 m/s and a diameter of 80 mm as shown in Fig. 5-1.
The COP of vapor-compression refrigeration cycles improves when the refrigerant is sub cooled before it enters the throttling valve. Can the refrigerant be sub cooled indefinitely to maximize this effect, or is there a lower limit?
a ball rolls on the interior of a paraboloid of revolution given by x2y2cz. the angle of rotation about z axis is
what will be the final temperature in the tank? how much work will be accomplished over the course of the entire process?
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