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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
an ideal cold air-standard brayton cycle engine operates with air entering the compressor at 27 c. the pressure ratio
in usa 53 of total electric power is currently generated by coal-fired power plants. typically generation of 1 kwh of
a seesaw is 20 feet long with a fulcrum at the center. three children want to get on at the same time. the masses of
A launch approaches a wharf at a speed of 10.5 knots(=5.4m/s).The engine are put in the reverse when the launch is 10 m from the wharf, the retardation being 1.25m/s squared. will the launch come to rest before hitting the wharf.. If not, with wha..
25 of the cables have failed after 12 years and 55 failed after 16 years. if the distribution if normal what is the
a thin flat pate that is 0.2m by 0.2m on a side is oriented parallel to an atmospheric airstream having a velocity of
Design value for the molded friction material and steel disks to be used 0.06 and pressure max=1400kpa. Determine appropriate values for the disk inside dimmeter, the total number of disks and the actuating force?
1. air is compressed by a 30 kw compressor from p1 to p2. the air temperature is maintained constant at 25 oc
consider a steam turbine in which the steam enters at 23.26 mpa and 808 k with a flow rate of 17.78 kgs. the steam
A three-point bending test was performed on a glass specimen having a square cross-section of 15 mm length on each edge. The specimen fractured at a load of 4770 N when the distance between the support points was 41 mm.
the dimensions of a i beam are thicknesst flange width b10t and height 20t. determine the absolute maximum bending
An ideal duct carries water (incompressible fluid) from a height of 10m to 20m. The pressures at the entry and exit points are at 1000 Pa and 2000 Pa respectively. Calculate exit velocity if the velocity at entry is 10 m/s.
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