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One-half kilogram of water executes a Carnot power cycle. During the isothermal expansion, the water is heated until it is a saturated vapor from an initial state where the pressure is 1.5 MPa and the quality is 25%. The vapor then expands adiabatically to pressure of 100 kPa while doing 403.8 kJ/kg of work.
a) Evaluate the heat and work for each process, in kJ.
b) Evaluate the thermal efficiency.
consider an air standard otto cycle with a compression ratio of 8. the engine inlet conditions are p100 kpa t290k and
A 74 wt% Ni-26 wt% Cu alloy is heated to a temperature within the ? + liquid phase region. If the composition of the phase is 80 wt% Ni, using figure 10.3
an oven has five radiant heaters each one is rated at 15 kw. it should heat some 2-kg steel plates from 20 degrees
Write a simple Matlab script to obtain the sample mean values with n = 4 for a total of 2000 sample combinations. A sampling combination from the population can be obtained by using: rand sample (population, 4, true). For each combination, the sample..
Estimate the fugacity for each species in the following gases at 290 K and 800 bar: (a) Pure oxygen; (b) Pure nitrogen; (c) Oxygen and nitrogen in a 30% mol O2 and 70% mol N2 mixture using the Lewis-Randall rule, and (d) Oxygen and nitrogen mixture i..
a well-insulated rigid tank contains 5 kg of a saturated liquid-vapor mixture of water at 100 kpa. initially
water is flowing in a 2cm radius pipe with a parabolic velocity profile vxrvmax1-rro2 where ro is the radius of the
Water enters a 10-cm diameter pipe at a uniform velocity V, it leaves the pipe at a non-uniform velocity of u= 10(1 - r^2/0.01) m/s, where r is in meters. Using the equation derived in class (10-2-14) find the magnitude of V and the mass flow rate of..
Air enters an adiabatic compressor at 0.1 kg/s, 100 kPa, 25 °C and exits at 700 kPa. (a) Draw a schematic of the system. Determine (b) the minimum power input (kW) and (c) the entropy generation rate (kW/K)
For plain carbon steel and convection (h=50 W/m^2 K) to air at 500K, Ti=300k, with a slab geometry 0.2 m thick (2L), find Boat Number. For a Fourier number (based on l=0.1m) of 0.1, is the tearm series valid? Find the time
a 4 kg object traveling at 60 ms enters an insulated vat of 20 kg of incompressible fluid c 2.0 kjkgk and comes to
water vapor is cooled in a closed rigid tank from 540 degrees celsius and 100 bar to a final temperature of 270 degrees
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