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Air flowing through a tube of 75-mm diameter passes over a 150-mm-long roughened section that is constructed from naphthalene having the properties -4 flow rate and the average mixed outlet temperature to analyze the performance of the average (50 µ,m) diameter channel and concludes that flow rates and heat transfer coefficients are increased and decreased, respectively, by about 5% when forced convection occurs in microchannels. M = 128.16 kg/kmol and psat(300 K) = 1.31 X 10 bar.
Comment on the validity of the experimentalist's conclusion.
Determine the weight of kerosene
How does the boiling process at supercritical pressures differ from the boiling process at sub critical pressures?
a pure jet engine operates on an ideal cycle. the pressure ratio is 13 and the turbine inlet temperature 830 k.
5 lbm of air is compressed in a piston cylinder assembly from 1 bar 300k to 5 bar according to a polytropic process
It is required to design a low-voltage, high-current, shunt-excited DC motor for hoisting drive in industrial overhead crane system. The output power of the machine is expected to be between (20+X) hp. The copper losses in the machine should be be..
Determine the ideal launch vehicle that can put this orbiter into the parking orbit. (hint: you do not have to consider the Sun in this problem. Only SOI of the Earth and the Moon)
An Otto cycle and a Carnot cycle working between the same maximum and minimum temperature limits does not have the same efficiency, nor does a Rankine and the corresponding Carnot cycle have the same efficiency.
water is transferred at a rate of 2.1 cfs from an upper reservoir to a lower reservoir by a concrete pipe 3000 ft long.
A 200 kg crate is to be supported by the rope and pulley arrangement shown. Determine the magnitude and direction fo the force P that must be exerted on the freee end of the rope to maintain equillibrium.
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
a hole in an aluminum roof panel is 2.748 cm2 in area at 0.000degc. what is the magnitude of the change to its area
Explain the principles of project management with particular emphasis on:
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