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A spherical habitat is built under the Martian surface. There is power generation in the habitat. This causes the surface to be at a uniform temperature of 30°C. The Martian surface is at a uniform temperature of 10°C. Calculate the heat loss. Assume the habitat is 10m in diameter. The distance from the center of the habitat to the Martian surface is 6m in diameter. An aerogel is put on the surface above the habitat acting as insulation.
Assume the Martian surface has a thermal conductivity of k=0.8 W/m.°C.
An advanced-type supercritical power plant has turbine inlet steam at 7000 psia and 1400 F, double reheat at 1600 psia and 400 psia, both to 1200 F, and condenser at 1 psia. The three turbine sections have polytropic efficiencies of 0.93, 0.91, and 0..
a rugged instrument used frequently for monitoring gas velocity in smoke stacks consists of two open tubes oriented to
Provide 2 separate reasons based on thermo physical properties from the appendices in the back, that together help explain this large disparity among the 2 heat transfer coefficients:
an insulated and non-conducting tank of volume 1m3 is initially evacuated. it is connected by a valve to supply line
write down the equation for a streamline. in other words how is the shape of a streamline in terms of x y z related to
four vectors ab c and d are shown not to scale. vector a has magnitude 22.5 and acts at an angle of 14.9 degrees with
a reversible carnot heat engine has 1.00 lbm of air as the working fluid. heat is received at 740 degrees f and
Write the MATLAB program to find the maximum, minimum and average of the digits of part (a) using for loops. Execute the program and list the output. Note that you are not allowed to use MATLAB commands max(x), min(x) and mean(x), except for checking..
Assume a diffusion coefficient of 1 × 10-8 m2/s, that the concentrations at the high- and low-pressure sides of the plate are 2.4 and 0.6 kg of hydrogen per cubic meter of palladium, and that steady-state conditions have been attained.
air enters a compressor at 179 kpa and 290 k and exits at a temperature of 500.9 k. determine the power kw for the
a water pump is attached to an electric motor. the inlet and outlet diameters of the pump are the same. the volume flow
Calculate the work during the process. Explain whether the work is done on the system or by the system and determine what phase or phases are initially present in tanks A and B.
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