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1. Two configurations are being considered in the design of a condensing system for steam at 1 atm employing a vertical plate maintained at 90°C. The first configuration is a single vertical plate L X w and the second consists of two vertical plates (L/2) X w, where L and w are the vertical and horizontal dimen- sions, respectively. Which configuration would you choose?
2. The condenser of a steam power plant consists of a square (in-line) array of 625 tubes, each of 25-mm diameter. Consider conditions for which saturated steam at 0.105 bars condenses on the outer surface of each tube, while a tube wall temperature of 17°C is maintained by the flow of cooling water through the tubes. What is the rate of heat transfer to the water per unit length of the tube array? What is the correspond- ing condensation rate?
a gas power cycle compresses air at 1 bar and 300 k state 1 through an adiabatic reversible compressor to 6 bar state
Compute all the stationary spot price equilibria, (x0 , x1, P , r , G, T), in which P = r = 1.
steam at 75kpa and 13 percent quality is contained in a spring loaded piston-cylinder device with an initial volume of
you have a heat engine that has a thermal energy resevoir available at 500c the thermal energy to heat the engine is at
an engine operates on an ideal cold air-standard otto cycle with a compression ratio of 8 r v1v2. heat transfer to the
consider the following finite difference approximation for the base point xi in a one-dimensional finite difference
In the system A + B activity coefficients can be expressed by the one-parameter Margules equation with A=0.5. The vapor pressures of A and B at T=80C are 900mmHg and 600mmHg respectively. Is there an azeotrope in this system at T=80C and if so, what ..
for each process of a closed system show the initial and final states on a properly-labeled t-s diagram evaluate the
an elevator is created by using a hose hanging from the top of a 10 m building. the hose is diverted into 4 jets at the
in an automotive gas turbine the centrifugal compressor is driven at 40000 rpm by an axial turbine. the compressor
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..
An air conditioning unit has two inlet air streams: a stream of return air from the building (2.25 kgs at 25C) and a steam of outside air (0.75 kg/s at 30 C). These streams are blended and then colled by a cooling coil to 20 C.
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