Compute the maximum coefficient of heat pump
An air conditioner running with R-134a on a cycle executed under the saturation dome between the pressure limits of 0.8 MPa and 0.12 MPa. Calculate the maximum Coefficient of this heat pump.
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Half of the work produced by the engine is used to drive an internally reversible heat pump which is supplied with heat at 17 ° C and transfers heat to a house at 37 ° C. Find he net power output by the engine.
A NACA 2415 airfoil with a 0.6 m chord and a 2.5 meter span is being tested in a wind tunnel at standard sea-level conditions and a test section velocity of 175 m/s and an angle of attack of 8 degrees.
Sketch the two processes in series on a T-v diagram. Determine the overall change in internal energy, (Btu), of the water.
What is your reaction? Use a tolerance limit calculation as the basis for your judgment. Show minitab instructions if possible.
Develop an expression for vmax, average velocity, flow rate (Q) and shear stress at the wall (For flow rate calculations, assume a width of the channel to be w. Therefore the cross sectional area of the channel is wh).
Determine (a) the finite difference equations, (b) the nodal temperatures by solving the finite difference equations, and (c) the heat transfer rate and compare the result with analytical solution.
Water vapor initially at 3.0 MPa and 300°C is contained within a piston-cylinder. Calculate the compressibility factor Z at state 1 and comment
Determine the maximum steady-state hay temperature for dry hay (q,dot = 1W/m^3), moist hay (q,dot= 10W/m^3), and wet hay (q,dot= 100W/m^3). Ambient conditions are T inf =0 C and h = 25 W/m^2*K.
What is the difference between the pressure inside a soap bubble and atmospheric pressure for a 3-in-diameter bubble?
Cutting conditions are: v = 2.5 m/s, f = 0.3 mm/rev, and d = 2.0 mm. Determine: (a) cutting time, and (b) metal removal rate.
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