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The outer surface of a vertical tube, which is 1 m long and has an outer diameter of 80 mm, is exposed to saturated steam at atmospheric pressure and is maintained at 50°C by the flow of cool water through the tube. What is the rate of heat transfer to the coolant, and what is the rate at which steam is condensed at the surface?
an air conditioner operating at steady-state takes in moist air at 27 oc 1 bar and 70 relative humidity. the moist air
an air-conditioner with refrigerant 134a as the working fluid is used to keep a room at 26 c by rejecting the waste
A rigid tank contains 8 kg of saturated vapor steam at 115 degrees c. The steam is cooled to the ambient temperature of 20 degrees c. (a) Sketch the process with respect to the saturation lines on a T-v diagram. (b) Determine the entropy change of th..
a 32000 kg airplane begins to climb at an angle of 3 degrees. its initial speed is 150 ms and after one minute its
A house rises to 35°C on a hot summer day. When the owner comes home they turn on the air conditioning system to cool the house down. Within 30 minutes the house is cooled to 20°C.
A turbine is designed to extract energy from a water source ?owing through a 10-cm-diameter pipe at a pressure of 800 kPa with an average velocity of 10 m=s. If the turbine is 90 percent ef?cient,
Air at 1000K and 400 kPa enters the insulated nozzle of a turbo-jet engine. Because the plane is flying at an altitude, the exit pressure is only 80 kPa. Calculate the exit velocity of the nozzle if its isentropic efficiency is 93%. Report answer in ..
advanced stress analysisin all but a very few vehicles today crush or crumple zones are employed as a method to reduce
A water filled manometer is attached to the inlet and the test section of a low speed wind tunnel which has the contraction ratio of 3. what would be the pressure difference between the inlet and the test section in terms of inches of water in order ..
Air enters an adiabatic nozzle at 5.18 MPa and 400K with a velocity of 20 m/s. The air exits at 2.00MPa. Determine the maximum exit velocity for this nozzle.
water vapor enters a compressor at 50 kpa and 150 c and leaves at 400 kpa with the same specific entropy as at the
A volume fraction f = 0.2 of silicon carbide (SiC) particles is combined with an aluminium matrix to make a metal matrix composite. The modulus of particle reinforced composites lies very close to the lower bound of Young's modulus for a composite.
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