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Steam condenses in a 2cm I.D. thin walled tube of 99% aluminium at 10atm pressure. There are circular fins of constant thickness, 3.5cm in diameter, and every 0.5 cm on the outside. The fins are 0.8mm thick and the heat transfer coefficient from them h=6 W/M^2K (Including both convection and radiation). What is the mass rate of condensation if the pipe is 1.5 m in length, the ambient temperature is 18 Degree C and h for condensation is very large? (mcond= 0.802 Kg/hr)
an important part of a project is to identify the key process input variables kpiv and key process output variables
a 20 degc brix sucrose solution at 70 degf is being pumped from a large open tank at a rate of 16 gallonsmin through a
A 90-N force is applied to the control rod AB as shown. Knowing that the length of the rod is 225 mm, determine the moment of the force about point B by resolving the force into horizontal and vertical components.
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 ..
the 2 Mg car increases its speed uniformly from rest to 25 m/s in 30s up the inclined road. determine the maximum power that must be supplied by the engine, which operates with an efficiency of 0.8. also, find the average power supplied by the eng..
determine the expected rating lives in hours of a 35 mm bore 02 and 03 series straight cylindrical bearings operating
consider a brayton cycle with the following given data pressure ratio 9.2 air at compressor inlet is at 25 deg f air
how much energy in ft-lbf btu and kj is required to accelerate my 3400 pound car from rest to a velocity of 60 mph on a
there are 4 octahedral sites and 8 tetrahedral sites in the fcc unit cell stated on slide 17-7 and feo has the nacl
a random sample of size 56 from a normal population showed a mean of 63 and a sum of squares of deviation from the
a rigid insulated tank that is initially evacuated is connected through a valve to a supply line that carries helium at
a cold air-standard otto cycle operates between temperature limits of 70 and 1500 f. calculate the thermal efficiency
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