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Steam at a pressure of 0.08 bar and a quality of 93.2% enters a shell-and-tube heat exchanger where it condenses on the outside of tubes through which cooling water flows, exiting as saturated liquid at 0.08 bar. The mass flow rate of the condensing steam is 3.4 x 10^5 kg/h. Cooling water enters the tubes at 150C and exits at 350C with negligible change in pressure. Neglecting stray heat transfer and ignoring kinetic and potential energy effects, determine the rate of entropy production in kW/K for steady-state operation
Note: Mass Flow Rate of cooling water is 9.1 x 10^6 kg/hr
Consider a short cylinder whose top and bottom surfaces are insulated. The cylinder was initially at a uniform temperature of Ti. At time t=0, the cylinder is suddenly subjected to a convection from its side surface to a surrounding fluid at temperat..
a tank has two rooms separated by a membrane. room a has 1 kg air and volume 0.5 m3 room b has 0.75 m3 air with density
A large plastic casting with thermal diffusivity 6.0*10-7 m2/s is removed from its mold at a uniform temperature of 150oC. The casting is then exposed to a high-velocity air stream such that the surface experiences a sudden change in temperature to 2..
A fluid particle flowing along stagnation streamline, as shown in Video V4.9 and Fig. P4.35, slows down as it approaches the stagnation point. Measurements of the dye flow in the video indicate that the location of a particle starting on the stagnati..
steam enters a steady flow turbine at 30mpa 1000degc with a flow rate of 10kgs. thirty percent of the inlet mass of
A fan accelerates air (at atmospheric pressure and 300K) from a rest to 5m/s. The fan mass flow rate of air is 1.2 kg/s. What is the minimum amount of power this fan must consume to operate under these conditions?
consider a carnot-cycle refrigerator with ammonia as the working fluid. heat is rejected from the ammonia at 20 deg c
By performing both an energy balance and an entropy analysis, calculate the change in entropy when 1 mole of saturated ethanol vapor condenses at its normal boiling point.
a new building to be located in a cold climate is being designed with a basement that has an l200 mm thick wall. inner
water flows steadily through a pipe of 20cm diameter which subsequently converges to a pipe of diameter of 5cm. the
while trapped in a cylinder 2.27 kg of air is compressed isothermally with a water jacket being used around the
a thin wall tube is subjected to combined tensile and torsional loading. find the relationship between the axial stress
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