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A counter flow double pipe heat exchanger is to heat water from 20 degrees Celsius to 80 degrees Celsius at the rate of 1.2 kg/s. The heating is to be accomplished by geothermal water available at 160 degrees Celsius at a mass flow rate of 2 kg/s. The inner tube is thin-walled and has a diameter of 1.5 cm. If the overall heat transfer coefficient of the heat exchanger is 640 W/m^2K, determine the length of the heat exchanger required to achieve the desired heating.
an oil supertanker has a tank capacity of half a million metric tons of crude oil sg 0.86. assume that the ship can be
a diesel engine has a compression ratio of 20 and a cutoff ratio of 2. air is at 95 kpa and 290 k at the beginning of
A closed, rigid tank is filled with a gas modeled as an idea gas, initially at 27 degrees C and a gage pressure of 300 kPa. The gas is heated, and the gage pressure at the final state is 367 kPa. Determine the final temperature, in C. The local atmos..
two tanks tank a and tank b are seperated by a partion. initially tank a contains 2 kg steam at 1mpa and 300 celsius
What is the total change in velocity required to go from a 200 km altitude circular, Earth orbit to circular orbit with a radius of 384,000 km (the mean radius of moons orbit relative to the earth, but ignore the moons presence}?
a nozzle is attached to a horizontal pipe and discharges water into the atmosphere as shown in the figure. the inflow
the composite beam shown is fabricated by connecting two w6 x 20 rolled-steel members using bolts of 58-in. diameter
Air enters the turbine of a gas turbine at 1200 kPa and 1200 K, and expands to two stages. Between the stages, the air is reheated at a constant pressure of 350 kPa to 1200 K. The expansion through each turbine stage is isentropic.
A golf ball is driven off a tee that is elevated 30 ft above the fairway and hits the ground that is below 30 ft from the tee. The initial velocity of the ball is 120 ft/s at an angle of 40 degrees from the horizontal.
consider a one-dimensional plane wall with constant properties and uniform internal generation qdot. the left face is
Air at 22 kPa, 220K and 250 m/s enters a turbojet engine in flight at an altitude of 10,000m. The diffusor slows the air down to a very low speed relative to its inlet. The pressure ratio across the compressor is 12. The turbine inlet temperature is ..
a waste treatment pond is 50 m long and 15 m wide and has an average depth of 2 m. the density of the waste is 85.3 lb
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