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Liquid water at 120°F and a mass flow rate of 3 ×105 lb/h enters a cooling tower operating at steady state. Liquid water exits the tower at 80°F. No makeup water is provided. Atmospheric air enters at 1 atm with a dry-bulb temperature of 70°F and a wet-bulb temperature of 60°F. Saturated air exits at 110°F, 1 atm. Ignoring kinetic and potential energy effects, determine the mass flow rate of the cooled water stream exiting the tower, in lb/h.
during a race the dirt bike was observed to leap up off the small hill at a at an angle of 60o from the horizontal. if
heat transfer to a 1.5kg block of ice at -10 degrees celsius melts it to a liquid at 10 degrees celsius in a kitchen.
a mixture of methanol and water is to be separated in a flash drum operating at a pressure of 1atm. the feed rate is 25
consider a steam power plant that operates between the pressure limits of 5 mpa and 10 kpa. steam enters the pump as
One-half kilogram of pure water is heated in a frictionless piston-cylinder device, at a constant pressure of 200 kPa, from an initial temperature of 20oC to a final temperature of 400oC.
a 1.5 in-diameter bar has been machined from a steel 1050 su 100ksi sy 84ksi. this part is to withstand a fluctuating
An initially empty cylinder is filled with air from 70 F, 15 psia until it is full. Assuming no heat transfer is the final temperature larger, equal to or smaller than 70 F? Does the final T depend on the size of the cylinder?
a new dam project will require 48000 a year in maintenance costs after it is complete. these maintenance costs will
Determine for AF 5 15 and T 5 708F, the percent excess air and the amount of water vapor condensed, in lb per lbmol of fuel. Plot the amount of water vapor condensed, in lb per lbmol of fuel, versus T ranging from 70 to 1008F, for AF 5 15, 20, 25, 30..
10 kilogrms of steam is inside a piston-cylinder. the steam goes through an iso-thermal expansion from 500 kpa and 200
temperature in state college pa on 31st december 2012 was 22 f. if the barometric pressure was 100 kpa and the humidity
Determine the resultant of the parallel coplaner force system shown in fig
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