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Cooling water enters a cooling tower at a rate of 1000 kg/h and 70 degree C. Water is pumped from the base of the lower at 24 degree C and some make-up water is added afterwards. Air enters the tower at 15 degree C, 50% RH, 1.013 bar, and is drawn from the tower saturated at 34 degree C, 1 bar. Calculate the flow rate of the dry air in kg/h and the make-up water required per hour. Ans. 2088 kg/h, 62.9 kg/h.
a steady-flow compressor is used to compress helium from 15 psia and 70of at the inlet to 200 psia and 600of at the
a solar collector receives solar radiation at a rate of 0.315 kw per m2 and delivers the heat to a storage unit whose
1. a hydro-electric plant is used to convert the potential energy of the water behind the dam into electricity. the
determine the magitudes of the horizontal and vertical reactions of the chair on the man at the instant . At this instant he has a speed of 6 m/s, which is increasing at 0.5 m/s^2.
Consider two-dimensional flow over the double-wedge airfoil shown. Find the lift and drag per meter span acting on the airfoil and sketch the flow pattern. Find the pressure acting on all surfaces.
an aluminum alloy specimen of .562 diameter and 2gauge length was subjected to loads p resulting in gauge lengths l as
consider two identical rooms one room has a refrigerator in it the other does not. all the doors and windows in each
a machine of mass 20 kg is acted upon by a harmonic force having a maximum value of 25 n at a frequency of 120
the power output of a steam turbine is 30 mw. determine the rate of steam flow in the turbine for saturated steam
estimate the tensile strength of the wire and the work required to take 1m3 of the wire to the point of necking. the
two tanks a and b are connected by a short section of pipe with a valve that is initially closed. both tanks are
develop equations which may be solved to give the final temperature of the gas remaining in a tank nbspafter the tank
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