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Air enters a pipe at 25 0C, 100 kPa at a flow rate of 36 m3/hr. A heater on the outside of the pipe draws 8 amps at a voltage of 120 V. All the heat from the heater is transferred to the air (well insulated and wall t is small). Assuming that the air behaves as an ideal gas and ignoring KE and PE, (a) determine the mass flow rate of the air in kg/s and (b) the temperature of the air at the exit.
a steam turbine operates with 1.6 mpa and 350 degree c steam at its inlet and saturated vapor at 30 degree c at its
two circular aluminum pipes of equal length l 24 in are loaded by torsional moments t. pipe 1 has outside and inside
100 lbm of water at 500 psi occupies 1.6 ft3. it undergoes a constant pressure process until the temperature is 600
a pistoncylinder arrangement has a load on the piston so it maintains constant pressure. it intially contains 1kg of
A mixture of dry air and water vapor is at a temperature of 21C under a pressure of 101.3 kPa.The dew point temperature is 15C.(Ps= saturation pressure at 15C=1.7044 kPa;Pd=saturation pressure at 21C=2.4861 kPa) find humidity ratio and relative hu..
The 60-W fan of a central heating system is to circulate air through the ducts. The analysis of the flow shows that the fan needs to raise the pressure of air by 50 Pa to maintain flow. The fan is located in a horizontal flow section whose diameter i..
a point p starts from rest and accelerates uniformly to a speed of 88ftsec after travelling 130 ft. find the
two carnot heat engines are operating in series such that the heat sink of the first engine serves as the heat source
an axial piston pump delivers 0.002 m3s at 3300 rpm. it has nine 16-mm diameter pistons arranged on a 135-mm piston
a steam power plant implements an ideal reheat rankine cycle. steam enters the inlet of the high-pressure turbine at 8
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of ammonia initially at 500 kPa with a quality of 98%. Expansion occurs to a state where the pressure is 150 kPa. During the process the pressure and specific volume are related by ..
a 4 kg object traveling at 60 ms enters an insulated vat of 20 kg of incompressible fluid c 2.0 kjkgk and comes to
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