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Air at 308C, 1 bar, 50% relative humidity enters an insulated chamber operating at steady state with a mass flow rate of 3 kg/min and mixes with a saturated moist air stream entering at 58C, 1 bar with a mass flow rate of 5 kg/min. A single mixed stream exits at 1 bar. Determine
(a) the relative humidity and temperature, in 8C, of the exiting stream.
(b) the rate of exergy destruction, in kW, for T0 5 208C.
Neglect kinetic and potential energy effects.
a brass rod .002 in. in diameter and 10 in. long is loaded in tension with 800lb. assume this load is within the
A high-strength cast-iron bar 8 in. in diameter is being turned on a lathe at a depth of cut d=0.050 in. The lathe is equipped with a 15-hp electric motor and has a mechanical efficiency of 80%. The spindle is 500 rpm. Estimate the maximum feed that ..
a 500w cylindrical resistance heater is 1m long and 0.5cm in diameter. the resistance wire is placed horizontally in
a horizontal pipe has an abrupt expansion from d1 8 cm to d2 16 cm. the water velocity in the smaller section is 10
a rankine cycle power plant is to be used as a stationary power source for a polar research station. the working fluid
a projectile enters a resisting medium a x 0 with a initial velocity of vo 900 fts and travels 4 in. before coming to
A refrigeration cycle maintains a clean room at 68o F by removing energy entering the room by heat transfer at the rate of 0.21 Btu/s. The cycle rejects energy by heat transfer to the outdoors where the temperature is 80o F. Assume steady state opera..
the structure of a house is such that it loses heat at a rate of 4825 kjh per degree celcius difference between the
Atomic radius and atomic weight of niobium are 0.143nm and 92.91 g/mol respectively. Calculate Nb density assuming (1) FCC, and (b) BCC crystal structures. Compare the values with t the available Nb density from the textbook (Materials Science and En..
a pure jet engine propels an aircraft at 250 ms through air at 45 kpa and -13 degc. the inlet diameter of this engine
Air enters the compressor of an ideal cold air-standard Brayton cycle at 100 kPa, 300 K, with a mass flow rate of 6 kg/s. The compressor pressure ratio is 10, and the turbine inlet temperature is 1400 K. For k 5 1.4, calculate
A “friend” asks you to construct the phase diagram for a new binary alloy of A and B. The clues are: (i) A and B are completely immiscible in each other and no solid solutions exist in the diagram, (ii) no stoichiometric compounds exist in the diagra..
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