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As chief engineer of a large heat exchanger company, you are to prepare the preliminary design of a nonmixing heat exchanger that has a second law availability efficiency of at least 15.0%.
The two flow streams are to be liquid water, with one flow stream having a mass flow rate of 10 kg/s, entering at 10.0°C and leaving at 30.0°C.
The remaining variables (including the ground state) are not specified and are left to the discretion of the designer.
refrigerant 134a undergoes a process for which the pressure-volume relation is pvn constant. the initial and final
The dredger in Fig. P3.70 is loading sand (SG =2.6) onto a barge. The sand leaves the dredger pipe at 4 ft/s with a weight flux of 850 lbf/s. Estimate the tension on the mooring line caused by this loading process.
a large irrigation sprinkler unit mounted on a cart discharges water with a speed of 40 ms at an angle of 30 to the
Air enters a non-ideal gas turbine at T1 = 2290°F, P1 = 196 psia and exits at T2 = 1200°F, P2 = 14 psia. (a) Assuming constant specific heats evaluated at 1000F, find the turbine efficiency using the Air Tables.
Find the displacement response of the valve from its rest position when the cam applies the force F for the first time.
a power cycle operates between hot and cold reservoirs at 500k and 310k respectively. at steady state the cycle
A gas-turbine power plant operating on an ideal Brayton cycle has a pressure ratio of 6. The gas temperature is 350 K at the compressor inlet and 1450 K at the turbine inlet. Utilizing the air standard assumptions, determine (a) the gas temperature ..
Heat transfer per hour through a solid brick wall 6.5 m long, 3.1 m high and 300 mm thick is 3937 kJ/hr. If the coefficient of thermal conductivity of the brick wall is 0.88 W/mK and inner surface temperature is 4 deg. C, calculate the outer surfa..
a thin-walled tube is subjected to an axial force of 40 kn. if the tube elongates 3mm and its circumfrence decreases
sterling silver is a metal alloy containing silver and copper. calculate the composition of both elements in mass
Moist air at 32°C and = 77% enters the system and passes through a water spray, leaving the spray section cooled and saturated with water. The moist air is then heated to 25°C and = 45% with no change in the amount of water vapor present. For ..
Calculate whether a bar of this steel would fail by fatigue if it were subjected to a steady stress of 600 MPa and a cyclic stress of 500 MPa.
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