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Steam enters a heat exchanger operating at steady state at 250 kPa and a quality of 90% and exits as saturated liquid at the same pressure. A separate stream of oil with a mass flow rate of 29 kg/s enters at 20C and exits at 100C with no significant change in pressure. The specific heat of the oil is c = 2:0/kJkg K. Kinetic and potential energy efects are negligible. If heat transfer from the heat exchanger to its surroundings is 10% of the energy required to increase the temperature of the oil, determine the steam mass flow rate, in kg/s.
a fixed quantity of air at t1 100oc and p1 243 kpa is heated at constant pressure in a piston-cylinder assembly to t2
a 4m long quarter-circular gate of radius 3 m and of negligible weight is hinged aboutnbspits upper edge a. the gate
Find the Temperature of the Refrigerant, A closed vessel with a volume of 2 ft^3 contains 5 lb of Refrigerant 134a. A pressure sensor in the tank wall reads 71.39 lbf/in.^2 (gage).
Explain the differences between fire-tube boilers and water-tube boilers and discuss the major factors which affect the choice of boiler type for particular applications.
a one kg metal part specific heat 0.7 kjkg k initially at 1234k is quenched in a bucket containing 20 gallons of water
there are two gears one with radius r and the other with radius 2.2r. the larger hear is subjected to an external
Determine the rate of metal removal when the wheel is engaged in the work and if the number of active grits per square inch = 200, determine the average chip length and the number of chips formed per time
water droplets at 87 0c in a cooling tower have an average diameter of 0.15 cm. the airstream which moves at a velocity
a steady-flow compressor is used to compress helium from 15 psia and 70of at the inlet to 200 psia and 600of at the
assume that you are responsible for the design of a wide-plate tension member built from a structural aluminum. the
a 2 mm diameter spherical air bubble is suspended in an insulating fluid . with a focused laser the bubble is heated so
Depron is a polystyrene foam, popular as a material for the manufacture of fast food trays and packaging. It is much lighter than balsa wood and can be cut with a sharp blade, sawn with a fine.
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