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R-134a is throttled from 1200kPa and 40oC to 200kPa. It is known that heat of 5kJ/kg is lost from R-134a to the surroundings at 20oC. Determine (a) the enthalpy of R-134a at the exit; (b) the temperature at exit; (c) the entropy of R-134a at the exit; and (d) the entropy generation.
find the momentum and buoyant length scales.
a particle is moving along a straight line such that when it is at the origin it has a velocity of 8 ms part a if it
an important part of a project is to identify the key process input variables kpiv and key process output variables
water is pumped from a lower reservoir to a higher reservoir by a pump that provides 21 kw of shaft power. the free
a tank contains helium at 103degrees celcius and 10.9kpa gauge . the helium is heated in a process by heat transfer
a wheel barrow is used to lift a 200 lb load. the length from the wheel axle to the center of the load is 2 ft. the
saturated r-134a vapor at 100of is condensed at constant pressure to a saturated liquid in a closed piston-cylinder
hot exhaust gases leaving an internal combustion engine at 400oc and 150 kpa at a rate of 0.8 kgs is to be used to
a male reactor operator receives a whole body dose equivalent of 0.96 rem over a period of one week while working with
The diameter of the steel pin at C is 0.375in and the ultimate shear strength is 54ksi. If a factor of safety of 2.0 is required in both the strut and the pin at C. determine the maximum load P that can be supported by the structure.
Hazen-Williams Formula- Find the Diameter of a Pipe, The length of cast-iron pipe is to be 4200 ft., and the head causing flow is to be 12.6ft. After the pipe has been in service 5 years, it is expected to discharge water at a rate equal to 3.2 cf..
Evaluate the effect of the water spray on efficiency (net work out divided by heat input) and net power out per kg/s of dry air coming into the turbine.
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