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Air enters the evaporator section of an air-conditioner at 100 kPa, 27 C with a volumetric flow rate of 6 m^3 /min. R-134a enters the evaporator at 120 kPa with a quality of 0.3 and rate of 2 kg/min and it leaves as a saturated vapor at the same pressure. Determine (a) the exit temperature of the air and (b) the rate of entropy production (kW/K) for the process in two ways: (i) Assume the outer surface of the evaporator is insulated. (ii) Assume the outer surface is not insulated and heat is transferred from the surrounding medium which is at 32 C to the evaporator at a rate of 30 kJ/min.
a new containment vessel for nuclear waste is being tested by a group of engineersnbspworking for the u.s. department
calculate the escape speed from the earth for a 4800 kg spacecraft and determine the kinetic energy it must have at the
a four-cylinder spark ignition engine has a compression ratio of 8 and each cylinder has a maximum volume of 0.6l. at
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a random sample of 12 shearing pins is taken in a study of the rockwell hardness of the pin head. measurements on the
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water flows in a circular pipe. at one section the diameter is 0.3 m the static pressure is 260 kpa gage the velocity
a standardized procedure is expected to produce washers with very small deviation in their thicknesses. suppose that 10
Use Psychrometric chart to determine Latent portion
Consider a frictionless fluid with a density of 65 lbm/ft3. We describe this fluid as:
Determine the thermal efficiency of the cycle and the net specific work. Assume each turbine stage isentropic efficiency to be 99% and assume the FWH is open.
Determine the factor of safety against net section yield in the presence of the crack and determine the factor of safety against brittle fracture for the same conditions.
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