Three return steam lines in a chemical processing plant enter a collection tank operating at steady state at 1 bar. steam enters inlet 1 with flow rate of 2 kg/s and quality of 0.9. steam enters inlet 2 with flow rate of 2 kg/s at 200°c. steam enters inlet 3 with flow rate of 1.2 kg/s at 95°c. steam exits the tank at 1 bar. the rate of heat transfer from the collection tank is 40 kw. neglecting kinetic and potential energy effects, determine for the steam exiting the tank: (a) the mass flow rate, in kg/s. (b) the temperature, in °c.

e/c, where e is its total energy

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.