Question

1. There is a 2 mm layer of water on the floor of house. The water vaporizes
through a stagnant layer of air (2.5 mm thickness) above the water surface,
Under the condition of water vaporization, the water and air temperature are
assumed to be constant at 25.2°C. The vapor pressure of liquid water under
this condition is found to be 0.027 bar. The partial pressure of water vapor in
air at the end of air layer was measured to be 0.0244 bar.
i) Determine the diffusivity of water in air at 25.2°C and 1 atm using
Chapmann-Enskog equation
ii) Determine the flux of water vapor through air layer
iii) Calculate time requirement for the complete vaporization of liquid water if
the density of liquid water is 1000 kg/m3.​

Answer 1

Answer:

a spade is in iron blade with a wooden handle used by farmer for digging the soil the iron blade of the speed is fixed to the tight wooden handle which does not come 8 easily the handle is fixed to the blade by process of heating and cooling the iron blade of speed has ring and I that is a little similar than the thickness of the wooden handle the thick wooden handle does not get into the ring normal way to fix the handle into the ring is heated on Hi Tea on heating the ring expands and the wooden handle easily gets into expanded I of the Ring cold water is poured out the ring on cooling the ring contracts and fix well onto the handle in villages cards are used to carry loads cartwheel is made of the wooden fitted with an iron dream as type of iron dreams kus Agaram fans before IT fitter to wooden wheel is is light less than that the wooden wheel the iron Rim is heated expand and hot expanded the remix immediately fitted