Liquid water and water vapor (steam) are mixed in a mixing chamber to raise the temperature of water. the chamber has two inlets and a single exit and operates at steady state. the following data are provided at the two inlets and one exit. inlet-1 (state-1): p=500 kpa, t=30 deg-c, a = 0.01 m2, vel = 10 m/s, v=0.001004 m3/kg; inlet - 2: (state-2): water vapor at p =500 kpa, vel = 20 m/s, a = 0.1 m2, v = 0.376 m3/kg; exit (state-3): hot water at p= 500 kpa, v=0.0010 m3/kg, a = 0.01 m2

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

The higher the astm grain size number, the finer the gran is. a)-true b)-false