Determine the phase or phases in a system consisting of H2O at the following conditions and sketch p– and T– diagrams showing the location of each state.

(a) p 5 10 bar, T 5 179.98C.
(b) p 5 10 bar, T 5 1508C.
(c) T 5 1008C, p 5 0.5 bar.
(d) T 5 208C, p 5 50 bar.
(e) p 5 1 bar, T 5268C

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false

Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.