Engineering, 05.10.2019 14:30 Daud2020

Awell-insulated rigid tank contains 3 kg of saturated liquid-vapor mixture of water at 250 kpa. initially, three-quar- ters of the mass is in the liquid phase. an electric resistance heater placed in the tank is turned on and kept on until all the liquid in the tank is vaporized. assuming the surroundings to be at 25°c and 100 kpa, determine (a) the exergy destruction and (b) the second-law efficiency for this process.

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Answers: 3

Answer

Engineering, 04.07.2019 18:10

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

Answers: 1

Answer

Engineering, 04.07.2019 18:20

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.

Answers: 1

Answer

Engineering, 04.07.2019 18:20

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.

Answers: 2

Answer

You know the right answer?

Awell-insulated rigid tank contains 3 kg of saturated liquid-vapor mixture of water at 250 kpa. init...

Questions