Engineering, 19.02.2020 20:19 avelyp

Steam flowing at a mass flow rate of 2 kg /s enters an adiabatic and reversible highpressure (HP) turbine at 8 MPa and 520 ?C (State 1) and expands to a pressure of 800 kPa (State 2). A fraction of the steam (y) is extracted at State 2 and the remaining steam (1 ? y) expands in an adiabatic and reversible low-pressure (LP) turbine to 100 kPa (State 3). The remaining steam passes through a constant-pressure condenser and exits as saturated liquid at 100 kPa (State 4). An adiabatic and reversible pump increases its pressure to 800 kPa (State 5). Liquid leaving the pump at State 5 is mixed with the steam fraction (y) extracted at State 2 in a rigid, insulated mixing tank. Steam exits the mixing tank as saturated liquid at 800 kPa (State 6). a) Determine the fraction of steam (y) extracted at State 2. b) Calculate the total power (in kW) of the HP- and LP-turbines. c) Calculate the rate of entropy generation for the mixing tank.

Answers: 2

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:10

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Answers: 1

Answer

Engineering, 04.07.2019 18:10

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

Answers: 3

Answer

Engineering, 04.07.2019 19:10

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.

Answers: 2

Answer

Engineering, 04.07.2019 19:10

A)-in the process of engineering design, explain the contribution of material selection. b)- explain the procedure of synthesis as is employed in engineering design. c)- is there any relationship between ergonomics and engineering design? explain. d)- safety consideration in engineering design includes human, product and the enviroment . explain how safety will be incorporated into the design?

Answers: 3

Answer

You know the right answer?

Steam flowing at a mass flow rate of 2 kg /s enters an adiabatic and reversible highpressure (HP) tu...

Questions