Engineering, 11.03.2020 03:30, annamariaafowyhrq

Saturated water vapor leaves a steam turbine at a flow rate of 1.5 kg/s and a pressure of 0.51 bar. The vapor is to be completely condensed to a saturated liquid in a shell-and-tube heat exchanger that uses city water as the cold fluid. The water enters the thin-walled tubes at 17°C and is to leave at 57°C.
1. Assuming an overall heat transfer coefficient of 2000W/m^2K, determine the required heat exchanger surface area and the water flow rate.
After extended operation, fouling causes the overall heat transfer coefficient to decrease to 1000W/m^2K, and to completely condense the vapor, there must be an attendant reduction in the vapor flow rate.
2. For the same water inlet temperature and flow rate, what is the new vapor flow rate required for complete condensation?

Answers: 3

Show answers

Other questions on the subject: Engineering

Engineering, 03.07.2019 14:10, BardiFan

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.

Answers: 3

continue

Engineering, 04.07.2019 18:20, DroctorWellsfan

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Answers: 1

continue

Engineering, 04.07.2019 18:20, rocio5649

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa. s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)

Answers: 3

continue

Engineering, 04.07.2019 19:10, justkevin1231

Which of the following is the most important advantage of a large field of view? a. allows larger areas to be examined b. relieves eyestrain c. minimizes parallax errors. d. increases precision in proportion to the in- crease in field of view

Answers: 2

continue

Do you know the correct answer?

Saturated water vapor leaves a steam turbine at a flow rate of 1.5 kg/s and a pressure of 0.51 bar....