ZuoTi.Pro
Question

This is problem 6-10 from El-Wakil’s Powerplant Technology book -- it is required to evaluate the...

This is problem 6-10 from El-Wakil’s Powerplant Technology book -- it is required to evaluate the effects of changing surface condenser inlet water temperature on powerplant performance. Consider the ideal Rankine cycle and condenser of Prob. 6-9 (with 25,696 tubes) but the cooling water inlet temperature is changed from 70°F to 60°F. Calculate (a) the new exit cooling water temperature, in degrees Fahrenheit, (b) the new condenser pressure, in pounds per square inch absolute, and (c) the new plant power, in megawatts. Problem 6-9 for this question -- consider for simplicity an ideal Rankine cycle with turbine inlet and exit steam at 2500 psia and 1000°F, and 1 psia, respectively, and no feedwater heating. The steam mass flow rate is 2x106 lbm/h. The plant has two-pass surface condenser with 45-ft-long 7/8-in 18-BWG-type 304 stainless steel tubes. Cooling water enters the tubes at 70°F and 7 ft/s. With no flows into the condenser other than turbine steam.

engineering   Mechanical-Engineering   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Gven that Ce. Considein the danine cel 100012Fesom tta -4져 ble s( c DY@peo fa I. &千千116 bla bo ろlandard wates tei lola , CAca ก็ไ 26003600 ら726 OO 558-7 x 166 2600 5 7360 O 155 [ 7千 C.36) 31. 시안 416-853) 3600 5X16La at Cco (.ina 6ox 312 17.5070 | 1932= 578 129, 166 -町x106 = 3600 5x16XB-13 3606 36 O-004342 c6 - OA

0 0
Add a comment
Know the answer?
Add Answer to:
This is problem 6-10 from El-Wakil’s Powerplant Technology book -- it is required to evaluate the...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 12-3 A 250-MW vapor-dominated hydrothermal powerplant uses well steam that is saturated at 450 psia at...

    12-3 A 250-MW vapor-dominated hydrothermal powerplant uses well steam that is saturated at 450 psia at shutoff. The steam is throttled to a turbine inlet pressure of 140 psia. A direct-contact condenser operatęs at a pressure of 5 psia with a cooling-water inlet temperature of 48°F. The turbine polytropic efficiency is 0.80 and the turbine-generator combined mechanical-electrical efficiency is 0.90. Calculate (a) the steam mass flow rate, in pounds mass per hour, (b) the condenser cooling water mass flow rate,...

  • Tutorial Questions 1 1. Water is the working fluid in an ideal Rankine cycle. The condenser...

    Tutorial Questions 1.1. Water is the working fluid in an ideal Rankine cycle. The condenser pressure is kPa, and saturated vapor enters the turbine at 10 MPa. Determine the heat transfer rates, in kJ per kg of steam flowing, for the working fluid passing through the boiler and condenser and calculate the thermal efficiency.2. Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa ....

  • 2. Ideal Rankine cycle. The condenser pressure is 4 psia. Steam goes into turbine at 1100F...

    2. Ideal Rankine cycle. The condenser pressure is 4 psia. Steam goes into turbine at 1100F and 1300 psia. The mass flow rate of steam is 2,000,000 lb/h. Cooling water from a lake flows through the condenser at 95,000,000 lb/hr and comes into the condenser at 63F. Determine: a) The net power made (BTU/h) b) Rate of heat transfer in the condenser (BTU/h) c) Overall thermal efficiency (%) d) The outlet temperature of the cooling water (F)

  • 1. Water enters the constant 130-mm inside-diameter tubes of a boiler at 7 MPa and 65°C...

    1. Water enters the constant 130-mm inside-diameter tubes of a boiler at 7 MPa and 65°C and leaves the tubes at 6 MPa and 450°C with a velocity of 80 m/s. Calculate the velocity of the water at the tube inlet and the inlet volume flow rate. [5-14] 2. Air enters a nozzle steadily at 50 psia, 140°F, and 150 ft/s and leaves at 14.7 psia and 900 ft/s. The heat loss from the nozzle is estimated to be 6.5...

  • (thermodynamics) i need help with questions 5,6,7 5 Consider a steam power plant that operates on...

    (thermodynamics) i need help with questions 5,6,7 5 Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45MW. Steam enters the turbine at 7 MPa and 0Cand is cooed in the condenser at a pressure of 10 kPa by nuning cooling watr from a lake through the tubes of the condenser at a nte of 2000 kgs Show the cycle on a T-s diagam with respet to saturation lines,...

  • Consider a steam power plant that operates on the ideal regenerative Rankine cycle with a closed...

    Consider a steam power plant that operates on the ideal regenerative Rankine cycle with a closed feedwater heater as shown in the figure. The plant maintains the turbine inlet at 3000 kPa and 3508C; and operates the condenser at 20 kPa. Steam is extracted at 1000 kPa to serve the closed feedwater heater, which discharges into the condenser after being throttled to condenser pressure. Calculate the work produced by the turbine, the work consumed by the pump, and the heat...

  • 10-55 Consider a steam power plant that operates on the ideal regenerative Rankine cycle with a...

    10-55 Consider a steam power plant that operates on the ideal regenerative Rankine cycle with a closed feedwater heater as shown in the figure. The plant maintains the turbine inlet at 3000 kPa and 350°C and operates the condenser at 20 kPa. Steam is extracted at 1000 kPa to serve the closed feedwater heater, which discharges into the condenser after being throt- tled to condenser pressure. Calculate the work produced by the turbine, the work consumed by the pump, and...

  • Water is the working fluid in an ideal regenerative Rankine cycle with one closed feedwater heater....

    Water is the working fluid in an ideal regenerative Rankine cycle with one closed feedwater heater. Superheated vapor enters the turbine at 12 MPa, 480°C, and the condenser pressure is 6 kPa. Steam expands through the first-stage turbine where some is extracted and diverted to a closed feedwater heater at 0.7 MPa. Condensate drains from the feedwater heater as saturated liquid at 0.7 MPa and is trapped into the condenser. The feedwater leaves the heater at 10 MPa and a...

  • Solve the table for the combined gas-turbine vapor plant. 2 State 5 900 14 520 14 4300 187.6348 TOR p (psi) 187.6348 14 h (Btu/lbm) 6 9 State P(psi 60 1000 0 v (ft'/lbm) h (Btu/lbm) s (Btu/l...

    Solve the table for the combined gas-turbine vapor plant. 2 State 5 900 14 520 14 4300 187.6348 TOR p (psi) 187.6348 14 h (Btu/lbm) 6 9 State P(psi 60 1000 0 v (ft'/lbm) h (Btu/lbm) s (Btu/lbm- "R) meas (Ibm/h) 1 we--(Btu/h) | | | w..p (Btu/h) m,"p (Ibm/h) Qin (Btu/h) n 8.0 x 10 Gas turbine Turbine Air inlet Heat-recovery steam generator Turbine Vapor cycle Condenser Pump 9 10 i Cooling water Combined gas turbine-vapor power plant Figure...

  • 10-48 Consider a steam power plant that operates on the ideal regenerative Rankine cycle with a...

    10-48 Consider a steam power plant that operates on the ideal regenerative Rankine cycle with a closed feedwater heater as shown in the figure. The plant maintains the turbine inlet at 3000 kPa and 350°C; and operates the condenser at 20 kPa. Steam is extracted at 1000 kPa to serve the closed feedwater heater, which discharges into the condenser after being throttled to condenser pressure. Calculate the work pro- duced by the turbine, the work consumed by the pump, and...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT