A Rankine cycle is executed with steam expanding initially from 20 MPaa and 100 deg SH. Condensation occurs at T = 86.49 degree Celsius. All expansion and compression efficiencies are 90 %. Sketch the equipment layout and the TS diagram. Answer the following for (m = 10 + SN/10 ) kg/sec of steam circulated and fill up the blanks in the items below: 1. TS diagram with the cycle showing correct location of points with respect to saturation dome line with ne and nc = 90%. 2. If the generator efficiency = 95%, brake engine efficiency = 90% what is the brake work in KW? Answer: 3. Actual Steam Rate for the engine in Kg/KW-hr with efficiency values at item 2. Answer: 4. Heat rejected at the condenser in KW (Ideal) Answer: 5. Ideal Rankine engine efficiency (% ) Answer: 6. Ideal Rankine cycle efficiency using work of the pump and turbine values % Answer: 7. Actual Rankine cycle efficiency using pump and turbine work % Answer: 8. Actual Rankine cycle efficiency using Qa and Qr values % Answer: 9. Using enthalpy (not Cp) of cooling water that enters the condenser at 12 deg C and leaves at 21 deg C, find amount of cooling water needed by the condenser in kg/sec. (Actual) Answer: 10. RPM of the generator if the Torque measured at the prony brake 87662.66 N-m. Answer:
A Rankine cycle is executed with steam expanding initially from 20 MPaa and 100 deg SH. Condensation occurs at T = 86.49 degree Celsius. All expansion and compression efficiencies are 90 %. Sketch the equipment layout and the TS diagram. Answer the following for (m = 10 + SN/10 ) kg/sec of steam circulated and fill up the blanks in the items below: 1. TS diagram with the cycle showing correct location of points with respect to saturation dome line with ne and nc = 90%. 2. If the generator efficiency = 95%, brake engine efficiency = 90% what is the brake work in KW? Answer: 3. Actual Steam Rate for the engine in Kg/KW-hr with efficiency values at item 2. Answer: 4. Heat rejected at the condenser in KW (Ideal) Answer: 5. Ideal Rankine engine efficiency (% ) Answer: 6. Ideal Rankine cycle efficiency using work of the pump and turbine values % Answer: 7. Actual Rankine cycle efficiency using pump and turbine work % Answer: 8. Actual Rankine cycle efficiency using Qa and Qr values % Answer: 9. Using enthalpy (not Cp) of cooling water that enters the condenser at 12 deg C and leaves at 21 deg C, find amount of cooling water needed by the condenser in kg/sec. (Actual) Answer: 10. RPM of the generator if the Torque measured at the prony brake 87662.66 N-m. Answer:
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems
Section: Chapter Questions
Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....
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the value of SN is 25
Transcribed Image Text:A Rankine cycle is executed with steam expanding initially from 20 MPaa and 100 deg SH.
Condensation occurs at T = 86.49 degree Celsius. All expansion and compression efficiencies are 90 %.
Sketch the equipment layout and the TS diagram.
Answer the following for (m = 10 + SN/10 ) kg/sec of steam circulated and fill up the blanks in the
items below:
1. TS diagram with the cycle showing correct location of points with respect to saturation dome
line with ne and nc = 90%.
2. If the generator efficiency = 95%, brake engine efficiency = 90% what is the brake work in KW?
Answer:
3. Actual Steam Rate for the engine in Kg/KW-hr with efficiency values at item 2.
Answer:
4. Heat rejected at the condenser in KW (Ideal) Answer:
5. Ideal Rankine engine efficiency (% ) Answer:
6. Ideal Rankine cycle efficiency using work of the pump and turbine values % Answer:
7. Actual Rankine cycle efficiency using pump and turbine work % Answer:
8. Actual Rankine cycle efficiency using Qa and Qr values % Answer:
9. Using enthalpy (not Cp) of cooling water that enters the condenser at 12 deg C and leaves at 21
deg C, find amount of cooling water needed by the condenser in kg/sec. (Actual)
Answer:
10. RPM of the generator if the Torque measured at the prony brake 87662.66 N-m.
Answer:
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