1. In a reheat cycle steam at 15 MPa, 500oC enters the engine and expands to 2 MPa. At this point the steam is withdrawn and passed through a reheater. It reenters the engine at 500oC. Expansion now occurs to the condenser pressure of 5 kPa. The steam flow is 150000 kg/hr, the generator efficiency is 96%, mechanicalefficiency of 80% and indicated steam rate of 5.5 kg/kWh. For actual engine, find the following:a. output power in kWb. brake steam ratec. brake thermal efficiencyd. combined engine efficiency2. An ideal reheat Rankine cycle operates between 8 MPa and 5 kPa with a maximum temperature of 600oC. Two reheat stages, each with a maximum temperature of 600oC are to be added to 2 MPa and 100 kPa. Calculate:a. turbine workb. heat added in the boilerc. heat added in the reheaterd. thermal efficiency 1. In a reheat cycle steam at 15 MPa, 500°C enters the engine and expands to 2MPa. At this point the steam is withdrawn and passed through a reheater. It re-enters the engine at 500°C. Expansion now occurs to the condenser pressure of 5kPa. The steam flow is 150000 kg/hr, the generator efficiency is 96%, mechanicalefficiency of 80% and indicated steam rate of 5.5 kg/kWh. For actual engine, find thefollowing:a. output power in kWb. brake steam ratec. brake thermal efficiencyd. combined engine efficiencyApplication 5An ideal reheat Rankine cycle operates between 8 MPa and 5 kPa with a maximumtemperature of 600°C. Two reheat stages, each with a maximum temperature of600°C are to be added to 2 MPa and 100 kPa. Calculate:a. turbine workb. heat added in the boilerc. heat added in the reheaterd. thermal efficiency

given data: steam flow=150000kh/hr=41.66kg/s generator efficiency ηg=0.96 mechanical…

Answered: 1. In a reheat cycle steam at 15 MPa,…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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1. In a reheat cycle steam at 15 MPa, 500oC enters the engine and expands to 2
MPa. At this point the steam is withdrawn and passed through a reheater. It reenters the engine at 500oC. Expansion now occurs to the condenser pressure of 5
kPa. The steam flow is 150000 kg/hr, the generator efficiency is 96%, mechanical
efficiency of 80% and indicated steam rate of 5.5 kg/kWh. For actual engine, find the
following:
a. output power in kW
b. brake steam rate
c. brake thermal efficiency
d. combined engine efficiency

2. An ideal reheat Rankine cycle operates between 8 MPa and 5 kPa with a maximum
temperature of 600oC. Two reheat stages, each with a maximum temperature of
600oC are to be added to 2 MPa and 100 kPa. Calculate:
a. turbine work
b. heat added in the boiler
c. heat added in the reheater
d. thermal efficiency

1. In a reheat cycle steam at 15 MPa, 500°C enters the engine and expands to 2
MPa. At this point the steam is withdrawn and passed through a reheater. It re-
enters the engine at 500°C. Expansion now occurs to the condenser pressure of 5
kPa. The steam flow is 150000 kg/hr, the generator efficiency is 96%, mechanical
efficiency of 80% and indicated steam rate of 5.5 kg/kWh. For actual engine, find the
following:
a. output power in kW
b. brake steam rate
c. brake thermal efficiency
d. combined engine efficiency
Application 5
An ideal reheat Rankine cycle operates between 8 MPa and 5 kPa with a maximum
temperature of 600°C. Two reheat stages, each with a maximum temperature of
600°C are to be added to 2 MPa and 100 kPa. Calculate:
a. turbine work
b. heat added in the boiler
c. heat added in the reheater
d. thermal efficiency

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