A gas turbine power plant has an output of 12,500kW with electrical and mechanical loss of 900kW. The overall thermal efficiency of the unit is 30 percent. The gas turbine exhausts to a waste heat recovery boiler which is 75 percent efficient. The steam from the boiler drives a steam turbine-generator which has an overall heat rate of 10,200 kJ/kW·hr. Steam turbine unit auxiliaries require 950kW. Determine the following: 1. The thermal efficiency, in percent, of the Steam Turbine generator plant. a. 53.9 b. 155.7 c. 31.9 d. 91.1 e. 18.8 2. The overall thermal efficiency in percentile (%). a. 155.7 b. 31.9 c. 91.1 d. 18.8 e. 53.9 3. The net heat rate, in kJ/kW·hr, of the combined cycle. a. 3,404.92 b. 4,766.89 c. 6,673.65 d. 2,432.09 e. 9,343.11
A gas turbine power plant has an output of 12,500kW with electrical and mechanical loss of 900kW. The overall thermal efficiency of the unit is 30 percent. The gas turbine exhausts to a waste heat recovery boiler which is 75 percent efficient. The steam from the boiler drives a steam turbine-generator which has an overall heat rate of 10,200 kJ/kW·hr. Steam turbine unit auxiliaries require 950kW. Determine the following: 1. The thermal efficiency, in percent, of the Steam Turbine generator plant. a. 53.9 b. 155.7 c. 31.9 d. 91.1 e. 18.8 2. The overall thermal efficiency in percentile (%). a. 155.7 b. 31.9 c. 91.1 d. 18.8 e. 53.9 3. The net heat rate, in kJ/kW·hr, of the combined cycle. a. 3,404.92 b. 4,766.89 c. 6,673.65 d. 2,432.09 e. 9,343.11
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
A gas turbine power plant has an output of 12,500kW with electrical and
1. The thermal efficiency, in percent, of the Steam Turbine generator plant.
a. 53.9
b. 155.7
c. 31.9
d. 91.1
e. 18.8
2. The overall thermal efficiency in percentile (%).
a. 155.7
b. 31.9
c. 91.1
d. 18.8
e. 53.9
3. The net heat rate, in kJ/kW·hr, of the combined cycle.
a. 3,404.92
b. 4,766.89
c. 6,673.65
d. 2,432.09
e. 9,343.11
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