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gas turbine power plant has an output of 10,000 kW with electrical and mechanical losses of 600 kW. The overall thermal efficiency of the unit is 25 %. The gas turbine exhausts to a waste heat recovery boiler which is 75 % efficient. The steam from the boiler drives a steam turbine-generator which has an overall heat rate of 11,605.62 kJ/kW-hr. Steam turbine unit auxiliaries require 880 kW. Find (a) output of the steam turbine generating unit in kW, (b) the net heat rate in kJ/KW-hr of the combined cycle, (c) plant thermal efficiency of the steam turbine-generator plant, and (d) overall thermal efficiency.

gas turbine power plant has an output of 10,000 kW with electrical and mechanical losses of 600 kW. The overall thermal efficiency of the unit is 25 %. The gas turbine exhausts to a waste heat recovery boiler which is 75 % efficient. The steam from the boiler drives a steam turbine-generator which has an overall heat rate of 11,605.62 kJ/kW-hr. Steam turbine unit auxiliaries require 880 kW. Find (a) output of the steam turbine generating unit in kW, (b) the net heat rate in kJ/KW-hr of the combined cycle, (c) plant thermal efficiency of the steam turbine-generator plant, and (d) overall thermal efficiency.

Elements Of Electromagnetics
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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A gas turbine power plant has an output of 10,000 kW with electrical and mechanical losses of 600 kW. The overall thermal efficiency of the unit is 25 %. The gas turbine exhausts to a waste heat recovery boiler which is 75 % efficient. The steam from the boiler drives a steam turbine-generator which has an overall heat rate of 11,605.62 kJ/kW-hr. Steam turbine unit auxiliaries require 880 kW. Find (a) output of the steam turbine generating unit in kW, (b) the net heat rate in kJ/KW-hr of the combined cycle, (c) plant thermal efficiency of the steam turbine-generator plant, and (d) overall thermal efficiency.

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