You are designing a gas turbine engine that must provide 1.91 kW of output power. The efficiency of the engine is 0.57 times the efficiency of an ideal (Carnot) engine with the same high and low temperatures. You have determined that you can supply 8.77 kW of input heat to the engine at a temperature of 595 K. What is the exhaust temperature you should design for the engine? Give your answer in Kelvin to at least three significant digits.

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Question 11
You are designing a gas turbine engine that must provide 1.91 kW of output power. The efficiency of the engine is 0.57 times the
efficiency of an ideal (Carnot) engine with the same high and low temperatures.
You have determined that you can supply 8.77 kW of input heat to the engine at a temperature of 595 K.
What is the exhaust temperature you should design for the engine?
Give your answer in Kelvin to at least three significant digits.
Question 12
A small power plant is designed to generate (output) 8.32 kW of power (8.32x10³ J/s). The plant is powered by steam at 749 K with
the exhaust at 325 K.
This power plant is less efficient than an ideal engine, of course. It's efficiency is 51.1% of the efficiency of an ideal (Carnot) engine
with the same high and lower temperatures.
What is the magnitude of the heat that is exhausted by the engine each second?
Give your answer in kJ (10³ J) to at least three significant figures.
Your answer is a positive number, the magnitude of the output heat.
Transcribed Image Text:Question 11 You are designing a gas turbine engine that must provide 1.91 kW of output power. The efficiency of the engine is 0.57 times the efficiency of an ideal (Carnot) engine with the same high and low temperatures. You have determined that you can supply 8.77 kW of input heat to the engine at a temperature of 595 K. What is the exhaust temperature you should design for the engine? Give your answer in Kelvin to at least three significant digits. Question 12 A small power plant is designed to generate (output) 8.32 kW of power (8.32x10³ J/s). The plant is powered by steam at 749 K with the exhaust at 325 K. This power plant is less efficient than an ideal engine, of course. It's efficiency is 51.1% of the efficiency of an ideal (Carnot) engine with the same high and lower temperatures. What is the magnitude of the heat that is exhausted by the engine each second? Give your answer in kJ (10³ J) to at least three significant figures. Your answer is a positive number, the magnitude of the output heat.
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