AUTMOTIVE TECH, TECH MANUAL & MIND TAP
6th Edition
ISBN: 9781305383180
Author: ERJAVEC
Publisher: CENGAGE L
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Textbook Question
Chapter 9, Problem 15RQ
Which of the following is an expression of how much of the heat formed during the combustion process is available as power from the engine?
Mechanical efficiency
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Consider the combined gas-steam power cycle. The topping cycle is a gas-turbine cycle that has a pressure
ratio of 8. Air enters the compressor at 300 K and the turbine at 1300 K. The isentropic efficiency of the
compressor is 80%, and that of the gas turbine is 85%. The bottoming cycle is a simple Rankine cycle
operating between the pressure limits of 7 MPa and 5 kPa. Steam is heated in a heat exchanger by the
exhaust gases to a temperature of 500°C and the isentropic efficiency of the turbine is 90 %. The exhaust
gases leave the heat exchanger at 450 K. Considering the mass flow rate steam as 1 kg/s, determine:
A) Net power, B) Total input heat, C) Total entropy generation, D) Energy efficiency, E) Exergy efficiency,
F) T-s diagram
Solve by EES
Compressor
Air -③
in
Exhaust
gases
Pump
Combustion
chamber
Gas
turbine
Gas cycle
Heat exchanger
Condenser
Steam
Steam
turbine
cycle
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Chapter 9 Solutions
AUTMOTIVE TECH, TECH MANUAL & MIND TAP
Ch. 9 - Prob. 1RQCh. 9 - Describe what takes place during the four strokes...Ch. 9 - As an engines compression ratio increases, what...Ch. 9 - What test can be performed to check the efficiency...Ch. 9 - Describe tappet noise.Ch. 9 - Which of the following statements about engines is...Ch. 9 - Which stroke in the four-stroke cycle begins as...Ch. 9 - True or False? In an HCCI engine, combustion...Ch. 9 - Which of the following is not a true statement...Ch. 9 - True or False? SAE mandates that engine, when...
Ch. 9 - Technician A says head gasket thickness has an...Ch. 9 - Prob. 12RQCh. 9 - The stroke of an engine is the crank throw half...Ch. 9 - True or False? The camshaft is always located in...Ch. 9 - Which of the following is an expression of how...Ch. 9 - While diagnosing the cause for blue smoke from the...Ch. 9 - Prob. 2ASRQCh. 9 - While determining the cause for air leaking out of...Ch. 9 - While diagnosing the cause for an engine having...Ch. 9 - While looking at the results of an oil pressure...Ch. 9 - A vehicle is producing a sharp, metallic rapping...Ch. 9 - While conducting an engine vacuum test; Technician...Ch. 9 - While determining the most likely problem of an...Ch. 9 - When a customer states that black exhaust smoke is...Ch. 9 - Technician A says that if an engine had good...
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