# TAILIEUCHUNG - Lecture Companion site to accompany thermodynamics: An engineering approach (7/e): Chapter 9 - Yunus Çengel, Michael A. Boles

## Chapter 9 - Gas power cycles. The objectives of Chapter 9 are to: Evaluate the performance of gas power cycles for which the working fluid remains a gas throughout the entire cycle, develop simplifying assumptions applicable to gas power cycles, review the operation of reciprocating engines, analyze both closed and open gas power cycles,. | Chapter 9 Gas Power Cycles Study Guide in PowerPoint to accompany Thermodynamics: An Engineering Approach, 7th edition by Yunus A. Çengel and Michael A. Boles Our study of gas power cycles will involve the study of those heat engines in which the working fluid remains in the gaseous state throughout the cycle. We often study the ideal cycle in which internal irreversibilities and complexities (the actual intake of air and fuel, the actual combustion process, and the exhaust of products of combustion among others) are removed. We will be concerned with how the major parameters of the cycle affect the performance of heat engines. The performance is often measured in terms of the cycle efficiency. Carnot Cycle The Carnot cycle was introduced in Chapter 5 as the most efficient heat engine that can operate between two fixed temperatures TH and TL. The Carnot cycle is described by the following four processes. Carnot Cycle Process Description 1-2 Isothermal heat .

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