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Ir. Dr. Suhaimi Hassan

Tel : 05-3687153

Room No : 18-03-07

Email : suhaimiha@petronas.com.my

ME Thermodynamics II

MCB 2063

SEMESTER SEPT 2013

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Course Outline

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Lesson Plan

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Lesson Plan

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Chapter 9 Gas Power Cycles

Chapter 10Vapour and Combined Power Cycles

Chapter 11Refrigeration Cycles

Chapter 14Gas Vapour Mixtures and Air Conditioning

Chapter 15Chemical Reactions

Introduction - Synopsis

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Introduction

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Steam Turbines

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Gas Turbines

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Gas/Steam Turbines

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Two important areas of application for thermodynamics :power generationand refrigeration, both operated by

thermodynamics cycles

Thermodynamic cycles can be divided into two : powercycles, and refr igeration cycles

The devices or systems used to produce a netpower outputare called engines or turbineoperated on power cycles

The devices or systems used to produce a refrigeration effectare called refrigerators, air conditioners, orheat pumps,

operated on refr igeration cycles

Introduction

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Engines are categorized as internal combustion (IC)and external combustion (EC) engines, depending on how

the heat is supplied to the working fluid.

In ICengine heat is supplied by burning the fuel within thesystem boundaries.Example : automobile engine

In ECengine heat is supplied to the working fluid from anexternal source such as a furnace. Example : power plant

Introduction

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The internal combustion engine is an engine in which thecombustion of a fuel (fossil fuel) occurs with an oxidizer

(air) in a combustion chamber

The In ICE, the expansion of the high-temperature and high-pressure gases produced by combustion apply direct force to

some component of the engine

The force is applied typically to piston (engine) and blade ora nozzle (turbine), transforming chemical energy into usefulmechanical energy

Introduction

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Introduction

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Internal Combustion Engine

car engineCombustion of fuel/air occurs in the

engines cylinder

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Introduction

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Internal Combustion Engine

turbineCombustion of fuel/air occurs in the

combustor/combustion chamber

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Introduction

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External Combustion Engine - boilerWorking fluid from an external source such

as a burner/furnace

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TheICEcan be divided into : reciprocating engine androtary engine or wankel engine

The reciprocating engine is common piston-cylinder device

that has proved in wide range of applications.

Internal Combustion Engines

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Reciprocating Enginesare classified as:

Spark-ignition (SI) engine where:

The combustion of the air-fuel mixture is initiated by aspark plug.

Otto Cycle is the ideal cycle for the SI Engine.

Compression-ignition (CI) engine where:

The air-fuel mixture is self-ignited as a result ofcompressing the mixture above its self-ignitiontemperature.

Diesel Cycle is the ideal cycle for CI Engine.

Reciprocating Engines