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低溫熱流學 Part I: Thermodynamics 授課教師：施陽正 博士 97 年 9 月. 1. CHAPTER. Introduction and Overview. I. Introduction and Overview. Introduction to Thermal-Fluid Sciences Thermodynamics Heat Transfer Fluid Mechanics A Note on Dimensions and Units Closed and Open System
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低溫熱流學 Part I: Thermodynamics 授課教師：施陽正 博士 97年9月
1 CHAPTER Introduction and Overview
I. Introduction and Overview Introduction to Thermal-Fluid Sciences Thermodynamics Heat Transfer Fluid Mechanics A Note on Dimensions and Units Closed and Open System Properties of a System Solving Engineering Problems Problem Solving Technique Conservation of Mass Principle
1.Introduction to Thermal-Fluid Sciences • The physical sciences that deal with energy and the transfer, transport, and conversion of energy are usually referred to as thermal-fluid sciences or thermal sciences. • Thermal-fluid sciences: • Thermodynamics • Fluid mechanics • Heat transfer
1.Introduction to Thermal-Fluid Sciences • Application Areas of Thermal-Fluid Sciences
2.Thermodynamics • Thermodynamics can be defined as the science of energy. • First law of thermodynamics • Second law of thermodynamics
3.Heat Transfer • Energy exists in various forms. Heat is the form of energy that can be transferred from on system to another as a result of temperature difference. • The science that deals with the determination of the rates of such energy transfer is heat transfer. • Heat is transferred by three mechanisms: • Conduction • Convection • Radiation
4.Fluid Mechanics • Fluid mechanics is defined as the science that deals with the behavior of fluids at rest (fluid statics) or in motion (fluid dynamics).
5.A Note on Dimensions and Units • Dimensional Homogeneity
9. Problem Solving Technique • Step1: Problem Statement Step2: Schematic Step3: Assumptions Step4: Physical Laws Step5: Properties Step6: Calculations Step7: Reasoning,Verification,and Discussion
9. Problem Solving Technique • A Remark on Significant Digits
