# 低溫熱流學 Part I: Thermodynamics 授課教師：施陽正　博士 97 年 9 月 - PowerPoint PPT Presentation

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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

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1. 低溫熱流學 Part I: Thermodynamics 授課教師：施陽正　博士 97年9月

2. 1 CHAPTER Introduction and Overview

3. 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

4. 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

5. 1.Introduction to Thermal-Fluid Sciences • Application Areas of Thermal-Fluid Sciences

6. 1.Introduction to Thermal-Fluid Sciences

7. 1.Introduction to Thermal-Fluid Sciences

8. 2.Thermodynamics • Thermodynamics can be defined as the science of energy. • First law of thermodynamics • Second law of thermodynamics

9. 2.Thermodynamics

10. 2.Thermodynamics

11. 2.Thermodynamics

12. 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

13. 3.Heat Transfer

14. 3.Heat Transfer

15. 3.Heat Transfer

16. 3.Heat Transfer

17. 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).

18. 4.Fluid Mechanics

19. 4.Fluid Mechanics

20. 4.Fluid Mechanics

21. 4.Fluid Mechanics

22. 5.A Note on Dimensions and Units

23. 5.A Note on Dimensions and Units

24. 5.A Note on Dimensions and Units

25. 5.A Note on Dimensions and Units

26. 5.A Note on Dimensions and Units

27. 5.A Note on Dimensions and Units

28. 5.A Note on Dimensions and Units

29. 5.A Note on Dimensions and Units

30. 5.A Note on Dimensions and Units

31. 5.A Note on Dimensions and Units • Dimensional Homogeneity

32. 5.A Note on Dimensions and Units

33. 5.A Note on Dimensions and Units

34. 6.Closed and Open System

35. 6.Closed and Open System

36. 6.Closed and Open System

37. 6.Closed and Open System

38. 6.Closed and Open System

39. 6.Closed and Open System

40. 7.Properties of a System

41. 7.Properties of a System

42. 7.Properties of a System

43. 7.Properties of a System

44. 8.Solving Engineering Problems

45. 9. Problem Solving Technique • Step1: Problem Statement Step2: Schematic Step3: Assumptions Step4: Physical Laws Step5: Properties Step6: Calculations Step7: Reasoning,Verification,and Discussion

46. 9. Problem Solving Technique

47. 9. Problem Solving Technique

48. 9. Problem Solving Technique • A Remark on Significant Digits

49. 10. Conservation of Mass Principle

50. 10. Conservation of Mass Principle