熱傳學

This course aims to teach students the fundamental principles and concepts of heat transfer. The emphasis of this course will be on the understanding of the three modes of heat transfer, namely conduction, convection and radiation. Students will gain the ability to apply basic heat transfer concepts and principles in analyzing and solving engineering problems involving heat transfer processes. This course will be conducted in English.

Thermodynamics and Fluid Mechanics

無備註

Text Book Principles of heat and mass transfer, Global Edition. By F. P. Incropera, D. P. Dewitt, T. L. Bergman and A. S. Lavine. John Willey & Son, INC. References Heat and Mass Transfer: Fundamentals & Applications, 5th Edition by Y. A. Cengel and A. J. Ghajar, McGraw-Hill, 2014 Foundations of Heat Transfer, 6th Edition by F. P. Incropera, T. L. Bergman, A. S.. Lavine. John Wiley & Sons. 2013.

Quiz 20% Homework and assignment 10% Mid term Exam 35% Final Exam 35%

• Basic concepts of heat transfer

  This chapter establishes foundational knowledge by exploring key questions: What is heat transfer? How does it occur? Why is it significant? Its goals include fostering an understanding of fundamental concepts in heat transfer and demonstrating its application alongside the first law of thermodynamics for solving real-world engineering problems.

  講授：

  3

• Introduction to conduction

  This chapter explores one-dimensional, steady-state heat transfer, focusing on common geometries and thermal resistance concepts. It covers scenarios with and without internal heat generation, including the application of extended surfaces like fins for enhanced convection. Real-world applications include human body heat transfer, thermoelectric power generation, and micro- and nanoscale conduction.

  講授：

  3

• One-dimensional, steady-state conduction

  This chapter explores one-dimensional, steady-state heat transfer, focusing on common geometries and thermal resistance concepts. It covers scenarios with and without internal heat generation, including the application of extended surfaces like fins for enhanced convection. Real-world applications include human body heat transfer, thermoelectric power generation, fuel cell etc.

  講授：

  3

• Two-dimensional, steady-state conduction

  This chapter explores techniques for analyzing two-dimensional steady-state conduction problems, addressing the limitations of one-dimensional treatments. It covers alternative approaches for determining temperatures and heat rates, focusing on existing exact solutions for various simple geometries.

  講授：

  3

• Transient conduction

  This chapter focuses on time-dependent heat transfer problems, acknowledging that many real-world scenarios involve changes over time. It starts by discussing transient processes, where boundary conditions alter, leading to changes in temperature distribution until a steady-state is reached. The chapter aims to develop methods for determining temperature distribution and heat transfer during transient processes. It introduces the lumped capacitance method for simple cases and exact solutions for one-dimensional heat transfer in finite and semi-infinite solids. Additionally, it covers the transient thermal response of objects to changes in surface conditions.

  講授：

  3

• Introduction to convection

  This chapter shifts our focus from conduction to convection, exploring both its physical mechanisms and calculation methods. We introduce concepts such as advection and diffusion within convection. This chapter lays the groundwork for comprehending convection phenomena.

  講授：

  3

• External forced convection

  This chapter focuses on computing heat transfer rates in external flow scenarios, where boundary layers develop freely. Such flows occur over surfaces like flat plates or curved objects such as spheres or cylinders. We specifically address low-speed forced convection without phase change, omitting micro- or nanoscale effects within the fluid. Forced convection relies on external means to maintain fluid-surface motion, distinct from natural convection driven by buoyancy forces. Our main goal here is to determine convection coefficients for various flow geometries, aiming to derive specific forms of these coefficients' functions.

  講授：

  6

• Internal forced convection

  This chapter introduces internal flow convection transfer, contrasting it with external flow. Internal flow, like flow within pipes, is bounded by surfaces. Our aim is to understand internal flow phenomena and derive convection coefficients for practical conditions, focusing on low-speed forced convection without phase change, typical in industries like chemical processing and energy conversion. We cover hydrodynamic effects, boundary layer development, thermal boundary layer effects, fluid temperature variations, and provide correlations for estimating convection heat transfer coefficients in internal flow scenarios.

  講授：

  6

• Natural convection

  In this chapter, we explore free or natural convection, where fluid motion occurs without forced velocity, usually due to temperature-induced density gradients. Despite slower velocities, free convection is crucial, often being the primary heat transfer resistance in systems with multimode heat transfer. It affects various areas including power generation, electronics, thermal manufacturing, building temperature control, HVAC systems, combustion product dispersal, and environmental sciences. The chapter focuses on understanding the physical origins of buoyancy-driven flows and developing tools for related heat transfer calculations.

  講授：

  6

Principles of heat and mass transfer. F. P. Incropera, D. P. Dewitt, T. L. Bergman and A. S. Lavine. John Willey & Son, INC. Global Edition.

地點

EE475

時間

After lectures or by appointment

聯絡方式

engp4324@nycu.edu.tw