PPT-Chapter 4: Heat Transfer from Extended Surfaces

41 Introduction and Types of Fins 42 Governing Equation of Fin 43 Heat Dissipation through Rectangular Fin 44 Heat Dissipation from Infinitely Long Fin. Governing Equation:. Dirichlet Boundary Conditions:. Solution:. Heat Flux:. Heat Flow:. temperature . is not . a function of . k. Notes:. . A. is the cross-sectional area of the wall . perpendicular. Heat Transfer. Energy transfer from a . HOTTER. object to a . COOLER. one. Heat Transfer. Energy transfer from a . HOTTER. object to a . COOLER. one. How is heat transferred? (3 Ways). Heat Transfer. Heat Transfer . is the transport of . thermal energy. due to a temperature difference across a . medium(s. ). mediums: gas, liquid, solid, liquid-gas, solid-gas, solid-liquid, solid-solid, etc.. Thermal Energy. This case of heat transfer happens in different situations.. It is complicated process occupies an important side in applied mathematics to find a solution for Fourier’s low as a partial differential . Fins and Extended Surfaces. 1. Chapter 3c : One-dimensional, Steady state conduction (with thermal energy generation) (Section 3.5 – Textbook). 2. 3.1 Implications of energy generation. Involve a local source of thermal energy due to conversion from another form of energy in a conducting medium.. LO3.1: Lesson . 1. : . . Type of Heat Exchangers (. Recuperators. ). Aim. LO3: To be able to Evaluate Heat Transfer Equipment.. Learning Outcomes. At the end of this session the students will be able to…. DESCRIBE the process that occurs in the following regions of the boiling heat transfer curve:. a. Nucleate boiling. b. Partial film boiling. c. Film boiling. d. Departure from nucleate boiling (DNB). How does heat energy get from the Sun to the Earth?. There are no particles between the Sun and the Earth so it CANNOT travel by conduction or by convection. . ?. RADIATION. How can we relate our new understanding to the greenhouse effect?. “L JJAM” aka “Dream Team” aka Team 3. CHBE446 02/02/18. HOT HOT HOT! . Background Theory. Conduction. Convection. Heat Exchangers. Photo Cred: Meghan. Heat Transfer. The physical process in which thermal energy is transferred from one object to another as a result of a temperature difference. Why is it windy at the seaside?. Cold air sinks. Where is the freezer compartment put in a fridge?. Freezer compartment. It is put at the top, because cool air sinks, so it cools the food on the way down.. . Eng. . Abdelrhman Essam. Free convection and Radiation. Convection . Convection Heat transfer can be classified into;. 1- forced convection . 2- free convection.. Introduction to free convection. Do now activity: . Describe the difference between the processes of conduction and convection.. GOOD PROGRESS:. Describe some sources of infrared radiation. Explain how energy is transferred by radiation. Dr. J. . Badshah. Professor and Head, Dairy Engineering. SANJAY GANDHI INSTITUTE OF DAIRY TECHNOLOGY. (Bihar Animal Sciences University, Patna). Email: ejazbadshah@gmail.com. Modes of Heat Transfer. Conduction. Shape Evolution of Heat Exchanging Surfaces… . P M V Subbarao. Professor. Mechanical Engineering Department. Forced Convection Cooling of Chips Using Air. Analytical Convective Heat Transfer. 1701 Newton’s law of cooling..