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Basic Mechanical Engineering by Pravin Kumar

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7

Introduction to Heat Transfer

Chapter Objectives

In this chapter, you will learn about:

  • Modes of heat transfer
  • Heat transfer through composite walls
  • Heat transfer through cylinder and sphere
  • Heat exchangers
  • Parallel and counter flow heat exchangers
  • Cross flow and multi-pass recuperators
7.1  INTRODUCTION

This chapter deals with different modes of heat transfer which are usually classified as conduction, convection and radiation. From the second law of thermodynamics, we know that the heat flows whenever there is existence of temperature difference or temperature gradient. Heat is a form of energy which is transferred from one body to another body at a lower temperature, by virtue of the temperature difference between the bodies. The concept ...

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