Principles Of The Theory Of Heat

xi should hope for "first and foremost" from any historical investigation, including his own, was that "it may not be too tedious. " II That hope is generally realized in Mach's historical writings, most of which are as lively and interesting now as they were when they appeared. Mach did not follow any existing model of historical or philosophical or scientific exposition, but went at things his own way combining the various approaches as needed to reach the goals he set for himself. When he is at his best we get a sense of the Mach whom William James met on a visit to Prague, the Mach whose four hours of "unforgettable conversation" gave the forty year old, well traveled James the strongest "impression of pure intellectual genius" he had yet received, and whose "absolute simplicity of manner and winningness of smile" captivated him completely. 12 Consider, for example, the first few chapters of this book, Principles of the Theory of Heat, which Mach devotes to the notion of temperature, that most fundamental of all thermal concepts. He begins by trying to trace the path that leads from our sensations of hot and cold to a numerical temperature scale.

This text presents the conceptual and technical developments of the subject without unduly compromising on either the historical or logical perspective. It also covers the tremendous range of scientifically deep and technologically revolutionary applications of thermodynamics. The text explains how thermodynamics evolved from a few basic laws that were amazingly successful and with tremendous range, without even knowing about the atomic structure of matter or the laws governing the behavior of atoms.

The Presentation Adopted In The Preparation Endeavors To Convey To The Student In A Simple Manner, A Physical Understanding Of The Processes By Which Heat Is Transmitted And Provide Him Or Her With The Tools Necessary To Get Quantitative Solutions To Engineering Problems Involving One Or More Of The Basic Modes Of Heat Flow. Sufficient Material Has Been Included In The Text To Cater To The Requirements Of The Undergraduate Curriculum. Illustrations Pertaining To The Different Modes Of Heat Transfer And The Design Calculations Of Heat Exchangers Have Been Liberally Included In The Text.The Purpose Of This Book Is To Present A Basic Introduction To The Field Of Engineering Heat Transfer. The Book Begins With A Brief Presentation Of The Importance Of Heat Transfer In Chemical And Processing Industry And The Modes Of Heat Transfer. Chapter 2, Dealing With Conduction, Includes A Few Aspects Of Conduction Phenomenon, Analogy Between Heat Flow And Electricity Flow, Critical Thickness And Conduction With Internal Generation Of Heat. In Chapter 3, The Concept Of Film Coefficients Is Presented And The Relationship Between The Individual And Overall Heat Transfer Coefficients Are Dealt With. The Phenomenon Of Unsteady State Heat Transfer And The Methods Of Solving One Dimensional Transient Heat Conduction Problems Have Been Discussed In Chapter 4, Which Is On Unsteady State Heat Conduction. Also The Application Of Molecular Transport Theory To The Unsteady State Heat Conduction Is Included.In Chapter 5, Which Is On Convection, A General Basic Concept, The Application Of Dimensional Analysis In The Case Of Forced And Free Convection, The Heat Transfer From Fins, The Heat Transfer To Fluids In Laminar Flow Inside Tubes, Heat Transfer From Condensed Vapours And Boiling Heat Transfer Are Included. The Various Types Of Heat Exchangers, The Concept Of Capacity Ratios, The Effectiveness Of Heat Exchanger, The Log Mean Temperature Difference, The Number Of Transfer Units (Ntu) And Calculations Pertaining To Heat Exchanger Design And The Effectiveness-Ntu Relationship Have Been Discussed In Chapter 6, Which Bears The Title 'Industrial Heat Exchange Equipment'.In Chapter 7, Which Is On Thermal Energy Transfer By Radiation, The Basic Concepts And Theory Of Radiation Are Presented. In Chapter 8, Which Deals With Evaporation, The Basic Concepts And Definitions, Boiling Point Elevation, Types Of Evaporators, Single And Multiple Effect Evaporation, The Occurrence Of Heat Transfer In Evaporators And The Analysis Of Performance Calculations Of Multiple Effect Evaporators Are Discussed At Some Length. Chapter 9, The Final Chapter, Presents A Brief Review Of Heat Transfer Principles.

The first objective of statistical mechanics is to explain the fundamental laws of thermodynamics from first principles based on the atomic structure of matter. This problem was attacked successfully first by MAXWELL and CLAUSIUS in studies on the kinetic theory of gases. It will be treated briefly in Sec. II-A, to gain some understanding and experience before dealing with more general problems. The second objective is then to calculate thermodynamics quantities from the microscopic laws governing the atomic motion. Whenever we try to lay the foundation of thermodynamics on an atomistic theory, we are confronted with a very strange situation. The thermodynamical state of a system is defined uniquely by only a few quantities, such as pressure, volume, energy, temperature, flow velocities, etc. In contrast, the atomistic descrip tion needs an enormous number of variables to define a state, e. g. , positions and velocities of all the atoms involved in classical mechanics or Schrodinger's wave function of the corresponding N body-problem in quantum mechanics. Classical mechanics, for instance, can predict the future development only if all the positions and velocities are known, say at time t = O. The number of values needed for this 23 purpose is of the order of 10 . Actually, only a few parameters are at our disposal from thermodynamics. Therefore, from thermodynamics we know almost nothing about the atomistic situation.

Frank Kreith and Mark Bohn's PRINCIPLES OF HEAT TRANSFER is known and respected as a classic in the field! The sixth edition has new homework problems, and the authors have added new Mathcad problems that show readers how to use computational software to solve heat transfer problems. This new edition features own web site that features real heat transfer problems from industry, as well as actual case studies.

Translated by Morton Masius