Principles of Heat Transfer

Abstract

The purpose of this book is to provide a basic undergraduate level introduction to the subject of heat transfer. The book is the fifth edition of a classic text in the field. The text presents the fundamental principles and the various methodologies used for solving undergraduate heat transfer problems. The text is organized into ten chapters, beginning with an introduction to the basic modes, and progressing through conduction, convection, and radiation. The first chapter presents the basic conduction, convection, and radiation modes of heat transfer, both separately, and combined. This is a positive feature of the text, as students are immediately introduced to the concept of resistance models, which are used to simplify and solve complex combined heat transfer problems. Conduction is presented in two chapters, the first working through standard conduction analysis for steady, multidimensional, and transient problems, and the second covering numerical analysis techniques. A control volume approach has been adopted for this edition, in contrast to the series expansion approach used in previous editions. Convection is covered in four chapters. Starting with boundary layer fundamentals, the text then introduces natural convection, internal convection, and finally external convection. The natural convection chapter has an extended section on finned surfaces, which has a pertinent application to cooling of electronic devices and circuits. A chapter on heat exchangers describes the most common types with representative applications. Liberal use is made of

Validation and results of a scale model of dew deposition in urban environments

“…A common outcome is that, while ratios of temperature are conserved in the model, actual temperatures are distorted compared with those seen at the full scale (Parczewski and Renzi, 1963;Atkinson, 1981;Oke, 1981;Chapman, 1984;Imbabi, 1990;Kreith and Bohn, 1993). For a dew model that operates outdoors and in real time, it is desirable to conserve temperatures (not ratios).…”

Comments on liquid hydrogen absorbers for MICE

“…The absorber body with its cooling channel is nothing but a heat exchanger [3]. The fluid in the cooling channel flows across the cooling surface as a result of forced flow.…”

“…The Nusselts number relates the heat transfer coefficient on the channel surface h c to the thermal conductivity of the fluid k f and the channel hydraulic diameter D H . The general form for the Nusselts number in a flow channel is as follows [3];…”

Thermodynamic and environmental consideration of advanced gas turbine cycles with reheat and recuperator

“…Recuperator effectiveness is defined by equation (11), considering the air to be a minimum fluid (Kreith, F. 1973 (12) As T2 and T6 can be obtained respectively from the compressor and LPT models, it follows that the combustion chamber inlet temperature, Ta, and the heat exchanger exit temperature, Tb, can be found from the above equations.…”

“…In this regard, specific heat was assumed to be a function of both temperature and combustion product composition, and the cooling air fraction was calculated using a relatively simple approach (Kreith, 1973). One of the distinguishing features of this investigation is that cooling air needed by the LPT has been extracted from intermediate stages of the compressor where the pressure is slightly higher than the LPT inlet pressure.…”