紧凑型热交换器:选择、设计和操作 ( Sorry!快傳又不聽話了)
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Compact Heat Exchangers: Selection, Design and Operation
by J.E. Hesselgreaves English | 2001-05-22 | ISBN: 0080428398 | 416 pages| PDF | 26.6 mb
This book presents the ideas and industrial concepts in compact heatexchanger technology that have been developed in the last 10 years or so.Historically, the development and application of compact heat exchangers andtheir surfaces has taken place in a piecemeal fashion in a number of ratherunrelated areas, principally those of the automotive and prime mover,aerospace, cryogenic and refrigeration sectors. Much detailed technology,familiar in one sector, progressed only slowly over the boundary into anothersector. This compartmentalisation was a feature both of the user industriesthemselves, and also of the supplier, or manufacturing industries. Thesebarriers are now breaking down, with valuable cross-fertilisation taking place.
One of the industrial sectors that is waking up to the challenges of compactheat exchangers is that broadly defined as the process sector. If there is abias in the book, it is towards this sector. Here, in many cases, the technicalchallenges are severe, since high pressures and temperatures are ofteninvolved, and working fluids can be corrosive, reactive or toxic. Theopportunities, however, are correspondingly high, since compacts can offer acombination of lower capital or installed cost, lower temperature differences(and hence running costs), and lower inventory. In some cases they give the opportunityfor a radical re-think of the process design, by the introduction of processintensification (PI) concepts such as combining process elements in one unit.An example of this is reaction and heat exchange, which offers, among otheradvantages, significantly lower by-product production.
To stimulate future research, the author includes coverage of hithertoneglected approaches, such as that of the Second Law (of Thermodynamics),pioneered by Bejan and co- workers. The justification for this is that there isincreasing interest in life-cycle and sustainable approaches to industrialactivity as a whole, often involving exergy (Second Law) analysis. Heatexchangers, being fundamental components of energy and process systems, areboth savers and spenders of exergy, according to interpretation.
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