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The book is written primarily for the reader who brings fairly extensive background and interest to the field. Chemists in general will, however, find the c h a p ters on the modern explosives industry and its instrumentation and testing methods, as mil as the discussion of damage potential, interesting. The sections dealing mith the calculations of reaction products and heat effects,etc., also offer same ercellent examples of modern thermoehemistry of gases reacting a t high temperatures. The illustrations, by drawing and photographs, and the technical details such as indexing and printing are good-and the hook is generally well written.
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Chemicol Process Economics
John Happel, Professor of Chemical Engineering a t New York University. John Wiley & Sons, Inc., New York, 291 pp. 20 figs. 15.5 X 1958. xii 23.5 cm. $8.50.
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Dr. Happel's bxkgroond of experience with Socony-Mobil Oil Company is reflected in the prrtcticd approach to process economics which he e v e s in this book. The many problems dealing with phases
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Journal of Chemical Education
fractionating towers, shell and tube equipin the chemical literature show that this ment. Dine still heaters, machinery, oumus. field of ormess economies is one in which he com$ssors, and piping. The -append& has contributed in many ways and that on cost data gives tables of costs bmed the book is not a. literature survey of on a. Marshall and Stevens Index of 223.1 other people's views. for 1957. The level of the book is relatively high Chemical Process Economics is a. text for students who have had no previous a t a. higher level than most of them in the experience with economies, business pracchemical field. The many illustrated tioe, or accounting terminologv. The problems and problems at the end of each eight chapters are: I'rineiples of Economic chapter will make this book a. worthwhile Balance; Expanded Economic Balance text. Equations; Special Mathematical Techniques; Notes on Cofit Estimation; KENNETH A. KOBE Risk, Return Rate, and Investment The Uniuersity of Tczaa Recovery; Over-all Considerations in Austin Project Andy&; Process Plant. Components; Social Values in Engineering Economy. The chapter on special mmatheMoney and the Chemical Engineer matical techniques discusnes the d e t w mination of the optimum b,y the methods James 0. Oshunz and Karl Kammer,of c&lcul~s, ~ the method of steepest ascent, meyer, Professors of Chemical Engilinear~ programming, ~ and ~ statistics ~ and i neering, ~ State~ University of Iowa. risk. An unusual chapter in a. technical Prentice-Hall, Inc., Englewood Cliffs, book like this is the one on social values in New Jersey, 1958. ix 201 pp. engineering eneonomy which contrasts the 15 X 22 cm. $6. system of free economy with that of The scientist may not be interested in government control, and discusses the the economic aspects of his research, but effect of government ownership and milithe engineer has to take economics into tary expenditures on private bnsinrss. omsideration in order to be a good engiA lengthy appendix gives: summation neer. Thus the chemical engineer is of time series, practical rules of thumh, concerned with money-optimizing the cost data, summary of formulas and tal~les. investment necessary, the production rate, The summation of time series discusses replaoement of equipment, and the like. finite difference, finite integration, and The writing in this book is informal and the definite sum. Most interesting is the stimulating. It takes the reader right insection on practical rules of thumb used to the problem a t hand, rather than inby engineering companies to give first volving some mythical third person. The estimates for design purposes. These (Continued on page -4318) cover pressure vessela, rpactors, drums,
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