Basic Concepts of Analysis

Basic Concepts of Analysis - '14 The Role o f Analysis \15...

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'14 The Role of Analysis \\15 A readable introduction to polymer processing can be found in the first, fourth, and fifth sections of 1.6 F. W. Billmeyer, Jr., Textbook of Polymer Science, Interscience, New York, 1962. and Chapters 5 and 12 of 1.7 F. Rodriguez, Principles of Polymer Systems, McGraw-Hili, New York, 1970. The engineering aspects of waste water treatment are summarized in a paper in the journal Power, . 1.8 R. H. Marks, "Waste-Water Treatment," Power, June 1967. A survey of some of the physiologically oriented activities of chemical engineers, though rather incomplete and thus, to some extent, misleading in emphasis, can be found in three collections: 1.9 D. Hershey, Ed., Chemical Engineering in Medicine and Biology, Plenum, New York, 1966. 1.10 "Chemical Engineering in Medicine," Chemical Engineering Progress Symposium Series No. 66, Vol. 62 (1966). 1.11 "The Artificial Kidney," Chemical Engineering Progress Symposium Series No. 84, Vol. 64 (1968). Most libraries will also have the proceedings of the Annual Conference on Engineering in Medicine and Biology. RtJ~s. .ei I T.I/v', F. / De.Ju1, fV1. M. ''112. z~o~,e~ < In~du. .{.{ (' 0Y'l -t-1l 'C/~'rvl/'uJ d. ..,:,a.,-,. .. 4-. .. AW~'~> (~. CHAPTER 2 Basic Concepts oj' Analysis 2.1 INTRODUCTION The successful solution of chemical engineering problems requires that we have the ability to quantitatively describe, or model, the behavior of the elements of a process. We do this by using the principles of chemistry. , physics, and mathematics to obtain equations. These equations Can then be ,manipulated to predict what will happen under given circumstances. Thus, we will know the elTect on the end product of changing the temperature at which a reactor operates, or the size of a pipe in a heat exchanger. The analysis process is straightforward and systematic. In this chapter we will examine the approach, see how a useful model of a simple process unit can be ob- tained, and get somewhat of a preview of the things to look for in more complex situati~ns . 2.2 THE ANALYSIS PROCESS The specific goals of analysis were outlined at the end of Chapter I: description of a physical situation, prediction of behavior, comparison with true behavior, evaluation of the limitations of the model, and prediction and design. The logical sequence of the process is shown as a block flow diagram in Figure 2.1. Our aim is to become pro(1cient in detail at each step of the process and to understand thoroughly the. intemctions between the various steps. We will begin by briefly discussing each step as shown in the figure. We have seen the variety of physical situations that are of interest to chemical engineers. These include process e{luipmcnt slich as reactors, heat exchangers, and distillation columns, as well as small-scale laboratory equipment for determining basic design data or for investigating physical nrinrtnlp(: W,. mtO'ht nppn !t m~thpm!ttt(,!11 11,:'1o('rrint;"n "f th,. . """. .,,"",. . . . tt.t'll,. ;"r ~
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This note was uploaded on 09/30/2011 for the course ECH 155A taught by Professor Kuhl during the Summer '11 term at UC Davis.

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Basic Concepts of Analysis - '14 The Role o f Analysis \15...

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