Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
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Chapter 1, Problem 1.28P
Interpretation Introduction

(a)

Interpretation:

For 0 < ß < 1, the cost per unit size decreases with increasing size should be shown.

Concept Introduction:

Chemical-plant equipment costs rarely vary in proportion to size. In the simplest case, cost C varies with size S according to the allometric equation

  C = αSβ

The size exponent ß is typically between 0 and 1. For a wide variety of equipment types it

is approximately 0.6.

Interpretation Introduction

(b)

Considering the case of a spherical storage tank. The size is commonly measured by internal volume Vti. ß = 2/3 should be shown. On what parameters or properties would you expect quantity a to depend should be determined.

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