Publication:
A comparison of forced and natural circulation steam generators.

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Authors
Marshall, Walter Leslie.
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Advisors
Drucker, E.E.
Date of Issue
1952
Date
Publisher
Monterey, California: U.S. Naval Postgraduate School
Language
en_US
Abstract
For a number of years, especially since the end of World War II, the engineering literature has contained an increasing number of references to forced circulation boilers. Most of these articles extol the virtues of some one kind of boiler or tend to justify the conventional natural circulation principles. The range of boiler types covered by the term "forced circulation" is much broader than usually realized, and since some of these types are basically quite different the existing confusion on this subject is understandable. We comaonly think of the United States as a leader in technological progress and development, and in many fields that is true. There are other fields, however, where from time to time we t^nd to lag. This has been especially so with regards to the application of forced circulation in boilers even though some of the working principles were originally discovered in this country. It is gratifying to note the rapid and accelerating interest which is now being shown towards making up the lost time. In this paper an attempt is made to classify and describe the common types of forced circulation boilers. By comparison with natural circulation principles, advantages and disadvantages are brought out. The ccmparison is not intended to minimize the importance of natural circ\ilation, but rather to show that forced circulation represents a step forward in steam generation similar to that of the watertube over the firetube boiler.
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Mechanical Engineering
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