Items related to The analysis of fuel, gas, water, and lubricants
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922 edition. Excerpt: ... to be dissolved in all underground waters. The kind, amount, and properties of these substances indicate directly the behavior of a water when used for boiler purposes. Almost without exception their presence is objectionable for reasons which will be evident from the following discussion. Effects of Impurities.--The difficulties which attend the use of water in the generation of steam are three in number: First, mineral scale is formed upon the shell, flues, and sheets; second, foaming or priming may occur; and, third, the water may have corrosive action and weaken the metal of which the boiler is composed. The constituents of a water, therefore, naturally group themselves under these three heads: 1. Scaling ingredients. 2. Foaming ingredients. 3. Corrosive ingredients. Scaling Ingredients.--Scaling ingredients are always considered as including silica and any combination of iron, aluminum, calcium, and magnesium. Since the formation of scale is the most common and perhaps the most evident difficulty which accompanies the use of a boiler, it has sometimes been made the basis of a classification for waters. At a meeting of the American Association of Railway Chemists at Buffalo, N. Y., May 24, 1887, a schedule of classification was adopted. Waters containing varying quantities of scaling material per TJ. S. gallon were graded as in the table below: Table XVI.--Classification Op Waters By The Association Of Railway Chemists Below 8 grains Very good 8 to 15 grains Good 15 to 20 grains Fair 20 to 30 grains Poor 30 to 40 grains Bad Over 40 grains. Very bad In this table the first line was added by the Chicago, Burlington & Quincy Railway to fit the case of Lake Michigan water, which has approximately 8 grains or less per gallon. This...
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- PublisherRareBooksClub.com
- Publication date2012
- ISBN 10 1151883476
- ISBN 13 9781151883476
- BindingPaperback
- Number of pages70
(No Available Copies)
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