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Scientific American Volume 27; Supplement (Paperback) Loot Price: R162
Discovery Miles 1 620
Scientific American Volume 27; Supplement (Paperback): Books Group
Scientific American Volume 27; Supplement (Paperback): Books Group

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Scientific American Volume 27; Supplement (Paperback)

Books Group

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Loot Price R162 Discovery Miles 1 620

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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. 1889 Excerpt: ... one inch of water. Since these trials showed the practicability of the system for vessels much larger than torpedo boats, it has been fitted to all subsequent war vessels, it being very well suited to their requirement of having a reserve of power available for use at any time, the reserve being by this method carried in a few light fansinstead of in more numerous boilers or boilers of larger size. There are several other advantages resulting from this system of working which are also of importance. The ventilating pipes with large cowl heads, which are necessary with natural draught, but which are generally objectionable and interfere with the deck arrangements, can be mostly dispensed with, and the requisite openings through the deck, which it is always necessary to keep as small as possible, can be reduced to a minimum. The power of the ship, too, is practically independent of the force and direction of the wind, which is of great importance in some climates, and the stokeholds are always cool and well ventilated. I will just mention the results recently obtained, and others expected very shortly, in its application to modern vessels of large size. With the ordinary funnel draught the average of many results of trials just prior to the introduction of the new system was that about 10% I. H. P. were obtained per square foot of grate, and 12 I. H. P. for each ton of boiler room weights, while with the forced draught, in those vessels with compound engines which are comparable with the ones previously mentioned, the results obtained have been about 16 to 17 I. H. P. per square foot of grate, and about 20 I. H. P. per ton of boiler room weights, which represents an increase of power of boilers of 66 per cent. From these trials of the compound engines it was...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: May 2012
Authors: Books Group
Dimensions: 246 x 189 x 43mm (L x W x T)
Format: Paperback - Trade
Pages: 860
ISBN-13: 978-1-156-41992-2
Barcode: 9781156419922
Categories: Books
LSN: 1-156-41992-1

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