Water-tube Boilers: Based on a Short Course of Lectures Delivered at University College, London |
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Common terms and phrases
Admiralty BABCOCK & WILCOX Babcock and Wilcox baffle Belleville boiler boiler Fig boiler see Fig Boiler.-The boilers for naval central drum circulation coil boiler combustion chamber Committee connected consists cruisers curved cylindrical boilers diameter drum connected engines external down-comers Fahr feed feed-pumps FEED-WATER REGULATOR fitted float foot of grate forced draught French Navy front funnel Grate Surface hand-holes headers horizontal hot gases inclined internal joints junction boxes lantern large-tube lever Marine Boilers marine type Messrs naval purposes Niclausse boiler Normand boilers Normand-Sigaudy Number of boilers passes pipes placed plate Propontis reservoir rows of tubes screwed ships side space square foot steam and water steam drum temperature Temple boiler Thornycroft boiler top drum torpedo torpedo-boat trials tubulous boilers type of boiler type of water-tube United States Navy upper drum upper steam valve vessels water drum water-level water-space water-tube boiler Weight of boiler Wilcox Boiler Yarrow boiler
Popular passages
Page 200 - These requirements are met by the water-tube boiler in a greater degree than by the cylindrical boiler, and are considered by the Committee of such importance as to outweigh the advantages of the latter type in economy of fuel and cost of up-keep.
Page 201 - ... of the resistance offered by the great length of tube between the feed and steam collectors, the friction of the junction boxes, and the small holes in the nipples between the...
Page 199 - Committee are of opinion that the advantages of water-tube boilers for naval purposes are so great, chiefly from the military point of view, that, provided a satisfactory type of water-tube boiler be adopted, it would be more suitable for use in His Majesty's Navy than the cylindrical type of boiler.
Page 202 - Committee shows that a large proportion of the coal expended in the .Navy is used for distilling and other auxiliary purposes, in harbour as well as at sea. For such purposes, the cylindrical boiler is, in the opinion of the Committee, more suitable and economical than any type of water-tube boiler. They recognise that there are objections to fitting cylindrical and water-tube boilers in combination, but they believe that those drawbacks would be more than compensated for by resulting advantages,...
Page 202 - Committee therefore consider that there was justification for then regarding it as the most suitable type of water-tube boiler for the Navy. (11.) To obtain satisfactory results in the working of the Belleville boiler, in face of the defects named in paragraph 9, more than ordinary experience and skill are required on the part of the engineroom staff. It appears, however, from the evidence placed before the Committee that the engineer officers in charge of Belleville boilers have not been made acquainted...
Page 196 - Belleville boiler for naval purposes as compared with the cylindrical boiler. (¿».) To investigate the causes of the defects which have occurred in these boilers and in the machinery of ships fitted with them, and to report how far they are preventable either by modifications of details or by difference of treatment, and how far they are inherent in the system. The Committee should also report generally on the suitability of the propelling and auxiliary machinery fitted in recent war vessels and...
Page 202 - It is at the same timo less complex, and free from the special risks of tube deterioration which have proved so serious in many cases, notably in the Europa. They therefore recommend, for ships under construction, that the non-economiser type should be reverted to where practicable, with the tubes raised higher above the firebars, to increase the combustion space, and that where possible the steam collectors should be made larger and more accessible internally.
Page 54 - The difference in density of the water due to difference in temperature when the fires are f1rst lighted. This circulation is very sluggish. "(2) When the water is all at approximately the same temperature, and steam is being generated, but not with sufficient rapidity to cause a break in the continuity of the water, a much more vigorous, but mainly local circulation is set up by the entraining action of the bubbles of steam rising through the water. " (3) When steam is generated with such rapidity,...
Page 200 - Durr and of a modified Yarrow type be made and tested at the earliest possible date, under their supervision, with a view of aiding the selection of one or more types of water-tube boilers for use in His Majesty's ships. For this purpose the Committee suggest that two cruisers, not smaller than the " Medea " class, with vertical triple-expansion engines be placed at their disposal, and that they be empowered to order, at once...