Water Tube Boiler Research Articles

Powdered Coal Firing for Water-Tube Boilers and Metallurgical Furnaces

Powdered Coal Firing for Water-Tube Boilers and Metallurgical Furnaces

Testing Emergency Fleet Boilers Using Oil Fuel

Abstract Tests upon the standard four-pass water-tube marine boiler designed by the United States Shipping Board Emergency Fleet Corporation, using coal as fuel, were reported by the present author and Mr. H. Kreisinger in a paper read at the Annual Meeting of the Society in 1919. In consequence of the introduction of oil for fuel on many of the steamships of the United States Shipping Board, it became desirable to ascertain the relative merits on several of the available mechanical atomizing oil burners for boilers. Tests were accordingly run, the boiler used having a heating surface of 2518 sq. ft., a furnace volume of 408 cu. ft., and a commercial horsepower of 435 on the basis of the marine rating of 6 lb. of water to a square foot of heating surface per hour. These tests and the results obtained form the subject of the present paper.

Boiler Tests With Pulverized Coal

Abstract In this paper the author presents a summary of the results obtained in an extended series of tests of a 468-hp. water-tube boiler fired with pulverized Illinois coal. The results show that, contrary to the customary specification, it is not necessary to pulverize the coal to the extreme fineness of 85 per cent through a 200-mesh screen in order to get good combustion and good efficiency. This ability to burn coarser coal means increased capacity of the pulverizing mills and decreased cost of coal preparation. The results also show that it is not necessary to dry coal to about 1 per cent moisture in order to burn it successfully in pulverized form, and it is stated that with most eastern coals drying is not at all necessary. Good results can be obtained when the coal is burned at rates varying from ½ lb. to 2 lb. per cu. ft. of combustion space per hour, and the best results at a rate of 1 to 1½ lb.

バブコツク、エンド、ウキルコツクス汽罐とタクマ式汽罐の實地使用に就て

バブコツク、エンド、ウキルコツクス汽罐とタクマ式汽罐の實地使用に就て

「バブコツク、アンド、ウキルコツクス」及「タクマ」式水管汽罐の試驗成績

「バブコツク、アンド、ウキルコツクス」及「タクマ」式水管汽罐の試驗成績

TESTING WATERTUBE BOILERS

Journal of the American Society for Naval EngineersVolume 31, Issue 3 p. 697-699 TESTING WATERTUBE BOILERS First published: August 1919 https://doi.org/10.1111/j.1559-3584.1919.tb00829.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume31, Issue3August 1919Pages 697-699 RelatedInformation

Emergency Fleet Corporation Water-Tube Boiler for Wood Ships

Abstract The following paper describes and reports tests upon the standard water-tube marine boiler designed by the United States Shipping Board Emergency Fleet Corporation. Thirteen hundred and fifty-two boilers were ordered, of which the first 706 were alike, after which 646 were ordered with slight changes including the use of four passes instead of three as employed in the original lot. In view of the large number of boilers needed, the scarcity of steel and the desire to secure competitive prices, the water-tube type was adopted instead of the Scotch marine type. This made it possible to have the boilers constructed in inland shops throughout the country and effected a reduction in the weight of steel of more than nine million pounds for the total order. The boilers had a grate area of 65.54 sq. ft., heating surface of 2500 sq. ft. and a commercial horsepower of 435 on the basis of the marine rating of 6 lb. of water to a square foot of heating surface per hour. Under test the three-pass type showed at first an efficiency of 60 per cent, which was later raised to about 73 per cent based upon combustible by certain changes which were effected. The four-pass type exceeded 74 per cent on two tests. These results were obtained when the boilers were hand-fired. The Fuel Section of the Bureau of Mines made investigations of the process of combustion and of the temperature of gases as they flowed through the furnace and boiler. These investigations determined in a rational way what changes in the furnace and in the arrangement of the baffles were desirable to raise the efficiency of the boiler. Details of some of these investigations are given together with tables showing the complete results of the evaporative tests.

Steam motor vehicles

This chapter discusses the factors that lead to the fouling and corrosion of various components of boilers and also the methods that lead to the smooth and risk-free operation of boilers. Boilers are classified according to their use, pressure, materials of construction, tube content, firing mode, and heat source. Generally the two types of boilers that are designed are fire-tube boilers and water-tube boilers. The circulation in steam water circuits is either (a) natural or (b) forced circulation. In the case of forced circulation boilers, a pump facilitates water circulation. This system is important when boilers operate over a wide range of capacity. The term “water conditioning” refers to the treatment of water by chemicals, change of pH, and mechanical measures to prevent corrosion in boilers. The three types of water that are encountered after water treatment are raw water supply, condensate returned from steam turbines, and boiler water.

Radiation Error in Measuring Temperature of Gases

Abstract In measuring the temperature of a stream of hot gases surrounded by colder or hotter surfaces, heat radiates to or from the measuring instrument, making it read high or low, and the difference between the true temperature of the gases and that indicated by the instrument is called the radiation error. The paper enumerates the factors with which this error varies, and to show the magnitude of the effects of some of them, gives results of a series of measurements made with thermocouples placed at different points along the paths of gases flowing through water-tube boilers, citing one instance where the error under certain conditions can be as much as 320 deg. cent.

Discussion: “Circulation in Horizontal Water Tube Boilers” (Bancel, Paul A., 1915, Trans. ASME, 37, pp. 1011–1035)

Discussion: “Circulation in Horizontal Water Tube Boilers” (Bancel, Paul A., 1915, Trans. ASME, 37, pp. 1011–1035)

Circulation in Horizontal Water Tube Boilers

Circulation in Horizontal Water Tube Boilers

A Water-tube Boiler for Merchant Ships

A Water-tube Boiler for Merchant Ships

THE SOLIGNAC‐GRILLE BOILER.

Journal of the American Society for Naval EngineersVolume 24, Issue 3 p. 1061-1064 THE SOLIGNAC-GRILLE BOILER. A WATER-TUBE BOILER IN WHICH THE STEAM IN FORMATION DOES NOT PASS THROUGH THE WATER—THE ENTIRE BOILER MAY BE TURNED ON A PIVOT OUT OF THE SETTING First published: August 1912 https://doi.org/10.1111/j.1559-3584.1912.tb04649.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume24, Issue3August 1912Pages 1061-1064 RelatedInformation

Results of experiments with a water-tube boiler with special reference to superheating : Harold E. Yarrow. (The Fifty-third Session of the Institution of Naval Architects, March 28, 1912.)

Results of experiments with a water-tube boiler with special reference to superheating : Harold E. Yarrow. (The Fifty-third Session of the Institution of Naval Architects, March 28, 1912.)

SUPERHEATERS IN MARINE BOILERS

Journal of the American Society for Naval EngineersVolume 24, Issue 2 p. 644-653 SUPERHEATERS IN MARINE BOILERS RESULTS OF EXPERIMENTS WITH A WATER-TUBE BOILER WITH SPECIAL REFERENCE TO SUPERHEATING* Harold E. Yarrow, Harold E. Yarrow Associate MemberSearch for more papers by this author Harold E. Yarrow, Harold E. Yarrow Associate MemberSearch for more papers by this author First published: May 1912 https://doi.org/10.1111/j.1559-3584.1912.tb03561.x Paper read before the Institution of Naval Architects, March 28, 1912. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume24, Issue2May 1912Pages 644-653 RelatedInformation

SUPERHEATERS IN MARINE BOILERS.

Journal of the American Society for Naval EngineersVolume 24, Issue 1 p. 644-653 SUPERHEATERS IN MARINE BOILERS. RESULTS OF EXPERIMENTS WITH A WATER-TUBE BOILER WITH SPECIAL REFERENCE TO SUPERHEATING* Harold E. Yarrow, Harold E. Yarrow Associate MemberSearch for more papers by this author Harold E. Yarrow, Harold E. Yarrow Associate MemberSearch for more papers by this author First published: February 1912 https://doi.org/10.1111/j.1559-3584.1912.tb04623.x * Paper read before the Institution of Naval Architects, March 28, 1912. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume24, Issue1February 1912Pages 644-653 RelatedInformation

THE WIDER ADOPTION AND STANDARDIZATION OF WATERTUBE BOILERS*

Journal of the American Society for Naval EngineersVolume 24, Issue 1 p. 692-717 THE WIDER ADOPTION AND STANDARDIZATION OF WATERTUBE BOILERS* E. M. Speakman, E. M. SpeakmanSearch for more papers by this author E. M. Speakman, E. M. SpeakmanSearch for more papers by this author First published: February 1912 https://doi.org/10.1111/j.1559-3584.1912.tb04625.x * Paper read before the Institution of Engineers and Shipbuilders in Scotland on February 20. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Volume24, Issue1February 1912Pages 692-717 RelatedInformation

BARCOCK AND WILCOX LD.V. WATER TUBE BOILER AND ENGINEERING COMPANY. SAMEV. EDWIN DANKS & CO. (OLDBURY) LD.

BARCOCK AND WILCOX LD.<i>V</i>. WATER TUBE BOILER AND ENGINEERING COMPANY. SAME<i>V</i>. EDWIN DANKS &amp; CO. (OLDBURY) LD.

汽罐

A water-tube boiler (1) of the "D" type is disclosed which includes a water-cooled rear wall comprising a plurality of vertically disposed riser tubes (14a, b) located at the rear end of the furnace chamber (5). Novel sealing means are disclosed for sealing the aforesaid rear wall to its adjacent vertically extending walls of the furnace chamber (5) and convection section (7). A further aspect of the invention lies in the particular feeder conduit means (9, 10, 11, 12, 13) provided for supplying water to the riser tubes of the water-cooled rear wall and also in the particular return conduit means (15a, b; 16a, b) provided for connecting the riser tubes (14a, b) to the steam drum (3). In yet another aspect of the invention, novel construction is provided associated with the convection section for discharging flue gases from the boiler.

Marine Engineering (a Text-Book)

MARINE engineering has been developed in many directions during recent years, and the influence of these developments upon the design of steamships has been marked. Within a period of fifteen or sixteen years water-tube boilers have practically taken the place of cylindrical (or “tank”) boilers in all classes of warships; steam-turbines have been introduced for ship-propulsion, and have already superseded reciprocating engines in the Royal Navy, while growing in favour in other war-fleets and in mercantile steamships; oil-fuel has been adopted as a supplement to or substitute for coal; and now internal-combustion engines are being introduced and greatly increased in size and power. It is a natural consequence of these changes that numerous additions should be made to the literature of the subject, and that new editions of standard text-books should appear. Marine Engineering (a Text-Book). By Engineer-Commander A. E. Tompkins Third edition, entirely re-written, revised, and enlarged. Pp. viii+812. (London: Macmillan and Co., Ltd., 1908.) Price 15s. net.