Searching for just a few words should be enough to get started. If you need to make more complex queries, use the tips below to guide you.
Article type: Research Article
Authors: Halley, G.B.
Note: [1] Paper read before the North-East Coast Institution of Engineers and Shipbuilders, Newcastle upon Tyne, on the 2nd November, 1959.
Abstract: The lecture is concerned with machinery for large tankers both at sea and under consideration for the future. The range is up to 130,000 tons d.w. and the speeds up to 18 knots. The choice of machinery is considered, but virtually no reference is made to nuclear propulsion. Comparisons are made between the steam turbine, the heavy-oil engine, the gas turbine and the free-piston engine, and some advantages and disadvantages are brought out. Regarding the steam turbine, the choice of pressures and temperatures are considered. Moisture content of the steam in the last stages of the l.-p. turbine is shown with special reference to the erosion which takes place on the edges of the last few rows of blades. The higher K values, now being permitted by Lloyd’s to be used for gearing, are mentioned, and also the use of excess pressure oil. The fitting of five-bladed as against four-bladed propellers for such aft end installations is discussed and findings given from the results of two ships with similar machinery. With reference to heavy-oil engines the amount of steam made available by the exhaust gases is considered, and it is pointed out that, with engines running on reduced ratings, this amount is often considerably less than that expected by shipowners. Cargo handling facilities for forms of propulsion other than turbines points to the possible use of small low-pressure water-tube boilers in conjunction with a steam/steam generator for oil heating. A curve is shown giving comparative machinery installation costs of steam and heavy-oil engines for the tankers considered. This is made up from a number of ships now at sea but is extrapolated for larger installations. A further curve is given showing relative weights of turbine machinery. A summary gives the present findings with respect to machinery for large tankers, but points out how the situation might rapidly change.
DOI: 10.3233/ISP-1959-66402
Journal: International Shipbuilding Progress, vol. 6, no. 64, pp. 519-537, 1959
IOS Press, Inc.
6751 Tepper Drive
Clifton, VA 20124
USA
Tel: +1 703 830 6300
Fax: +1 703 830 2300
sales@iospress.com
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
IOS Press
Nieuwe Hemweg 6B
1013 BG Amsterdam
The Netherlands
Tel: +31 20 688 3355
Fax: +31 20 687 0091
info@iospress.nl
For editorial issues, permissions, book requests, submissions and proceedings, contact the Amsterdam office info@iospress.nl
Inspirees International (China Office)
Ciyunsi Beili 207(CapitaLand), Bld 1, 7-901
100025, Beijing
China
Free service line: 400 661 8717
Fax: +86 10 8446 7947
china@iospress.cn
For editorial issues, like the status of your submitted paper or proposals, write to editorial@iospress.nl
如果您在出版方面需要帮助或有任何建, 件至: editorial@iospress.nl