The motion of a ship through water is made possible by a highly complex combination of factors affecting speed, efficiency, and performance. Of these factors, the temperature of the water surrounding the ship may hold the greatest impact on performance parameters.
Through three in-depth papers included in Collected Works of A.I. Rozenblat: Statistical Analysis of Ship Speed in Waves and the Tropics, Anatoly I. Rozenblat explores the direct impact a variety of variable conditions have on the efficiency and performance of a ship. He arrives at his conclusions through detailed statistical analyses of such factors as exhaust temperature, water temperature, in service rime, wave action, and marine fouling on the ship's body.
Rozenblat supports his papers with numerous figures, graphs, and equations, which describe and illuminate the complexities of his analyses. His careful attention to minute detail, technical subject, and knowledgeable discussion combine to make this a valuable and informative reference book for those interested in marine technology, ship mechanics, and science in general.
Russian-born Anatoly I. Rozenblat has worked as a seaman, an operational ship’s mechanic and marine engineer. Using the experience he gained during his twenty years working in marine technology, Rozenblat has and compiled Analysis of Ship Speed and Engine Parameters in the Tropics.
Rozenblat holds a bachelor of science degree in mechanical engineering from Odessa Institute of Maritime Transport Engineering and bachelor of science degree in computer and information systems from Chicago East-West University.
Rozenblat lives in Chicago, Illinois and is the father of two children, Moshe and Inna.
He is the member of the American Society of Mechanical Engineers, the Society of Naval Architects and Marine Engineers.
His biography has been published by the International Biographical Centre, England; the American Biographical Institute; and Marquis Who’s Who in America.
He has published more than fifty articles of technical literature and has about thirty innovations and six books.
Regression Analysis of the Exhaust Temperature for the Two-Stroke-Cycle Diesel Engine
- The heat density of main diesel engine
At present there are many marine ships and boats that widely use the two-stroke-cycle diesel engines as they have the advantages over the four-cycle diesel engines (Osbourne,1944 ).
However, the question of heat density and functional analysis of the exhaust temperature for these engines have not been investigated enough (Whalley,1992) and
(Reader and Hooper, 1983 ).
Some attempts in this question were made by the authors ( Avallone and Baumeister, 1987 ) in view of functional analysis of the exhaust temperature in connection with relative load for the two-stroke-cycle diesel engine. These conclusions indicate that with increasing the relative load (or engine speed), the exhaust temperature accordingly increases ,but this regression analysis has the nonlinear relationship.
However, the author of this paper does not agree with such a conclusion and the character of the above-named distribution seeks to investigate in this paper the general questions which are joined with heat density of the two-stroke-cycle diesel engine and exhaust temperature in connection with some of the parameters of a running ship in the tropics such as the seawater temperature, duration in-service of ship, wind speed an direction of wind, ship’s speed; and other parameters .
The author thinks that such functional analysis can discover more widely and accurately the complex problems of heat density and the exhaust temperature, which is more important for the diesel engine because the latter works in difficult conditions such as the running ship in the tropics.
The ship is the complex energetic arrangement consisting of the main diesel engine and some auxiliary mechanisms. It is known that the general index of heat density of a diesel engine is the exhaust temperature. However, the conditions of a working engine in the tropics are very difficult because the exhaust temperature rises considerably with the increase of duration in-service of a running ship.
These conclusions are confirmed by statistical results which are shown in Figure 1.
Analysis of Figure 1 shows that the exhaust temperature has an irregular character for the period of a running ship in the tropics.
As indicated in Figure 1 ,there is a general pattern in the increase of the exhaust temperature of a diesel engine from the starting point of the operation ship and engine.
