Browsing by Subject "cupola"

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Access status: Open Access ,
Application of computer support for design of shaft furnaces - cupolas
(AGH University of Science and Technology Press, 2017) Dajczer, Grzegorz; Dańko, Rafał
Designing a machine's constructions and an object's structures is one of the areas of technology design. The complexity of the structure is defined by the technology for which it is used. Following the theory of construction and mechanisms, the full characteristics of a machine or device is defined by its shape and operating parameters. The shape reflects geometry. As a result of using the correct parameters, the construction should functional correctly (which means according to its general principles of operation). The project of any structure is a creative process performed by a team of designers and constructors. The contemporary design is not solely based on the personal preferences of engineers. More and more scientific and computerized design methods are being introduced to this process. They are characterized as computer-aided systems and are based on algorithms, programs, and IT equipment. This article presents the methodological application of computer-aided design on an example of the design of shaft furnaces that are used in foundries as cast iron smelters. These furnaces, called cupolas, have again become objects of interest for research. In the design of the cupola construction, Autodesk Inventor techniques were used.
Access status: Open Access ,
Determining optimum volume of cold and hot blast air in single-row coke cupolas
(2005) Khatemi, Belkheir; Longa, Władysław
In this study a formuła was derived to calculate optimum volume of cupola blast air [m /(m -s). standard operating conditions], cold or hot, for single-row coke cupolas, assuming that the lower boun-dary of the melting zone is adhacent to the upper boundary of the combustion zone (the condition of optimum cupola running formulated by A. Achenbach in 1931). Relevant eąuations and tables have also been developed to make the calculations easier. From computations madę in this study it follows that the optimum blast air volume is increasing with an increase of the blast air temperaturę, assuming for cold blast a value close to 100 m /(m -min) (Buzek postulate), with modulus of the metallic charge lumps changing in a rangę of 15 to 20 mm.
Access status: Open Access ,
The theoretical background for calculation of geometrical parameters of the stable melting zone in single-row coke cupolas
(2005) Longa, Władysław; Khatemi, Belkheir
In the present work, the stable melting zone was divided into sequences (systems) of the melting pieces of metal, to derive next some equations used in calculation of the mean volume and surface area of the pieces in individual sequences (for plates of any arbitrary value of their relative dimensions). The analysis of the obtained relationships has proved that in calculation of the geometrical parameters of the melting zone (zone height, mass of melting metal, surface of development, number of the melting pieces of metal) it is possible to use the term of a mean integral volume and mean integral surface area of the pieces of metal in a zone.