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Academic literature on the topic 'CHAMBER FURNACE'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 May 2022

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Journal articles on the topic "CHAMBER FURNACE"

1

Pozdieiev, Serhii, Vadym Nizhnyk, Yurii Feshchuk, Valeriia Nekora, Oleksandr Nuianzin, and Taras Shnal. "Investigation of the influence of the configuration of the fire furnace chamber on the temperature regime during the implementation of tests for fire resistance." Eastern-European Journal of Enterprise Technologies 4, no. 1(112) (2021): 34–40. http://dx.doi.org/10.15587/1729-4061.2021.239235.

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The issue related to the conditions for creating the required temperature regime of fire when testing structures for fire resistance has not been studied in detail up to now. That necessitated determining the technical conditions under which it is possible to comply with the standard temperature regime of fire in the fire chamber of the furnace. The influence of the design parameters of the fire furnace chamber on the condition of compliance with the standard fire temperature regime when tested for fire resistance has been established. One of the most effective methods for examining such an impact is computer simulation. A computer model of the fire furnace was built on the basis of a comprehensive analysis and earlier work on the study of such furnaces, taking into consideration technical characteristics, in particular, geometrical parameters, fuel and air supply systems. The obtained research results are a prerequisite for scientific substantiation of the design parameters of fire furnaces and their engineering systems, which is necessary to comply with the standard temperature regime of fire in the furnace fire chamber. This makes it possible to provide the necessary conditions for testing building structures for fire resistance in compliance with the requirements of the relevant standards. The computer model constructed makes it possible to create the necessary temperature regime in the fire chamber of the furnace (in this study, the standard temperature of fire). As a result of the study, the technical parameters of the fuel supply and ventilation system were determined, which ensure compliance with the standard temperature regime in the fire chamber of the furnace. That makes it possible to build an automated complex of the testing process for fire resistance of building structures. In addition, the data obtained can be the basis for the design of such fire furnaces with the ability to comply with different fire temperature regimes without the intervention of the operator.
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2

Mininni, Giuseppe, Vincenzo Lotito, Roberto Passino, and Ludovico Spinosa. "Influence of sludge cake concentration on the operating variables in incineration by different types of furnaces." Water Science and Technology 38, no. 2 (1998): 71–78. http://dx.doi.org/10.2166/wst.1998.0107.

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The influence of cake concentration on fuel consumption, air requirement and flue gas production in incineration of sewage sludge is discussed. Fluidized bed (FBF), multiple hearth (MHF) and rotary kiln (RKF) furnaces are considered as alternatives together with the optional use of an afterburning chamber where exhaust gases are taken at 950°C for 2 s with an oxygen concentration of 6% by volume. It clearly appears that, if an afterburning chamber is used, and total minimum fuel consumption can be achieved at an optimal value of cake concentration (45.9% for FBF and 32.5% for MHF) when autogenous conditions are reached in the furnace and air addition is no longer needed in the afterburning chamber. At higher concentrations, abundant exhaust gas productions, due to the dilution air needed in the furnace, can considerably increase fuel consumption in the afterburning chamber, especially in MHF operation. In the rotary kiln furnace, fuel requirement decreases over the whole range of cake concentration as no conditions for autogenous combustion in the furnace can be achieved.
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3

Rimar, Miroslav, Andrii Kulikov, Marcel Fedak, et al. "Mathematical Model of a Heating Furnace Implemented with Volumetric Fuel Combustion." Processes 8, no. 4 (2020): 469. http://dx.doi.org/10.3390/pr8040469.

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Heating flame furnaces are the main type of furnaces used for heating and heat treatment of metal products in metallurgy and mechanical engineering. In the working chamber of a modern heating furnace, there should be neither high-temperature nor stagnation zones. One of the methods used to provide such combustion conditions is the application of distributed (volumetric) combustion. Owing to this method, heating quality is ensured by creating a uniform temperature field and equivalent heat exchange conditions, regardless of the placement of the charge in the working chamber of the furnace. In this work, we numerically study the volumetric combustion and influences of small- and large-scale recirculation ratios of furnace gases, the influence of temperature fluctuation on the regenerator nozzle, and the working parameters at the starting phase and reverse.
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4

Yan, Qing Song, Huan Yu, Chang Chun Cai, Bo Wen Xiong, and Gang Lu. "Effect of Pressurizing Process on Molten Aluminum Alloy and Furnace Chamber Temperature of Vacuum Counter- Pressure Casting." Key Engineering Materials 474-476 (April 2011): 581–85. http://dx.doi.org/10.4028/www.scientific.net/kem.474-476.581.

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In pressurizing process of vacuum counter-pressure casting, the pressurizing pressure and velocity are very important parameters. Through testing the change of molten aluminum alloy and furnace chamber temperature with the time at difference pressurizing pressure and velocity, the effect of pressurizing process on molten aluminum alloy and furnace chamber temperature of vacuum counter- pressure casting is studied. The results indicate the furnace chamber temperature reduces abruptly at beginning of pressurizing process, subsequently, it elevates to the initial temperature. Moreover, the change of the furnace chamber temperature is finished in the short time. But the change of molten aluminum alloy temperature is not obvious in pressurizing process. At identical pressurizing velocity, the change of the furnace chamber temperature is bigger with increase of pressurizing pressure. Similarly, at identical pressurizing pressure, the change of the furnace chamber temperature is bigger with increase of pressurizing velocity too. Moreover, the effect of pressurizing velocity on the furnace chamber temperature is bigger than pressurizing pressure, and the change of the furnace chamber temperature don’t have effect on the change of molten aluminum alloy temperature.
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5

Dzurňák, Róbert, Augustin Varga, Gustáv Jablonský, et al. "Influence of Air Infiltration on Combustion Process Changes in a Rotary Tilting Furnace." Processes 8, no. 10 (2020): 1292. http://dx.doi.org/10.3390/pr8101292.

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Air infiltration into the combustion chambers of industrial furnaces is an unwanted phenomenon causing loss of thermal efficiency, fuel consumption increase, and the subsequent increase in operating costs. In this study, a novel design for a rotary tilting furnace door with improved construction features is proposed and tested experimentally in a laboratory-scale furnace, aimed at air infiltration rate reduction by decreasing the gap width between the static furnace door and the rotating body. Temperatures in the combustion chamber and oxygen content in the dry flue gas were measured to document changes in the combustion process with the varying gap width. Volumetric flow values of infiltrating air calculated based on measured data agree well with results of numerical simulations performed in ANSYS and with the reference calculation procedure used in relevant literature. An achievable air infiltration reduction of up to 50% translates into fuel savings of around 1.79 to 12% of total natural gas consumption of the laboratory-scale furnace. The average natural gas consumption increase of around 1.6% due to air infiltration into industrial-scale furnaces can thus likewise be halved, representing fuel savings of almost 0.3 m3 per ton of charge.
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6

Cabrić, B., M. Kovacević, and T. Pavlović. "Crystallization in a chamber furnace." Journal of Applied Crystallography 30, no. 4 (1997): 512. http://dx.doi.org/10.1107/s0021889896013544.

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A model of an air cooler (`cold finger') in a laboratory chamber furnace, for simultaneous regulation of different crystallization rates in a series of Tamman test tubes with the purpose of obtaining crystals, is given.
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7

Flores Saldívar, Alfredo Alan, Rodrigo Juárez Martínez, Alfredo Flores Valdés, Jesús Torres Torres, Rocío Maricela Ochoa Palacios, and Yun Li. "Mathematical Modelling for Furnace Design Refining Molten Aluminum." Metals 11, no. 11 (2021): 1798. http://dx.doi.org/10.3390/met11111798.

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The design of an aluminium melting furnace has faced two challenges: mathematical modelling and simulative optimization. This paper first uses fluid dynamics to model the aluminium process mathematically. Then, the model is utilized to simulate a round shaped reverberatory furnace for melting aluminium alloys. In order to achieve the highest thermal efficiency of the furnace, modelling and simulation are performed to predict complex flow patterns, geometries, temperature profiles of the mixture-gas air through the main chamber, as well as the melting tower attached to the furnace. The results led to the establishment of optimal position and angle of the burner, which are validated through physical experiments, ensuring recirculation of the combustion gases through the melting chamber and the melting tower. Furthermore, a proper arrangement of refractory materials is derived to avoid heat losses through the outer surface of the furnace. Temperature profiles are also determined for the optimization to arrive at the final design of the furnace. Compared with manual designs previously practiced, the simulation-based optimal design of furnaces offers excellent guidance, an increase in the aluminium processing and magnesium removal for more refined alloys, and an increased processing rate of aluminium chip accession.
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8

Cabric, B., and A. Janicijevic. "Cooler for obtaining crystals in a crucible furnace." Journal of Applied Crystallography 36, no. 3 (2003): 950. http://dx.doi.org/10.1107/s0021889803006708.

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An air cooler (`cold key') is presented with a movable branchy Tamman test tube (`test comb') installed in a laboratory crucible furnace for regulation and simultaneous crystallization tests at different temperature gradients and crystallization rate intervals, with the purpose of obtaining crystals. This method can also be applied in tube or chamber furnaces.
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9

Kita, Jaroslaw, Annica Brandenburg, Irina Sudina, and Ralf Moos. "3D-Shaping of Ceramic Tapes to Manufacture a High-Temperature Miniaturized Furnace." Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2015, CICMT (2015): 000282–86. http://dx.doi.org/10.4071/cicmt-tha15.

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This contribution shows results of 3D-shaping experiments of ceramic tapes. The structures were made by wrapping structured tapes around a hexagonal alumina rod. After lamination, the rod was removed and the structure was finally fired, similarly as reported in [1]. One out of many possible applications of such structures is a miniaturized furnace for sintering of critical materials, which could contaminate expensive chamber furnaces, for tempering of single gas sensors, or for fast heating at controlled rate. While LTCC technology can be applied only up to 600–700 °C, application of HTCC tapes can extend temperature range to above 1000 °C. Therefore, 99.99% alumina tape (ESL 44007) was used. The here-shown miniaturized furnace has a hexagonal form. For a proper temperature distribution in the furnace chamber, the furnace was equipped with six platinum heaters that can be controlled independently. Finite Elements Analysis (FEM) supported the design process. The paper discusses manufacturing route, beginning with a design process supported by FEM through 3D-shaping by wrapping structured tapes around an alumina rod and finally firing and functionality tests.
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10

Fantner, E. B., B. Koppelhuber-Bitschnau, F. A. Mautner, P. Doppler, and J. Gautsch. "A New High-Temperature Furnace Chamber." Materials Science Forum 278-281 (April 1998): 260–63. http://dx.doi.org/10.4028/www.scientific.net/msf.278-281.260.

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