scholarly journals Hőkezelési folyamat számítógépes modellezése

2009 ◽  
Vol 4 (1) ◽  
pp. 117-123
Author(s):  
Zoltán Fabulya ◽  
György Hampel
Keyword(s):  
Heat Treatment ◽  
Computer Simulation ◽  
Energy Consumption ◽  
Specific Energy Consumption ◽  
Time Span ◽  
Fuel Gas ◽  
Environment Management ◽  
Treatment Processes ◽  
Long Time ◽  
Canned Meat

The heat treatment of cans, particularly canned meat, is a process with a big energy need, since the cans need sterilization, a heat treatment with a long time span around 120°C with the use of fuel gas in big quantity. The reduction of the use of the natural resources is the challenge in our days which appears in the new system approach of the environment management, the principle of sustainable development. That is to say, let us produce the same amount of products with less energy consumption, or more amounts with less specific energy consumption. The heat treatment is used to avert microbiological danger. The operation regulation has to be defined in a way which produces a microbiologically reliable product, but does not harm its organoleptic peculiarities, substance, taste and flavour because of the oversized treatment. In the interest of safety we have to define the extent and the time span of the heat effect leading to the destruction of the microbiological pathogens with the use of engineering calculations, modelling and computer simulation. We also have to secure the observance of the regulations obtained this way for the sake of the higher quality and the less resource utilization. This observance ability is answered with the help of our developed model for the computer simulation of heat treatment processes.

scholarly journals Adatbázis alkalmazási lehetőségei autoklávos hőkezelésnél

2010 ◽  
Vol 5 (1-2) ◽  
pp. 239-243
Author(s):  
Zoltán Fabulya ◽  
György Hampel
Keyword(s):  
Heat Treatment ◽  
Computer Simulation ◽  
Sustainable Development ◽  
Energy Consumption ◽  
System Approach ◽  
Specific Energy Consumption ◽  
Environment Management ◽  
Treatment Processes ◽  
Canned Meat ◽  
New System

The heat treatment of cans, particularly canned meat, is a process with a big energy need. The reduction of the use of the natural resources is the challenge in our days which appears in the new system approach of the environment management, the principle of sustainable development. That is to say, let us produce the same amount of products with less energy consumption, or more amounts with less specific energy consumption. We have to secure the observance of the regulations obtained this way for the sake of the higher quality and the less resource utilization with the use of engineering calculations, modelling and computer simulation. This observance ability is answered with the help of our developed database and model for the computer simulation of heat treatment processes.

scholarly journals Problems Accompanying Repairs of Chemical Equipment

2020 ◽  
pp. 13-19
Author(s):  
Edmund Tasak ◽  
Aneta Ziewiec
Keyword(s):  
Heat Treatment ◽  
High Temperature ◽  
Welded Joints ◽  
Chemical Equipment ◽  
Treatment Processes ◽  
Welding Technology ◽  
Long Time ◽  
Formation Of Cracks

The paper presents problems experienced during repairs of structures operated at high temperature for a long time. Research-related TOFD method-based ultrasonic tests revealed indications implying the presence of unacceptable imperfections in welded joints. Attempted repairs involving the use of welding methods proved ineffective as the welding and heat treatment processes resulted in the formation of cracks. The tests and analysis of the above-named issue revealed that the reason for repair-related problems lay in relaxation cracks triggered by excessively high stresses in the joints and improper parameters of heat treatment to which the steel of the boiler was subjected. The welding technology developed as a result of the study enabled the performance of the proper repair of related equipment and made it possible to re-start the production.

scholarly journals Unlocking Sustainability Potentials in Heat Treatment Processes

2020 ◽  
Vol 12 (16) ◽  
pp. 6457
Author(s):  
Stefan Scharf ◽  
Niklas Bergedieck ◽  
Eric Riedel ◽  
Hans Richter ◽  
Norbert Stein
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Energy Consumption ◽  
Energy Demand ◽  
Treatment Time ◽  
Experimental Studies ◽  
Operating Modes ◽  
Treatment Processes ◽  
Aluminium Casting Alloy ◽  
Sustainable Usage

Energy consumption, greenhouse gas emissions, environmental impact levels, and the availability of materials as well as their sustainable usage are all topics of high current interest. The energy intensive processes of casting production such as heat treatment are particularly affected by the pursuit of sustainability. It has been estimated that up to 20% of the total energy demand in a non-ferrous foundry is required to provide the heat energy necessary during heat treatment processes. This paper addresses the application-oriented development of a sustainable configuration of the heat treatment process at the example of the aluminium-casting alloy A356 (AlSi7Mg0.3). Based on calculations of the physically necessary operating modes and under investigation of previous parameter recommendations, experimental studies were carried out to investigate the effects of various heat treatment parameters on the ultimate mechanical properties of the alloy. Since the achievable mechanical properties of the finished casting are decisive, the static and dynamic casting properties resulting from the heat treatment with optimized process parameters were compared with those of conventional process control. Significant optimization potential is shown for reducing the treatment time and thus lowering the energy consumption.

scholarly journals Adatgyűjtés, adatelemzés hőkezelési folyamat modellezéséhez

2010 ◽  
Vol 5 (1-2) ◽  
pp. 234-238
Author(s):  
Zoltán Fabulya
Keyword(s):  
Heat Treatment ◽  
Correlation And Regression Analysis ◽  
Treatment Processes ◽  
Gas Utilization ◽  
Multiple Data ◽  
Treatment Equipment ◽  
Gas Consumption ◽  
Canned Meat ◽  
Heat Treatment Equipment

We have been looking for the possibility to build a computer model of costly gas utilization in the course of heat treatment of canned meat. This was necessary for us, as the first part of our long-term research, to be able to accomplish minimized costs by synchro-nizing heat treatment processes running side by side and by production programming to define completion time of the cans. First, because of our multiple data (paper based, text file, image file, Excel file), we have arranged them under a common user interface, while defining the best one from the data with different precision appearing in several sources. Based on the accurate data we did correlation and regression analysis to define the data influencing the gas consumption and to see whether our present data was enough to develop a model. Since the furnace has to ensure the steam supply of the heat treatment equipment and the heating of the buildings too, we defined the gas consumption of the furnace which is dependent on the environmental temperature.

scholarly journals Removal of mineral oil during recovered paper processing

TAPPI Journal ◽  
2016 ◽  
Vol 15 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Christian Ewald ◽  
Antje Kersten ◽  
Samuel Schabel
Keyword(s):  
Heat Treatment ◽  
Specific Energy ◽  
Specific Energy Consumption ◽  
Mineral Oil ◽  
Oil Removal ◽  
Chemical Concentration ◽  
Flotation Process ◽  
Inorganic Particles ◽  
Mineral Oils ◽  
Treatment Processes

A flotation process and two different heat treatment processes prior to pulping were investigated according to their ability to remove mineral oils. For flotation, a correlation between removal of mineral oils and inorganic particles could be found for all process chemicals used in this study. By optimization of chemical concentration and dosing sequence, up to 80% of mineral oils could be removed while keeping the total losses smaller than 15%. The heat treatment processes achieved mineral oil removal rates that were in some cases even higher than those for flotation. For these processes, the most important parameters appeared to be the specific energy applied, the temperature, and the particle size distribution of recovered paper components. However, the specific energy consumption was quite high.

scholarly journals THE IMPORTANCE OF RESEARCH EXPERIMENT WHEN DEVELOPING A CONTACT GRAIN DRYER

2021 ◽  
Vol 212 ◽  
pp. 6-12
Author(s):  
P.S. Ageev ◽  
◽  
S.A. Sutyagin ◽  
V.I. Kurdyumov ◽  
A.A. Pavlushin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Energy Consumption ◽  
Specific Energy ◽  
Specific Energy Consumption ◽  
Heating Surface ◽  
Rotation Frequency ◽  
Moisture Removal ◽  
Main Experiment ◽  
Treatment Research ◽  
Research Experiment

When conducting experimental studies, it is necessary to carry out a number of experiments sufficient for obtaining an adequate process improvement model. The process of grain heat treatment in a contact type grain dryer is influenced by a large number of different factors. The study of the total influence of a large number of factors, combined in arbitrary correlation, often leads to unclear patterns and erroneous conclusions. In this regard, all factors that influence the process of grain heat treatment in the developed installation were ranked into the main ones, which have the greatest influence on process development, carrying the greatest information, and additional ones, which are of secondary importance. Applying the method of a priori information formalization, as well as taking into account the requirements for factors (controllability, homogeneity and lack of correlation between them), we identified those of them that have the greatest impact on the process of grain heat treatment in the developed installation: the temperature of the heating surface and the rotation frequency of the conveying working body. Based on the study of previously performed studies on grain heat treatment, research experiments, and also, based on the design features of the developed installation, the factor variation ranges were identified. When conducting the main experiment, we chose the total specific energy consumption for evaporation process of 1 kg of moisture from seeds q, kJ / kg as a criterion for improvement. This parametre combined the process energy parametres, as well as heat, mass transfer, as it depends on the amount of energy consumed and moisture removal. Methodologically correct research experiment allowed us to narrow the field of experiments and, with the minimum required number of experiments, to obtain adequate and reliable results of the main experiment. Improvement of the heating surface temperature and CWB rotation frequency during drying of camelina seeds made it possible to provide the total specific energy consumption for moisture evaporation of 4.40 ... 4.55 MJ / kg with a one-time moisture removal of 2.6 ... 3.1 %

scholarly journals A grafo-numeric method of determination of the operation power of the rotor of EsRc-1400 bucket wheel excavator using computer simulation in SolidWorks

2019 ◽  
Vol 290 ◽  
pp. 04007
Author(s):  
Florin Dumitru Popescu ◽  
Sorin Mihai Radu ◽  
Andrei Andraş ◽  
Ildiko Kertész Brînaş
Keyword(s):  
Computer Simulation ◽  
Energy Consumption ◽  
Specific Energy ◽  
Horizontal Plane ◽  
Specific Energy Consumption ◽  
Vertical Plane ◽  
Conveyor System ◽  
Method Of Determination ◽  
Loading System

The bucket wheel excavator (BWE) is a complex continuous digging machine, used to excavate material using a layout of buckets installed on a rotor (bucket wheel), and at the same time, using the conveyor system installed on its boom, transferring this material to the main conveyor. The bucket wheel is the operating equipment, and it rotates in the vertical plane and performs (with the boom) a pivoting movement in the horizontal plane and an ascendant – descendent movement in the vertical plane. The paper presents a new grafo-numeric method of determination of the operation power of the BWE rotor, using computer simulation in SolidWorks. The aim of using virtual models for the analysis of the operation of some components of the BWE is to reduce the specific energy consumption during cutting while maintaining the installed operation power of the rotor, to increase the excavation capacity and to improve the cutting – loading system.

scholarly journals Hőkezelési folyamat modellezési adatainak előkészítése, elemzése húskonzerv-gyártás gázfogyasztásának optimálásához

2009 ◽  
Vol 4 (2) ◽  
pp. 85-90
Author(s):  
Zoltán Fabulya
Keyword(s):  
Heat Treatment ◽  
Correlation And Regression Analysis ◽  
Treatment Processes ◽  
Gas Utilization ◽  
Multiple Data ◽  
Treatment Equipment ◽  
Gas Consumption ◽  
Canned Meat ◽  
Heat Treatment Equipment

We have been looking for the possibility to build a computer model of costly gas utilization in the course of heat treatment of canned meat. This was necessary for us, as the first part of our long-term research, to be able to accomplish minimized costs by synchronizing heat treatment processes running side by side and by production programming to define completion time of the cans. First, because of our multiple data (paper based, text file, image file, Excel file), we have arranged them under a common user interface, while defining the best one from the data with different precision appearing in several sources. Based on the accurate data we did correlation and regression analysis to define the data influencing the gas consumption and to see whether our present data was enough to develop a model. Since the furnace has to ensure the steam supply of the heat treatment equipment and the heating of the buildings too, we defined the gas consumption of the furnace which is dependent on the environmental temperature.

Minimizing of Energy Consumption in Heat Treatment Processes

1994 ◽  
Vol 163-165 ◽  
pp. 739-744
Author(s):  
A. Sala ◽  
P. Gruszka ◽  
J. Kabata ◽  
A. Wozniak
Keyword(s):  
Heat Treatment ◽  
Energy Consumption ◽  
Treatment Processes
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